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EP3112542B1 - Dispositif et procede de couplage thermique de parties betonnees de batiment - Google Patents

Dispositif et procede de couplage thermique de parties betonnees de batiment Download PDF

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Publication number
EP3112542B1
EP3112542B1 EP16164249.1A EP16164249A EP3112542B1 EP 3112542 B1 EP3112542 B1 EP 3112542B1 EP 16164249 A EP16164249 A EP 16164249A EP 3112542 B1 EP3112542 B1 EP 3112542B1
Authority
EP
European Patent Office
Prior art keywords
thermal insulation
insulation element
concrete
region
building part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16164249.1A
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German (de)
English (en)
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EP3112542A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schoeck Bauteile GmbH
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Schoeck Bauteile GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schoeck Bauteile GmbH filed Critical Schoeck Bauteile GmbH
Priority to SI201630754T priority Critical patent/SI3112542T1/sl
Priority to PL16164249T priority patent/PL3112542T3/pl
Priority to EP20164907.6A priority patent/EP3690159B1/fr
Publication of EP3112542A1 publication Critical patent/EP3112542A1/fr
Application granted granted Critical
Publication of EP3112542B1 publication Critical patent/EP3112542B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
    • E04B1/165—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material with elongated load-supporting parts, cast in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B2001/7679—Means preventing cold bridging at the junction of an exterior wall with an interior wall or a floor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2103/00—Material constitution of slabs, sheets or the like
    • E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods

Definitions

  • the present invention relates to a load-bearing, vertical building part made of concrete, in particular a support, with a first bearing surface for load-bearing connection to a horizontal building part to be made above or below it of concrete, in particular a floor or a floor slab, and a method for producing such Part of the building.
  • the invention relates to a thermal insulation element for heat decoupling between load-bearing parts of the building to be made of concrete, preferably between a vertical part of the building, in particular a support, and a horizontal part of the building above or below it, in particular a floor or a floor slab.
  • load-bearing parts of buildings are often created from reinforced concrete structures.
  • such parts of the building are usually provided with external thermal insulation.
  • the floor ceiling between the basement, such as a basement or underground car park, and the ground floor is often equipped with thermal insulation on the basement side.
  • the difficulty arises here that the load-bearing parts of the building on which the building rests, such as columns and outer walls, have to be connected in a load-bearing manner to the parts of the building above it, in particular the floor ceiling.
  • This is usually achieved by monolithically connecting the floor slab to the load-bearing columns and external walls with continuous reinforcement.
  • this creates thermal bridges that can only be removed with difficulty from external thermal insulation.
  • the upper section of the load-bearing concrete columns facing the floor ceiling is also covered with thermal insulation. This is not only complex and visually unappealing, but also leads to unsatisfactory building physics results and also reduces the parking space available in the underground car park.
  • the thermal insulation element has a pressure-resistant supporting structure with insulating elements arranged in the spaces.
  • the supporting structure can consist of a lightweight concrete, for example.
  • Such a thermal insulation element is used for thermal insulation of brick outer walls, for example, as a conventional brick, it is used as the first stone layer of the load-bearing outer wall above the basement ceiling.
  • a pressure-transmitting and insulating connecting element which is used for the vertical, load-bearing connection of building parts to be made of concrete. It consists of an insulation body with one or more pressure elements embedded in it. Shear force reinforcement elements run through the pressure elements and, for connection to the parts of the building to be made of concrete, extend essentially vertically beyond the top and the bottom of the insulation body.
  • the insulation body can be made of foam glass or expanded polystyrene hard foam, for example, and the pressure elements can be made of concrete, fiber concrete or fiber plastic.
  • Another object of the invention is to provide a thermal insulation element for heat decoupling between load-bearing parts of the building to be made of concrete, preferably between a vertical part of the building, in particular a column, and a horizontal part of the building, in particular a floor slab, above or below, in which the Risk of local overload at the support points is reduced.
  • the rod-shaped reinforcement means in particular reinforcement bars, extend essentially vertically beyond the first support surface in that an area of the vertical part of the building adjacent to the first support surface serves as a thermal insulation element for heat decoupling between the vertical part of the building and the horizontal to be created above or below it
  • Part of the building is designed so that the area forming the thermal insulation element consists at least partially of a pressure-transmitting and heat-insulating material, namely lightweight concrete, and that the reinforcing bars extending beyond the upper contact surface consist of a fiber composite material and through the first area of the vertical area forming the thermal insulation element Part of the building extends substantially vertically into an adjoining second area of the vertical part of the
  • the thermal insulation element thus consists, at least in part, of a pressure-transmitting and heat-insulating lightweight concrete.
  • High-pressure-resistant molded elements with low specific thermal conductivity can be made from lightweight concrete.
  • a lightweight concrete part can additionally include hollow chambers or enclosed insulating bodies.
  • the height of the thermal insulation element preferably corresponds approximately to the thickness of a typical thermal insulation layer, that is to say approximately 5 to 20 cm, preferably 10 to 15 cm.
  • a concrete with a dry bulk density of maximum 2000 kg / m 3 is defined under lightweight concrete according to the applicable regulations.
