Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D90/00—Component parts, details or accessories for large containers
  • B65D90/48—Arrangements of indicating or measuring devices
  • B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
  • B65D90/501—Arrangements of indicating or measuring devices of leakage-indicating devices comprising hollow spaces within walls
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
  • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts

Definitions

• the invention relates to a large-area double plate, in particular made of thermoplastic material.
• This double slab is particularly suitable for pouring into concrete or mortar and thus for corrosion protection of concrete constructions due to anchor knobs on the back.
• linings are increasingly prescribed by the authorities, which are to be provided as a tight and stable double-jacket version with a leakage gap in between as a monitoring space.
• the linings here have to consist of two permanent sealing layers which are separated by a monitoring space, the leakage gap.
• DE-A-38 30 439 describes a method for producing a leak gap between two mutually independent plates.
• the leakage gap is formed between a tight plate facing the load side and a perforated plate lying behind it at a leakage gap distance, the holes of which, however, are not tight.
• the leakage gap is therefore not enclosed by two dense thermoplastic sheets, so that liquid penetrating into the leakage gap can reach the concrete. As a result of these leaks, one cannot speak of two sealing layers.
• DE-P 41 35 641.1 discloses a method in which two single plates are joined to form a double plate, the anchors to be poured into the concrete being offset with respect to spacers which serve to connect the two plates.
• the spacer and anchor are welded onto the plates in two separate work steps, and the connection of the two plates is then made via the spacers in a third operation. Due to the offset of the anchors with respect to the spacers, the anchoring forces must be transferred laterally offset over the rear plate into the spacers attached to the front plate. To accommodate this power transmission, a corresponding thickness of the rear plate is required, which would otherwise not be necessary for the actual purpose of producing a tight leakage gap.
• the invention has for its object to provide a double plate, in particular made of thermoplastic material, which has a tight leakage gap, against external forces even with a small amount material is stable and is simple and inexpensive to manufacture.
• the invention is based on the following basic ideas.
• a non-perforated front thermoplastic plate facing the load side is tightly and non-positively connected to a perforated rear thermoplastic plate via a multiplicity of thermoplastic anchor knobs protruding through the perforated plate while maintaining an intervening gap.
• the part of the anchor knobs protruding over the double plate is poured into concrete or mortar when the double plate is installed.
• the connection of the two thermoplastic sheets to form a double sheet is carried out in such a way that both parts of the connected thermoplastic sheets represent their own sealing layer.
• An important advantage of the invention is that the anchor knobs cast into the concrete for mechanical anchoring of the double plate in a straight line and thus statically favorable passage conduct the forces acting on the double plate into the subsurface.
• the rear plate therefore has no forces to transmit or redirect and can be kept thin for the intended use.
• a further advantage of the invention lies in the economical production possibility, which allows the double plate to be produced in one operation.
• FIGS 1 to 4 cross sections through different embodiments according to the invention.
• a front plate 1 facing the stress side is welded to another rear plate 3 facing a concrete side with the aid of anchor knobs 5.
• the rear plate 3 has depressions 4 at the connection points to the anchor knobs, through whose openings 7 the cylindrical ends 5b of the anchor knobs 5 pass.
• the conical or otherwise shaped part 5c of the anchor knobs 5 protruding beyond the plate 3 serves for anchoring the double plate by pouring the anchor knobs into fresh concrete or mortar.
• the size and shape as well as the number of anchor knobs per m 2 depend on the requirements of a uniform anchoring of the leak protection lining made of the double plates under assembly and operating conditions.
• the weld connection is preferably carried out by friction welding, for example vibration or rotary welding. 2, the connection of the two plates 1 and 3 is made by the anchor knobs 5 so that their plate 5a is welded onto the plate 1 by friction welding onto the joint 6b and at the same time the plate 3 is welded to the surface of the plate in the weld joint 6a.
• the anchor knob 5 extends through the opening 7 in the plate 3 and later serves for mechanical anchoring in concrete or mortar.
• the width of the leakage gap 2 is determined by the height of the plate 5a.
• the simultaneous weld connection in the weld joints 6a and 6b is effected, for example, by rotational welding of the core knobs 5.
• the joint in the joints 6a and 6b is effected simultaneously during the rotational welding.
• the anchor knobs 5 can also be welded onto the plate 1 first with a separate welding method in order to carry out the second tight and non-positive welding of the rear plate 3 with the plate 5a of the anchor knobs 5 via the joint 6a with a in a second operation other welding processes.
• the plate 1 is connected to the plate 3 by means of rotational welding of the anchor knobs 5 extending through the opening 7.
• a depression 10 located in the plate 3 simultaneous welding in the joints 6a and 6b is achieved when the anchor knobs 5 rotate.
• the width of the leak gap 2 is determined by the depth of the depression 10.
• an annular joint 9 running in the plane of the plate 3 following the anchor knob 5 the plate 3 can expand somewhat in relation to the position of the anchor knob 5 and thus reduce the rigidity of the double plate during its assembly.
• the double plate is produced in a preferred method by friction welding. However, other welding processes are also possible, for example using a heating element or ultrasound.
• the plates 1 and 3 can also be connected to the anchor knobs 5 by adhesive technology.
• the leakage gap 2 de double plate can also be divided into several liquid-tight sections by sealing strips 12. At these sections through the plate 1 and the concrete wall 1 leading outward drainage and ventilation devices 13 and 14 can be provided, which allow a section-wise checking of the double plate for leaks. In this way, the position of a leak can advantageously be localized more precisely, so that a possible repair of a damaged double plate is simplified.
• Di sealing strips 12 can be welded between the plates 1 and 3.
• Several double plates can be combined to form a system, in particular a container. Before preferably in a container, the drainage devices 1 are attached to the lower end of the sections and the ventilation devices 14 at the upper end of the sections, so that leakage fluid can flow downwards.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Sewage (AREA)
• Laminated Bodies (AREA)
• Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
• Casting Or Compression Moulding Of Plastics Or The Like (AREA)
• Preparation Of Compounds By Using Micro-Organisms (AREA)
• Motorcycle And Bicycle Frame (AREA)
• Glass Compositions (AREA)

Applications Claiming Priority (5)

Publications (2)

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Family Applications (1)

Country Status (7)

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• 1993
  • 1993-12-16 AT AT94902779T patent/ATE153624T1/de not_active IP Right Cessation
  • 1993-12-16 AU AU66535/94A patent/AU677057B2/en not_active Ceased
  • 1993-12-16 WO PCT/EP1993/003583 patent/WO1994013560A1/fr not_active Ceased
  • 1993-12-16 CN CN93120133A patent/CN1097231A/zh active Pending
  • 1993-12-16 DE DE59306616T patent/DE59306616D1/de not_active Expired - Fee Related
  • 1993-12-16 EP EP94902779A patent/EP0673341B1/fr not_active Expired - Lifetime
  • 1993-12-17 TW TW082110712A patent/TW286336B/zh active

Non-Patent Citations (1)

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