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WO1997020161A1 - Piece moulee en beton - Google Patents

Piece moulee en beton Download PDF

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Publication number
WO1997020161A1
WO1997020161A1 PCT/EP1996/005297 EP9605297W WO9720161A1 WO 1997020161 A1 WO1997020161 A1 WO 1997020161A1 EP 9605297 W EP9605297 W EP 9605297W WO 9720161 A1 WO9720161 A1 WO 9720161A1
Authority
WO
WIPO (PCT)
Prior art keywords
molding according
concrete
concrete molding
opening
weight
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.)
Ceased
Application number
PCT/EP1996/005297
Other languages
German (de)
English (en)
Inventor
Karl Kortmann
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE29518925U external-priority patent/DE29518925U1/de
Priority claimed from DE29604942U external-priority patent/DE29604942U1/de
Application filed by Individual filed Critical Individual
Priority to AU10954/97A priority Critical patent/AU1095497A/en
Priority to EP96941624A priority patent/EP0864058A1/fr
Publication of WO1997020161A1 publication Critical patent/WO1997020161A1/fr
Priority to DE29720895U priority patent/DE29720895U1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/021—Connection of sewer pipes to manhole shaft
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories

Definitions

  • the invention relates to a molded concrete part according to the preamble of claim 1, which is provided in particular for shaft structures and sewer connections in separator systems of petrol stations or the like.
  • sewer pipes are supported in the wall of a shaft structure via a concrete wall flange.
  • a concrete wall flange formed from gray cast iron, there is a risk of fluid leaks from the surrounding concrete material due to the formation of gaps in the event of changing temperature loads on the shaft structure and / or the sewer pipe. Leakage tests in the installation position of the shaft structure are difficult and can only be carried out in a non-targeted manner.
  • the invention is concerned with the problem of providing a concrete molding of the type mentioned at the outset which provides a reliable seal in the area of sewer pipe connections and opens up improved testing options.
  • the molded concrete part according to the invention with the first holding profile region provided in the through opening, has a connection zone in the manner of a mold abutment, on which the inserted end of a sewer pipe can be fixed axially and radially with little technical effort.
  • the holding profile area is gripped behind by the extension of the inserted pipe end in such a way that the pipe end assumes a precise position, by means of which the sealability is improved and long-term tightness is promoted.
  • the sewer pipe which is made in particular of plastic, is pushed into the through opening in a manner known per se in the axial feed direction, in particular an end face of the sewer pipe being brought into abutment in the axial direction on a molded part near the holding profile area can.
  • a region of the sewer pipe wall is now reshaped in such a way that a cross-sectional profile widening is formed which engages in a form-fitting manner in the first holding profile region which acts as a mold abutment.
  • the second holding profile area enables a secure fixation of one for the purpose of a leak test.
  • Closure part which can be inserted indirectly into the through opening, so that a simplified leak test is also possible in the installed position of the molded part or the shaft structure.
  • the tightness test can detect both the sealing of the sewer pipe in the through opening and the tightness of the entire connection area of the structure, which is of particular importance when the molded part is designed as a socket part and its molding into the shaft structure.
  • this advantageously consists of a fiber material and a plastic dispersion containing cement molding compound, in which the mixture proportions when the socket part is shaped, for example in an appropriate formwork, are distributed so that the hardened socket part offers a rough adhesive structure on its outer wall surface and a smooth sealing structure on its inner wall surface.
  • a sleeve part of such a design and composition has material characteristics which largely correspond to those of the covering material of the shaft structure. Therefore, in the case of temperature fluctuations, essentially the same expansion occurs, as a result of which leakages in the connection area are avoided.
  • Fig. 8 to Fig. 13 respective socket parts with two conical
  • Fig. 20 is a sectional schematic representation of a
  • Fig. 21 is a sectional side view of the
  • FIG. 22 shows a sectional illustration of the sleeve part similar to FIG. 21 with a pushed-in sewer pipe
  • Fig. 23 is a sectional view similar
  • FIG. 24 is a sectional view similar to FIG. 23 with the deformed sewer pipe
  • FIG. 25 is a sectional view similar to FIG. 24 with a second embodiment of the first holding profile area
  • FIG. 26 is a sectional view similar to FIG. 22 with a holding part which fixes the sewer pipe at the insertion end of the sleeve part,
  • FIG. 27 shows a sectional illustration similar to FIG. 26 with the holding part in a second embodiment