  • the low density in comparison to normal concrete is achieved by appropriate manufacturing processes and different lightweight concrete grains, preferably grains with grain porosity such as expanded clay.
  • lightweight concrete has a thermal conductivity between 0.2 and 1.6 W / (m ⁇ K).
  • the improved and more secure connection of the building parts made of concrete is achieved above all by the fact that, with the same strength class, the elastic modulus of light concrete is only about 30 to 70% of the values of normal concrete. Therefore, the elastic deformations with the same stress (tension) are on average 1.5 to 3 times as large. For this reason, the thermal insulation element made of lightweight concrete also acts as a stress-damping element and is able to compensate for smaller settlements and elastic deformations of the part of the building above and to ensure a more even distribution and force transmission from eccentric contact forces to or into the part of the building below.
  • the much lower modulus of elasticity of the lightweight concrete used has a particularly favorable effect on load centers and bearing twists, which result in increased edge pressures. Due to its elastic properties, the thermal insulation element acts as a "centering element", so to speak. In contrast to this, the compression with a central load is of minor importance.
  • the typical modulus of elasticity of normal concrete, as used for a column, is approximately E cm ⁇ 30,000 to 40,000 N / mm 2 .
  • the modulus of elasticity of the lightweight concrete in the context of the invention is between approximately 9,000 and 22,000 N / mm 2 , preferably between 12,000 and 16,000 N / mm 2 , most preferably approximately 14,000 N / mm 2 .
  • the combination of lightweight concrete with reinforcement made of a fiber composite material according to the invention reduces the heat transfer in the area of the thermal insulation element by approx. 90% .
  • the above-mentioned upper area of the vertical part of the building thus acts not only as a thermal insulation element in terms of building physics and as a load-bearing component in structural terms, but also as a stress-damping element to compensate for mechanical deformations. It does not matter whether the thermal insulation element is sent to the construction site as a lightweight precast element delivered, installed there in the formwork for the vertical part of the building and the latter is concreted from below against the lower contact surface of the thermal insulation element, or whether the thermal insulation element in the formwork of the vertical part of the building is made on site from special, lightweight in-situ concrete.
  • the thermal insulation element is designed as a prefabricated molded part.
  • the invention therefore also relates to a thermal insulation element for heat decoupling between load-bearing parts of the building to be made of concrete, preferably between a vertical part of the building, in particular a pillar, and a horizontal part of the building above or below it, in particular a floor slab.
  • the thermal insulation element has a base body with an upper and a lower contact surface for vertical connection to the parts of the building.
  • the base body of the thermal insulation element consists at least partially of a compressive force-transmitting and heat-insulating material, namely lightweight concrete, and has one or more rod-shaped reinforcement means, in particular reinforcement bars, which penetrate the base body and extend substantially vertically beyond the upper and the lower contact surface, in particular reinforcement bars on.
  • Lightweight concrete can be manufactured and processed better under factory conditions than on the construction site, so that factory-made thermal insulation elements can achieve higher compressive strength classes than those made from in-situ concrete.
  • the reinforcing bars are inserted in sleeves which are embedded in the material transmitting the pressure force.
  • the sleeves serve as lost formwork for the subsequent insertion of the reinforcement bars.
  • Reinforcing bars made of fiber composite material can transmit very high tensile forces, but in contrast, significantly lower pressure forces can lead to the destruction of such reinforcing bars.
  • the use of sleeves prevents form-fitting embedding of the reinforcing bars in the surrounding concrete, which is normally intended for concrete reinforcement and is almost essential.
  • the reinforcement bars can deform elastically in their sleeves until the compressive forces are completely absorbed by the surrounding compressive stable lightweight concrete insulation body, so that a damaging compressive force load on the reinforcing bars is avoided.
  • the reinforcing bars in the thermal insulation element are expediently designed as tensile reinforcement, since the connection between the support and the floor slab above it can be considered statically as an articulated connection.
  • tensile reinforcement since the connection between the support and the floor slab above it can be considered statically as an articulated connection.
  • the thermal insulation element has at least one through opening which extends from the upper to the lower contact surface and is designed to carry out a compacting device for fresh concrete.
  • the through opening thus serves as an immersion point for an internal vibrator.
  • the passage opening is preferably arranged approximately centrally in the thermal insulation element.
  • a passage opening is provided in the thermal insulation element, through which a compaction device such as the vibrating bottle of a concrete vibrator can be passed, in order to compact or recompact the in-situ concrete underneath after the thermal insulation element has been installed.
  • a compaction device such as the vibrating bottle of a concrete vibrator
  • the through opening can also be used as a filling opening for in-situ concrete.
  • a further advantage of the present invention results if the lower contact surface of the thermal insulation element has a surface with a three-dimensional profile. Suitable profiling of the surface further reduces defects in the connection between the thermal insulation element and the freshly concreted part of the building underneath.
  • the surface may have elevations and depressions as well as inclined surfaces, furrows, or the like, so that in the event of sedimentation, the surface water that settles out can run or settle in non-critical areas, while one in areas of the thermal insulation element that are critical for the static connection there is an intimate connection to the fresh concrete of the part of the building below.
  • an embodiment is considered to be particularly preferred in which the lower contact surface has a funnel-shaped or curved surface in the direction of the through opening. This ensures that, in the event of sedimentation, the surface water that settles out is displaced in the direction of the passage opening or only forms in this area, which does not contribute to the statics of the construction anyway.
  • a reinforcement bracket is arranged in the interior of the thermal insulation element that transmits pressure.
  • a reinforcement bracket in the form of a self-contained reinforcement ring with, for example, a circular or rounded polygonal base, which is arranged in a plane which is essentially parallel with respect to the bearing surfaces, can further increase the resistance to pressure of the thermal insulation element by minimizing the transverse expansion of the thermal insulation element under pressure.
  • potting openings can be provided in the thermal insulation element, via which additional potting compound, such as potting mortar, can be filled if necessary after the concrete has hardened, in order to fill any cavities that still exist between the part of the building underneath and the thermal insulation element.
  • additional potting compound such as potting mortar
  • the potting openings in question are preferably closed by means of removable blind plugs, so that they cannot be blocked by in-situ concrete when the thermal insulation element is installed.
  • a sealing plug is provided, with which the through opening can be subsequently closed.
  • the sealing plug consists of a heat-insulating but non-load-bearing material, such as extruded polystyrene.
  • a stopper can be conically shaped so that it can be inserted sealingly into the through opening, which preferably also tapers downward. This ensures that after the installation of the thermal insulation element, no thermal bridge remains through the through opening, for example due to in-situ concrete entering the through opening when concreting the floor above.
  • the through opening has an opening dimension that is large enough to enable vibrating bottles customary on the construction site to be carried out, in particular at least 50 mm, preferably between 60 and 80 mm.
  • the object in the case of a thermal insulation element of the type mentioned at the outset, can also be achieved in that instead of rod-shaped reinforcement means in the base body one or more of these vertically from the upper to the lower contact surface penetrating sleeves are used, which are embedded as lost formwork in the pressure-transmitting material and are designed for subsequent use or for the connection-free implementation of rod-shaped reinforcement means, in particular reinforcement bars, which extend essentially vertically beyond the upper and the lower contact surface.
  • the use of sleeves prevents the reinforcing bars from being positively embedded in the surrounding concrete, so that when a fiber composite reinforcement is used, a harmful compressive force load on the reinforcing bars is avoided.
  • a structure has considerable advantages in the production of thermal insulation elements according to the invention. If such a thermal insulation element is manufactured under factory conditions, it is easier to use sleeves in a formwork for the thermal insulation element than reinforcement bars, which are intended to penetrate the thermal insulation element on both sides and which have to be sealed against the formwork.
  • thermal insulation elements are designed without bulky reinforcing bars and the latter are only inserted into the sleeves of the thermal insulation element at the construction site when the thermal insulation element is installed in a support or wall.
  • Such a thermal insulation element also enables the use of reinforcing bars made of stainless steel, for example, if no reinforcing bars made of fiber composite material are at hand or such are not desired for other reasons.
  • the invention further relates to a method for creating a vertical part of a building made of concrete, in particular a support, with a first bearing surface for load-bearing connection to a horizontal part of the building to be created above or below it from concrete, in particular a floor slab.
  • a first area of the vertical part of the building is created from reinforced normal concrete.
  • a second area of the vertical part of the building, located between the first bearing surface and the first area of the vertical part of the building, is at least partially formed from a pressure-transmitting and heat-insulating material, namely lightweight concrete, in order to act as a thermal insulation element for heat decoupling between the vertical part of the building and the horizontal to be created above or below it Part of the building serve.
  • rod-shaped reinforcing means in particular reinforcing bars, made of a fiber composite material are installed in the second area of the vertical part of the building, which extends essentially vertically through the second area of the vertical part of the building into the adjoining first area and beyond the first bearing surface.
  • the thermal insulation element can be a prefabricated lightweight precast element.
  • reinforcement and formwork arranged around the reinforcement are created for the first area of the vertical part of the building.
  • Fresh formwork concrete is poured into the formwork over the full height of the first area of the vertical part of the building.
  • the second area of the vertical part of the building is formed by the prefabricated thermal insulation element, which is inserted into the formwork.
  • the first area can either be concreted before the thermal insulation element is inserted, or the thermal insulation element can also be inserted into the formwork before the first area is concreted.
  • the first, lower area is first concreted by pouring in-situ concrete into the formwork and compacting it. Then, in a second step, the thermal insulation element is inserted into the formwork. The reinforcing bars that protrude downwards beyond the thermal insulation element are pressed into the fresh in-situ concrete of the first area. Subsequently, the concrete is preferably re-compacted by means of a compacting device which is passed through a through opening in the thermal insulation element. The passage opening can then preferably be closed by means of a sealing plug. Then the horizontal part of the building above it, for example a floor ceiling, can be created above the thermal insulation element in a conventional manner.
  • the thermal insulation element can also be installed before the formwork is filled with in-situ concrete.
  • a passage opening provided in the thermal insulation element can initially be used as a filling opening for filling the in-situ concrete.
  • the filled concrete is then compacted by inserting the vibrating tool into the fresh in-situ concrete through the through opening.