  • 28 shows a sectional illustration of the sleeve part in an embodiment with the first and a second holding profile area located in the through opening, 29 is a sectional view in the second holding profile area along a line I - I in FIG. 28,
  • FIG. 30 shows a sectional illustration in the second holding profile region along a line II-II in FIG. 28,
  • FIG. 31 is a sectional view of the sleeve part similar to FIG. 28 with a modified second holding profile area
  • FIG. 34 is a sectional view of the sleeve part similar to FIG. 28 with a modified second holding profile area
  • 35 shows a sectional illustration of the sleeve part with a closure part located in front of its second holding profile area in the open position
  • 36 shows a sectional illustration of a shaped concrete part designed as a shaft structure with holding test areas formed in its wall and the closure part in the open position
  • FIG. 37 shows a plan view of the shaft structure according to FIG. 36 with sewer pipes pushed in on both sides in the installed position.
  • FIG. 1 shows a socket part, designated overall by 1, which is provided for installation in shaft structures 2 (FIG. 20), in particular in the form of concrete castings, for example for a sewage system (FIG. 36, 37) as an oil sludge container or the like is.
  • the sleeve part 1 according to the invention is produced from a cement-concrete molding compound introduced into a formwork mold (not shown), in which both a proportion of fiber material and a proportion of plastic dispersion are mixed. With these mixing proportions in the prepared molding compound and in each case during the molding or during the curing of the molding compound, the molding part 1 is provided on its outer wall surface 3 with a rough adhesive structure and on its inner wall surface 4 with a smooth sealing structure formed in such a way that the socket part 1 is provided with surprisingly advantageous component properties for a concrete casting for improved, functionally appropriate installation.
  • a formwork mold not shown
  • the socket part 1 each has a cylindrical outer wall 3, on which a radial shape extension 5 can be used to enlarge the connecting area with little effort.
  • the shaped projection 5 is designed as a radial ring 6 which has the rough adhesion structure and which is additionally provided with an undercut 9 at least in the region of one of its flanks 7, 8, namely in the region of the flank 8.
  • the sleeve parts 1 have a plurality of shape projections 5, each with the same cross section, the radial ring 6 1 having a rectangular contour and the radial ring 6 ′′ being provided in the form of acute-angled triangles. 8 to 19 show further conceivable embodiments of the socket parts 1 with the shape approaches 5.
  • the smooth inner sealing structure is provided on a cylindrical inner wall, with additional sealing rings 10, 10 ′, 10 ′′ provided in the wall 4 at a distance in the longitudinal direction, provided with different sealing profile cross sections are introduced.
  • Such sealing parts 10, 10 ', 10''are likewise provided in the embodiments of the socket part 1 according to FIGS. 8 to 13, the inner wall surface 4 here additionally having conical edge regions 11, 12 or 11', 12 'as holding profile regions is formed and these conical areas in accordance with the embodiment 10 and FIG. 12 are brought together in the central region of the socket part 1 on the sealing parts 10, 10 ′′.
  • the sealing parts 10, 10 ', 10''are all accommodated in a respective annular groove 13, the sealing part 10''(FIG. 20) also being supported directly between the smooth inner wall surface 4 and an insertion tube 14 can be.
  • the inner wall surface is each formed with a slope (arrow 15 in FIG. 3), so that the sewer pipe 14 shown in FIG. 20 in the installed position without loss of tightness by an installation angle (arrow 16) can be pivoted so that position and connection tolerances to the sewer system (not shown) and / or the respective shaft structure 2 can be compensated for with little effort and a reliably tight connection is achieved in every angular position.
  • the inner wall 4 merges on the one hand into an inner ring 18 narrowing the through opening 17 of the sleeve part 1, with which an additional contact area for the sewer pipe 14 is formed when it is assembled (FIG. 20).
  • the socket part 1 forms with the bevel 15 a preferably acute-angled receiving contour for the sewer pipe 14, with the bevel 15 towards one end 19 (FIGS. 1 to 3) of the socket part 1 forming a thin wall area in such a way that it is at Tempe- fluctuations in temperature experience a particularly small expansion and thus the risk of gaps forming and associated leaks are reliably avoided.
  • the sleeve part 1 described above is provided with a roughness of 0.1 mm to 6 mm, preferably 2 mm, on the outer wall surface 3 of the respective shaft structure 2 (FIG. 20) for the assembly pouring, so that this, in particular when shaping by means of the roughness formed in the fiber cement material, in a respective connection area 20 to the surrounding concrete mass 21, it forms a homogeneous and largely positive and material connection.
  • this area which essentially determines the tightness of the entire manhole component 2