  • the thermal insulation element can also be created on site from in-situ concrete.
  • reinforcement and formwork arranged around the reinforcement are first created for the first, lower area of the vertical part of the building.
  • the reinforcement bars made of fiber composite material are used in an upper area of the formwork, which corresponds to the second area of the vertical part of the building.
  • Fresh formwork concrete is poured into the formwork up to the height of the first area of the vertical part of the building.
  • the second area of the vertical part of the building is then created by pouring fresh lightweight concrete into the upper area of the formwork.
  • the reinforcement bars in the upper area can be inserted into the lower area of the formwork before the in-situ concrete is poured in and connected to the reinforcement in the lower area.
  • the reinforcing bars can only be pressed into the still fresh in-situ concrete after the in-situ concrete has been filled and compacted into the lower formwork area.
  • the lightweight concrete can also be installed with fully hardened in-situ concrete.
  • a horizontal part of the building that is to say, for example, a floor ceiling
  • an offset is provided adjacent to the vertical part of the building, for example a support.
  • a column can be created up to just below a floor slab above it.
  • the formwork for the floor slab can then be connected to the formwork still left on the support and this can be made of in-situ concrete, leaving a slight free space above the column inside the formwork is also filled with in-situ concrete of the floor slab and forms an offset.
  • a support 1 is provided, which is monolithically connected to a base plate 2 and a floor 3.
  • the upper area 4 of the prop is made of lightweight concrete while the lower area 1 'consists of normal in-situ concrete (normal concrete).
  • the support 1 can have a clear height of 220 cm, for example.
  • the upper area accounts for 10 cm.
  • a thermal insulation layer 5 made of a highly insulating material is applied below the floor ceiling, the thickness of which essentially corresponds to at least the height of the upper region 4 of the support 1.
  • Mineral insulation boards or wood-wool multilayer boards can be installed as the thermal insulation layer 6, for example.
  • the base plate 2 is first concreted with a reinforcement 2 'in a conventional manner.
  • reinforcement bars 2 protrude vertically upward from the horizontal reinforcement 2 'of the floor slab.
  • a reinforcement 6 made of structural steel arranged inside the support 1 is then connected to this.
  • the reinforcement 6 comprises four vertical reinforcement bars 6 'and a plurality of reinforcement brackets 6 ", spaced apart in the vertical direction, with an approximately square plan.
  • the reinforcement bars 7 surround a reinforcement arranged at right angles thereto, for example a reinforcement bracket 7 'made of stainless steel.
  • the reinforcement bars 7 protrude beyond the upper area 4 of the column in order to enable a monolithic connection to the floor ceiling 3 to be created later.
  • the reinforcing bars 7 also protrude from the upper area 4 of the support, which serves as a thermal insulation element, into the lower area 1 'made of normal concrete.
  • In-situ concrete is then poured into this, namely up to the height of the lower region 1 ', that is to say approximately 210 cm high in the exemplary embodiment.
  • the in-situ concrete a typical construction-ready normal concrete, is then compacted with an internal vibrator.
  • fresh lightweight concrete is poured into the existing formwork in the upper area 4 above and also compacted.
  • the process of creating the floor ceiling 3 can also be carried out in a manner known per se, the reinforcement of which 3 'is cast with the reinforcing bars 7, which project beyond the upper contact surface of the support 1 and are made of fiber composite material in the in-situ concrete of the floor slab.
  • a prefabricated molded part can also be installed as a heat insulation element in the formwork of the support.
  • the formwork of the column is either filled with in-situ concrete through an opening in the molded part, or the formwork is only filled with in-situ concrete up to the height of the lower area 1 'and the molded part is then inserted into the formwork from above and to the other pressed fresh in-situ concrete of the column 1.
  • thermal insulation element 10 comprising such a molded part is shown. It is used for the monolithic connection and for the load-bearing connection of a concrete support 1, for example in the basement of a building, to the basement ceiling 3 above.
  • the thermal insulation element 10 has a cuboid base element 11 with an upper side 12 and an underside 13, each of which serves as a support surface for the basement ceiling or the end of the support 1 supporting it.
  • a central through opening 14 which extends from the upper side 12 to the lower side 13 of the thermal insulation element 11.
  • Four reinforcing bars 15 made of a fiber composite material protrude through the base body 11.
  • the underside 13 of the base body 11 has a three-dimensional profile in the form of a funnel-shaped recess 16 extending in the direction of the through opening 14.
  • a reinforcement bracket 17 is also embedded, which lies around the reinforcement bars 15 and gives the thermal insulation element 10 additional stability.
  • the base body 11 of the thermal insulation element 10 consists of a lightweight concrete, which on the one hand has high pressure stability and on the other hand has good thermal insulation properties. Compared to concrete with a thermal conductivity of about 1.6 W / (m ⁇ K), the thermal conductivity is when using a suitable one Light concrete material in the range of about 0.5 W / (m ⁇ K), which corresponds to an improvement of about 70%.
  • the light concrete used essentially consists of expanded clay, fine sand, preferably light sand, flow agents and stabilizers, which prevent segregation by floating the grain and improve workability.
  • the compressive strength of the thermal insulation element is sufficiently high to allow the statically planned use of the underlying support made of in-situ concrete, for example in accordance with the compressive strength class C25 / 30.
  • the compressive strength of the thermal insulation element preferably corresponds to at least 1.5 times the statically required value. This ensures that there are also safety reserves in the event of any missing surfaces on the connecting surface between the thermal insulation element and the support, so that the thermal insulation element remains statically stable even at points with higher loads.
  • the reinforcing bars 15 can be concreted into the lightweight concrete material of the cuboid base body 11 during the manufacture of the thermal insulation element 10.
  • sleeves during manufacture it is possible to use sleeves during manufacture as a kind of lost circuit through which the reinforcing bars 15 are inserted after the lightweight concrete element 11 has hardened.
  • the reinforcing bars 15 themselves are in the exemplary embodiment made of a fiber composite material which consists of glass fibers aligned in the direction of the force and a synthetic resin matrix.
  • a glass fiber reinforcement bar has an extremely low thermal conductivity, which is up to 100 times lower than that of reinforcing steel, and is therefore ideally suited for use in the thermal insulation element.
  • the use of reinforcing bars made of stainless steel is also possible and is included in the scope of the present invention, in particular when using sleeves as lost formwork.
  • the dimensions of the reinforcement bars 15, without the invention being restricted to this, are 16 mm in diameter and 930 mm in length in the exemplary embodiment.
  • the arrangement of the reinforcing bars 15 with respect to the base area of the base body 11 is chosen slightly outside the main diagonals. The reason for this is that the reinforcement rods 6 ′ of the support 1 are already located in the corners of the support 1, into which the reinforcement bars 15 of the thermal insulation element 10 are installed.
  • the reinforcement bracket 17 consists of a ring bent, stainless steel, which is welded at the connection point.
  • the reinforcement bracket 17 has a diameter of approximately 200 mm with a material thickness of 8 to 10 mm.
  • the base body 11 of the thermal insulation element 10 has an edge length of 250 x 250 mm in the exemplary embodiment.
  • the height is 100 mm and therefore corresponds to the usual thickness of a subsequently installed thermal insulation layer.
  • the through opening runs, especially in Fig. 4 can be seen, slightly conical in that the through opening 14 tapers from an upper dimension of 70 mm to a lower dimension of 65 mm.
  • the passage opening can be closed by means of a corresponding, likewise slightly conical plug (not shown).
  • Fig. 5 shows the thermal insulation element in a side view, wherein additional peripheral seals 18 are attached to the base body 11.
  • the seals 18 can be designed, for example, as rubber lips or conventional sealing tapes. They serve to seal the base body 11 of the thermal insulation element 10 so that it is edge-tight against a formwork for the support to be created underneath, in order to prevent concrete from rising or air from penetrating.
  • Fig. 6 shows the installation situation of the thermal insulation element in relation to a support 1.
  • the cross section shown runs below the base body 11 of the thermal insulation element 10.
  • the support 1 made of in-situ concrete has reinforcement with four vertical reinforcement bars 6 'arranged in the corners of the support 1 and a large number Reinforcement stirrups 6 "running approximately square around the reinforcement bars 6 '.
  • the reinforcement bars 15 of the thermal insulation element 10 are each slightly offset next to one of the reinforcing bars 6 'of the support 1.
  • the in Fig. 6 drawn line BB corresponds to the cut of the in Fig. 7 shown longitudinal section through the column reinforcement.
  • Fig. 7 the reinforcement of the support 1 together with the thermal insulation element 10 is shown in a longitudinal section.
  • the cut corresponds to the cut line BB Fig. 6 .
  • the reinforcement of the support 1 consists of four vertical reinforcement bars 6 'arranged in the corners of the support, which can be made, for example, of structural steel with a bar diameter of 28 mm and a length of 2000 mm, and a plurality of reinforcement brackets running horizontally around the reinforcement bars 6' 6 "with an approximately square plan.
  • Above the column reinforcement is the thermal insulation element 10, the reinforcement bars 15 of which project downward into the column reinforcement.
  • the reinforcement content of column 1 is approximately 3-4%. With a typical thermal conductivity of the structural steel of approx. 50 W / (m ⁇ K) compared to concrete with 1.6 W / (m ⁇ K), it contributes roughly half to the total thermal conductivity of the column. By using the combination of lightweight concrete and glass fiber reinforcement in the area of the thermal insulation element 10, the heat transfer between the column 1 and the floor ceiling 3 can thus be reduced by approximately 90% compared to a direct monolithic connection.
  • a formwork 19 is built around the column reinforcement 6 ', 6 "and the lower area 1' is filled with in-situ concrete. This is compacted in a conventional manner with an internal vibrator.
  • the thermal insulation element 10 is then inserted into the formwork 19 from above and its reinforcing bars 15 pressed into the still liquid in-situ concrete
  • the base body 11 is pressed against the fresh in-situ concrete until the liquid concrete rises slightly upwards in the through opening 14, so that it is ensured that the column 1 and the base body are between the concrete 11 of the thermal insulation element 10 is no longer present, then the vibrating bottle of a concrete vibrator is passed through the passage opening 14 into the fresh in-situ concrete located below, in order to compact it again the thermal insulation element 10 can be slightly raised by the volume of the concrete displaced by the vibrating bottle.