  • an advantageously long-term stable tightness is achieved, which is also ensured in particular if larger temperature differences lead to an expansion of the concrete material of the manhole structure 2 and correspondingly to an expansion of the embedded sleeve part 1 .
  • the same expansion coefficients are achieved in this composite body formed from two parts, unwanted gaps are avoided in the area of the respective connection zone 20, and this component system can therefore also be used in sewer structures for environmentally hazardous material transport.
  • the sleeve part 1 on its inner wall surface 4 is influenced in the form of the formwork in the processing of the cement-concrete molding compound in such a way that one Surface roughness of 0.001 mm to 1 mm, preferably 0.25 mm, is reached.
  • the roughness of less than 0.01 mm is essentially determined by the proportion of the plastic dispersion introduced into the molding composition, which, after hardening on the sleeve wall, envelops the concrete base material in the manner of a smooth cover skin.
  • the sewer pipe 14 can be inserted into each of the sleeve parts 1 shown with minimal frictional resistance and at the same time an inner contact surface is created for additional sealing rings 10, 10 ', 10' 'and / or the sleeve part 1, which enables a secure sealing engagement.
  • the sleeve part 1 consists of a molding material, the proportion of which is in plastic dispersion, approximately 0.05 to 15% by weight, preferably 1% by weight, and the proportion of fiber material in which approximately 0.05 to 20% by weight, preferably 2% by weight .%, each based on the total weight of the molding composition.
  • the plastic dispersion in the molding compound of the sleeve part 1 is in particular formed by a water-dilutable and / or provided as a plastic powder polymer.
  • a concrete plasticizer with a proportion of up to 5% by weight, a pore-forming swelling agent with a proportion of up to 3% by weight and / or in rapid cement with a proportion of up to 40 is included in the molding compound of the socket part 1 as an additive % By weight, based in each case on the total weight of the molding composition.
  • quartz sand as an additive with a proportion of up to 50% by weight and / or as an additive or additive with an electric filter ash with a proportion of 0.05 to 50% by weight and / or as an additive Stone powder with a proportion of 0.05 to 50% by weight, in each case based on the total weight of the molding compound, is provided.
  • concrete accelerators with a proportion of up to 5% by weight, based in each case on the total weight of the molding composition can be introduced as an additive.
  • the proportion of water in the molding compound of the sleeve part 1 each has a proportion of approximately 5 to 60% by weight, preferably 35% by weight, in each case based on the total weight proportion of cement and quick-setting cement.
  • a molding compound with the following composition was used:
  • FIG. 21 shows a sleeve part, designated overall by 101, in a further embodiment, the wall area 4 of the through-opening 17 having a holding profile area 30 in which a radial shaped shoulder 31 (FIG. 24) or 31 '(FIG. 25 ) of the inserted sewer pipe 14 engages in such a way that it is axially fixed via a connection engagement in the manner of a form abutment.
  • the holding profile region 30 is designed as a groove 32, which extends in the form of a ring in the wall region 4 (FIG. 1, FIG. 5). It is also conceivable to provide as a holding profile region 30 a radial projection (not shown) projecting radially from the wall region 4, which is engaged behind by a correspondingly dimensioned shape approach of the sewer pipe 14 and thus forms the connection engagement between the sleeve part 101 and the sewer pipe 14.
  • the basic illustration according to FIG. 23 clarifies that the shape extension 31 engaging in the holding profile area 30 is formed in a suitable embodiment by means of a forming process in the area of the sewer pipe 14.
  • a tool generally designated 34
  • a radial displacement of the wall material can then be achieved via a radial forming force (arrow F), so that a cross-sectional widening is formed on the sewer pipe 14 and this creates a positive connection and axial fixing in the region of the groove 32 forms.
  • the end face of the sewer pipe 14 abuts a shaped part 18, it also being conceivable to form a pipe protrusion in this area without the shaped part 18 (not shown).
  • the sewer pipe 14 consists of a thermoplastic material, so that after a corresponding heating in the area of the tool 34, the plastic is heated and plasticized, so that it can then be formed with little effort and the positive connection (FIG. 24 ) is formed with a complete shape filling in the groove 32. After the cooling of the plastic material, an axial fixation of the sewer pipe 14 is achieved and the tightness of the socket connection is guaranteed at the same time via the press-fit seat of the components which is effective in the area of the sealing rings 10.
  • the reshaping of the radial molding attachment 31 can also be limited to partial areas in the circumferential direction of the tube 14, so that, for example, only the upper area of the molding attachment 31 in the installed position engages in the groove 32 and the lower tube inside diameter remains smooth-walled.