  • the post-compression of the still liquid fresh concrete through the through opening 14 of the heat insulation element 10 leads to an intimate connection of the heat insulation element 10 with the in-situ concrete located underneath.
  • hollow places due to the formation of voids or sedimentation in the fresh concrete between the thermal insulation element 10 and the support 1 are prevented.
  • the conical profile on the underside of the base body 11, in particular, contributes to this, due to the rising air bubbles or cement water separated on the surface, collecting mainly in the central region of the passage opening 14.
  • the passage opening 14 is then closed by means of a conical stopper (not shown).
  • the sealing plug can be made of an insulating material such as polystyrene or the like. exist and serves to prevent the penetration of in-situ concrete into the through opening 14 when the floor 3 is subsequently created. In this way, any thermal bridges due to a concrete filling in the through opening 14 are avoided. Subsequently, the storey ceiling 3 above is created above the thermal insulation element 10 in a conventional manner.
  • the passage opening 14 can also be used as a filling opening for filling the formwork for the support 1 with in-situ concrete.
  • the thermal insulation element is inserted into the still empty formwork of the column 1 and, if necessary, the reinforcement bars 15 are connected to the column reinforcement.
  • Fresh concrete is poured into the formwork through the passage opening 14 of the thermal insulation element and then compacted by inserting a vibrating bottle of an internal vibrator through the passage opening 14.
  • the fresh concrete is compacted against the underside of the thermal insulation element from above through the passage opening 14.
  • the support 1 can also be made from self-compacting concrete, or the support 1 can be compacted by an external vibrator. In the latter two cases, the through opening 14 thus serves only as a filling opening.
  • FIG. 10 In addition to installation in the upper area of a support, installation in the foot area of a support is also conceivable. Such an arrangement is shown in an alternative embodiment in Figure 10 shown.
  • the support 1 is arranged here between the base plate 2 and the upper floor 3.
  • a thermal insulation element 10 according to the invention is installed in the foot region of the support 1, the reinforcing bars 15 of which protrude from the base plate 2 into the upper region of the support 1 and are connected there to the reinforcement 6 of the support 1.
  • a heat insulation layer 5 made of insulation boards of a known type is attached to the top of the floor panel 2.
  • the production can take place in such a way that the thermal insulation element 10 is connected to the reinforcement 2 'before the base plate 2 is concreted.
  • the base plate 2 is then poured from in-situ concrete, so that the concrete rises against the thermal insulation element 10 from below.
  • the in-situ concrete can in turn be compacted through the central through opening with a vibrating tool.
  • the reinforcement 6 of the support is created and connected to the reinforcement bars 15 of the thermal insulation element.
  • the formwork for the support 1 is then built up around the thermal insulation element 10 and then the support 1 is poured and compacted from in-situ concrete in a conventional manner.
  • thermal insulation element itself can be adapted to the component located below and / or above it.
  • thermal insulation elements can be adapted to the typical cross sections of supports with a round, square or rectangular outline.
  • Typical dimensions of round supports are diameters of 24 and 30 cm, or of supports with a rectangular layout of 25 x 25 cm and 30 x 30 cm. Thermal insulation elements with such a geometry can also be combined as desired to form larger supports or retaining walls.
  • thermal insulation elements described here are particularly suitable for use with pendulum supports and wall supports with low clamping moments.
  • use with load-bearing outer walls is also possible, in that the heat insulation elements are installed at a suitable distance from one another and any remaining gaps between the individual heat insulation elements are filled with non-load-bearing insulation material.
  • the geometrical design of the profiled underside of the thermal insulation element can also be realized in a variety of other ways, for example in a step shape, a radial toothing, an annular bead and much more.
  • openings can additionally or alternatively be provided for subsequent grouting of any remaining cavities between the thermal insulation element and the concrete surface located underneath.
  • Such openings can be closed with blind plugs and opened if necessary in order to subsequently fill any remaining cavity with a potting compound such as a potting mortar or a synthetic resin compound and thus establish a secure static connection, even if in individual cases a faulty execution when creating the support or the installation of the thermal insulation element had led to a poor connection.
  • indicators can be provided on the thermal insulation element, which can be pushed up in the manner of a float and thereby indicate that the thermal insulation element has contact with the in-situ concrete underneath on its underside.
  • thermal insulation element When installing the thermal insulation element in the already compacted, fresh concrete of the support underneath, during subsequent compacting and when pulling out the compacting tool from the through opening of the thermal insulation element, it may be advantageous if a defined pressure force is exerted on the thermal insulation element.
  • rod-shaped reinforcement means for connecting the thermal insulation element to the building parts above and below can be used within the scope of the present invention, for example threaded rods, dowels or the like, since, as explained above, the connection between a support and a floor slab above it statically as a joint connection can be considered and the reinforcement at this point must therefore preferably have a constructive function.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Claims (12)

  1. Élément d'isolation thermique pour le découplage thermique entre des parties de bâtiment porteuses à réaliser en béton, de préférence entre une partie de bâtiment verticale, en particulier un pilier (1), et une partie de bâtiment horizontale située au-dessus ou au-dessous de celle-ci, en particulier un plancher d'étage (3), l'élément d'isolation thermique (10) présentant un corps de base (11) qui est constitué au moins partiellement d'un matériau transmettant les forces de compression et qui présente des surfaces d'appui supérieure et inférieure (12, 13) pour la liaison verticale avec les parties de bâtiment (1, 2, 3),
    caractérisé en ce que
    le corps de base (11) de l'élément d'isolation thermique (10) est constitué au moins partiellement d'un matériau transmettant les forces de compression et thermiquement isolant, à savoir de béton léger, et présente un ou plusieurs moyens d'armature en forme de barres, en particulier des barres d'armature (15), qui traversent le corps de base (11), s'étendent sensiblement verticalement au-delà des surfaces d'appui supérieure et inférieure (12, 13) et sont constituées d'un matériau composite à base de fibres.
  2. Élément d'isolation thermique selon la revendication 1, dans lequel les barres d'armature (15) sont insérées dans des manchons qui sont noyés dans le matériau transmettant les forces de compression.
  3. Élément d'isolation thermique selon la revendication 1 ou 2, lequel présente au moins une ouverture de passage (14) qui s'étend de la surface d'appui supérieure (12) à la surface d'appui inférieure (13) et qui est conçue pour le passage d'un appareil de compactage pour béton frais.
  4. Élément d'isolation thermique selon la revendication 3, dans lequel la surface d'appui inférieure (13) présente une surface profilée en trois dimensions, en particulier une surface inclinée ou incurvée en forme d'entonnoir en direction de l'ouverture de passage (14).
  5. Élément d'isolation thermique selon la revendication 3 ou 4, comportant un bouchon de fermeture de préférence conique pour la fermeture ultérieure de l'ouverture de passage (14), le bouchon de fermeture étant de préférence constitué d'un matériau thermiquement isolant.
  6. Élément d'isolation thermique selon l'une des revendications précédentes, comportant un étrier d'armature (17) disposé à l'intérieur du matériau transmettant les forces de compression.
  7. Élément d'isolation thermique selon l'une des revendications précédentes, lequel présente un module d'élasticité qui est inférieur au module d'élasticité du béton normal, de préférence de 30 à 70 % du module d'élasticité du béton normal.
  8. Élément d'isolation thermique pour le découplage thermique entre des parties de bâtiment porteuses à réaliser en béton, de préférence entre une partie de bâtiment verticale, en particulier un pilier (1), et une partie de bâtiment horizontale située au-dessus ou au-dessous de celle-ci, en particulier un plancher d'étage ou une dalle de sol (2, 3), l'élément d'isolation thermique (10) présentant un corps de base (11) qui est au moins partiellement constitué d'un matériau transmettant les forces de compression et qui présente des surfaces d'appui supérieure et inférieure (12, 13) pour la liaison verticale avec les parties de bâtiment (1, 2, 3),
    caractérisé en ce que
    le corps de base (11) de l'élément d'isolation thermique (10) est constitué au moins partiellement d'un matériau transmettant les forces de compression et thermiquement isolant, à savoir de béton léger, et présente un ou plusieurs manchons traversant verticalement le corps de base (11) de la surface d'appui supérieure (12) à la surface d'appui inférieure (13), qui sont conçus pour l'insertion de moyens d'armature en forme de barres, en particulier de barres d'armature (15), s'étendant sensiblement verticalement au-delà des surfaces d'appui supérieure et inférieure (12, 13).
  9. Partie de bâtiment verticale porteuse, réalisée en béton, en particulier un pilier (1), comportant une première surface d'appui (12, 13) pour la liaison supportant la charge avec une partie de bâtiment horizontale à réaliser en béton au-dessus ou au-dessous de celle-ci, en particulier un plancher d'étage ou une dalle de sol (2, 3), la partie de bâtiment verticale présentant une armature (6, 7) avec un ou plusieurs moyens d'armature en forme de barres, en particulier des barres d'armature (7, 15), s'étendant sensiblement verticalement au-delà de la première surface d'appui (12, 13),
    dans laquelle une zone (4) de la partie de bâtiment verticale, adjacente à la première surface d'appui (12, 13), est réalisée sous la forme d'un élément d'isolation thermique (10) selon l'une des revendications précédentes pour le découplage thermique entre la partie de bâtiment verticale et la partie de bâtiment horizontale à réaliser au-dessus ou au-dessous de celle-ci,
    dans laquelle la zone (4) formant l'élément d'isolation thermique (10) est constituée au moins partiellement d'un matériau transmettant les forces de compression et thermiquement isolant, à savoir de béton léger, et
    dans laquelle les moyens d'armature (7', 15) s'étendant au-delà de la première surface d'appui (12, 13) sont constitués d'un matériau composite à base de fibres et s'étendent sensiblement verticalement à travers la première zone (4) de la partie de bâtiment verticale formant l'élément d'isolation thermique (10) jusque dans une deuxième zone (1') qui s'y raccorde, dans laquelle la partie de bâtiment verticale est réalisée en béton normal armé.