  • the holding profile area 30 is introduced into the wall area 4 in a helical configuration (not shown), so that the positive connection area in the longitudinal direction of the sleeve part 101 is enlarged and the overall connection stability is increased. It is also conceivable to close the sewer pipe 14 with an outer groove provided, in which a ring part is supported in the manner of a snap ring (not shown). After insertion of the sewer pipe 14, this snap ring is partially displaced into the holding profile region 30 and then the sewer pipe 14 has the axial fixation without further deformation.
  • FIG. 26 shows a further embodiment for axially fixing the sewer pipe 14 in the socket part 101, a holding part 35 being provided on the latter, which is fixed on the end face in the region of the insertion end 33 of the socket part 1 and in a connection area 36 supports the sewer pipe 14.
  • the holding part 35 can be provided in addition to the form abutment connection in the area of the holding profile shape 30, so that the axially fixed sewer pipe 14 is supported in a pivotally stable manner via this second support area.
  • the holding part 35 ' is illustrated in a second embodiment, the holding part 35' being formed at one end in the sleeve part 101 and at the other end projecting beyond the insertion end 33 with a holding leg 37 in such a way that, in one example, as an adhesive - Provided or welded connection area 36 ', the sewer pipe 14 can be axially fixed.
  • FIG. 28 shows a longitudinal section of a preferred embodiment of the molded concrete part as a socket part 201, this in the through opening 17 showing the first holding profile area 30 in combination with a second holding profile part. has rich 230.
  • the shaped area 31, 31 'of the sewer pipe 14 (FIGS. 21 to 27) is axially fixed via the first holding profile area 30 and a closure part can be supported in a fluid-tight manner on the second holding profile area 230, which can be used as a plunger, a press bladder, a press balloon or the like can be hidden and a pressure medium is applied after insertion into the holding profile area 230.
  • the closure part 231 is designed as a plug part.
  • the two holding profile regions 30, 230 in the through opening 17 can be produced directly when the through opening 17 is formed during the shaping of the shaped concrete part forming a shaft structure 232 (FIG. 36), for example a sludge collecting container, so that this container is additionally to the first holding profile area 30 has the second holding profile area 230 with a contour provided in the manner of a test seat.
  • a shaft structure 232 for example a sludge collecting container
  • the boundary of the first holding profile region 30 runs coaxially to the longitudinal central axis M of the through opening 17 and the boundary of the second holding profile region 230 has at the same time a lower culmination line K parallel to the longitudinal central axis M of the through opening 17.
  • this culmination line K forms a wall area in which a flow zone is predefined for a liquid flowing in the channel system (arrow S) and thus disadvantageous accumulation ⁇ formations in the area of the two holding profiles 30, 230 Are safely prevented.
  • the passage cross section of the passage opening 17 is narrowed between the two holding profile areas 30, 230 by an abutment ring shoulder 218.
  • 29 and 30 show respective cross-sectional representations of the diameter ratios in the area of the passage opening 17 and the holding profile area 230.
  • the inner contour 233 in the holding profile area 230 forms a groove arc 234 intersecting the culmination line K with an inclination to the longitudinal axis M. 31 to 34, a groove bend 234 'forming a vertical contact area 235 is provided and the flow area S in the area of the culmination line K is designed with an insert 236, which consists, for example, of an acid-resistant material.
  • the passage opening 17 in the holding profile area 230 can be closed in a fluid-tight manner by means of an immediately usable sealing part such that the sealing of the sewer pipe in the passage opening 17 and the tightness of the entire connection area A, A 1 (Fig. 37) of the structure is detected.
  • FIG. 35 shows the closure part 231 in an embodiment with a holding part 237 fixed directly on the sleeve part 201 via a connecting part, on which the closure part 231 provided in the form of a sealing plug 233 and movable in the direction of the longitudinal central axis M so is supported that when moving in the direction of arrow V, the second holding profile area 230 in the manner of a test seat of the conical inner wall 12 ′′ and the passage opening 17 can be closed in a fluid-tight manner.
  • FIG. 36 shows an expedient embodiment of the closure part 231 for the container 232, the closure part 231 being able to be moved via an actuator 238. It is therefore unnecessary to empty the interior of the container 239 during inspections of the connection area and the tightness can be checked with little effort without significant interruption of the function in the duct system.
  • 37 shows a top view of the container 232, this additional being connected to an outer inlet box 240 or similar duct components and a further container 232 'via the respective duct pipes 14, 14'.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