  10. Procédé de réalisation d'une partie de bâtiment verticale en béton, en particulier d'un pilier (1), comportant une première surface d'appui (12, 13) pour la liaison supportant la charge avec une partie de bâtiment horizontale à réaliser en béton au-dessus ou en dessous de celle-ci, en particulier un plancher d'étage (3), dans lequel :
    - une première zone (1') de la partie de bâtiment verticale (1) est réalisée en béton normal armé,
    - une deuxième zone (4) de la partie de bâtiment verticale (1) située entre la première surface d'appui (12) et la première zone (1') est constituée au moins partiellement d'un matériau transmettant les forces de compression et thermiquement isolant, à savoir de béton léger, afin de servir d'élément d'isolation thermique (10) pour le découplage thermique entre la partie de bâtiment verticale (1) et la partie de bâtiment horizontale (3) à réaliser au-dessus ou au-dessous de celle-ci, et
    - dans la deuxième zone (4) de la partie de bâtiment verticale (1) formant l'élément d'isolation thermique (10), des moyens d'armature en forme de barres, en particulier des barres d'armature (7, 15) en matériau composite à base de fibres, sont insérés, qui s'étendent à travers la deuxième zone (4) de la partie de bâtiment verticale (1) sensiblement verticalement jusque dans la première zone (1') adjacente et au-delà de la première surface d'appui (12).
  11. Procédé selon la revendication 10, dans lequel
    - une armature (6) et un coffrage disposé autour de l'armature (6) sont réalisés pour la première zone (1') de la partie de bâtiment verticale,
    - du béton normal frais est coulé dans le coffrage jusqu'à la hauteur de la première zone (1') de la partie de bâtiment verticale (1),
    - des barres d'armature (7) en matériau composite à base de fibres sont insérées dans une première zone du coffrage, qui correspond à la deuxième zone (4) de la partie de bâtiment verticale (1) et
    - la deuxième zone (4) de la partie de bâtiment verticale (1) est ensuite réalisée en coulant du béton léger frais dans la première zone du coffrage.
  12. Procédé selon la revendication 10, dans lequel
    - une armature (6) et un coffrage disposé autour de l'armature (6) sont réalisés pour la première zone (1') de la partie de bâtiment verticale (1),
    - du béton normal frais est coulé dans le coffrage jusqu'à la hauteur de la première zone (1') de la partie de bâtiment verticale (1) et
    - la deuxième zone (4) de la partie de bâtiment verticale (1) est formée par un élément d'isolation thermique (10) selon l'une des revendications 1 à 8 qui est inséré dans le coffrage.
EP16164249.1A 2015-04-23 2016-04-07 Dispositif et procede de couplage thermique de parties betonnees de batiment Active EP3112542B1 (fr)

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SI201630754T SI3112542T1 (sl) 2015-04-23 2016-04-07 Naprava in postopek za toplotno ločitev betoniranih delov zgradbe
PL16164249T PL3112542T3 (pl) 2015-04-23 2016-04-07 Urządzenie i sposób do oddzielenia termicznego betonowanych części budynku
EP20164907.6A EP3690159B1 (fr) 2015-04-23 2016-04-07 Enveloppe de bâtiment et procédé d'isolement thermique des enveloppes de bâtiment en béton

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DE102015106294.1A DE102015106294A1 (de) 2015-04-23 2015-04-23 Vorrichtung und Verfahren zur Wärmeentkopplung von betonierten Gebäudeteilen

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DK (1) DK3112542T3 (fr)
HU (1) HUE050718T2 (fr)
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EP3467220B1 (fr) * 2017-10-09 2023-06-07 Schöck Bauteile GmbH Partie de bâtiment et procédé de fabrication d'une telle partie de bâtiment
DE102018130843A1 (de) 2018-12-04 2020-06-04 Schöck Bauteile GmbH Vorrichtung zur Wärmeentkopplung zwischen einer betonierten Gebäudewand und einer Geschossdecke sowie Herstellverfahren
DE202019100581U1 (de) * 2019-01-31 2020-05-04 Hartmann Hauke Gebäude mit einer Wand und einer auf dieser Wand aufliegenden Decke, Gebäude mit einer Wand, Bewehrungselement, Bewehrungsbauteil und Bewehrungsbaugruppe
CN111779129A (zh) * 2020-08-18 2020-10-16 中国十七冶集团有限公司 高层阳台装饰柱与剪力墙柱平台结构同步浇筑的施工方法
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EP3690159C0 (fr) 2025-08-27
EP3690159B1 (fr) 2025-08-27
CA2928063A1 (fr) 2016-10-23
US20160312460A1 (en) 2016-10-27
US10041244B2 (en) 2018-08-07
SI3112542T1 (sl) 2020-09-30
EP3690159A1 (fr) 2020-08-05
DK3112542T3 (da) 2020-06-02
DE102015106294A1 (de) 2016-10-27
PL3112542T3 (pl) 2020-08-10
HUE050718T2 (hu) 2020-12-28
EP3112542A1 (fr) 2017-01-04

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