L'invention concerne une pièce moulée en béton dotée d'un passage (17; 17') abritant de manière étanche un tuyau (14, 14') ou insert équivalent. Cet orifice (17, 17') présente sur la pièce moulée en béton (1, 101; 201, 232) de l'invention une première section profilée de maintien (30) destinée à l'appui axial d'une section tubulaire (31; 31') élargie du tuyau (14, 14') et une seconde section profilée de maintien (230) contre laquelle peut s'appuyer une pièce de fermeture (231) de manière étanche au fluide.
PCT/EP1996/005297 1995-11-29 1996-11-29 Piece moulee en beton Ceased WO1997020161A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU10954/97A AU1095497A (en) 1995-11-29 1996-11-29 Moulded concrete unit
EP96941624A EP0864058A1 (fr) 1995-11-29 1996-11-29 Piece moulee en beton
DE29720895U DE29720895U1 (de) 1996-11-29 1997-11-27 Betonformteil in Gestalt eines Behälterteils

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29518925.8 1995-11-29
DE29518925U DE29518925U1 (de) 1995-11-29 1995-11-29 Rohrmuffe
DE29604942U DE29604942U1 (de) 1996-03-16 1996-03-16 Rohrmuffe
DE29604942.5 1996-03-16

Publications (1)

Publication Number Publication Date
WO1997020161A1 true WO1997020161A1 (fr) 1997-06-05

Family

ID=26058422

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/005297 Ceased WO1997020161A1 (fr) 1995-11-29 1996-11-29 Piece moulee en beton

Country Status (3)

Country Link
EP (1) EP0864058A1 (fr)
AU (1) AU1095497A (fr)
WO (1) WO1997020161A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557628B2 (de) * 1975-12-20 1978-12-21 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Verbindung eines rohrförmigen Körpers mit einem aufgesteckten Hohlkörper
SE444220B (sv) * 1981-11-04 1986-03-24 Arnold Wirfalk Anordning for vattentet genomforing av ledningar
EP0561514A1 (fr) * 1992-02-24 1993-09-22 Energiagazdálkodási Részvénytársaság Raccord de tuyaux et méthode pour sa mise en oeuvre
DE4314222C1 (de) * 1993-04-30 1994-08-11 Buderus Guss Gmbh Wanddurchführung an einem Behälter aus Beton

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557628B2 (de) * 1975-12-20 1978-12-21 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Verbindung eines rohrförmigen Körpers mit einem aufgesteckten Hohlkörper
SE444220B (sv) * 1981-11-04 1986-03-24 Arnold Wirfalk Anordning for vattentet genomforing av ledningar
EP0561514A1 (fr) * 1992-02-24 1993-09-22 Energiagazdálkodási Részvénytársaság Raccord de tuyaux et méthode pour sa mise en oeuvre
DE4314222C1 (de) * 1993-04-30 1994-08-11 Buderus Guss Gmbh Wanddurchführung an einem Behälter aus Beton

Also Published As

Publication number Publication date
AU1095497A (en) 1997-06-19
EP0864058A1 (fr) 1998-09-16

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