EP0580926A1 - Dichtung für Ortbetonschlitzwände und Verfahren zur Herstellung der Schlitzwände - Google Patents

Dichtung für Ortbetonschlitzwände und Verfahren zur Herstellung der Schlitzwände Download PDF

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Publication number
EP0580926A1
EP0580926A1 EP92830431A EP92830431A EP0580926A1 EP 0580926 A1 EP0580926 A1 EP 0580926A1 EP 92830431 A EP92830431 A EP 92830431A EP 92830431 A EP92830431 A EP 92830431A EP 0580926 A1 EP0580926 A1 EP 0580926A1
Authority
EP
European Patent Office
Prior art keywords
joint
excavation
members
joint members
panels
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.)
Withdrawn
Application number
EP92830431A
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English (en)
French (fr)
Inventor
Adelchi Miatello
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.)
Ing Giovanni Rodio & C Impresa Costruzioni Speciali SpA
Original Assignee
Ing Giovanni Rodio & C Impresa Costruzioni Speciali SpA
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 Ing Giovanni Rodio & C Impresa Costruzioni Speciali SpA filed Critical Ing Giovanni Rodio & C Impresa Costruzioni Speciali SpA
Priority to EP92830431A priority Critical patent/EP0580926A1/de
Publication of EP0580926A1 publication Critical patent/EP0580926A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/185—Bulkheads or similar walls made solely of concrete in situ with flexible joint members between sections
    • 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
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6806—Waterstops

Definitions

  • the invention relates to a sealing joint which is located in buried walls formed by concrete panels and a to process for building such walls.
  • Such walls are known in the art as diaphragms and are used particularly in the operations preceding the foundation works in case there are required works to support the soil and/or for hydraulic partitions.
  • the excavation, and therefore the building of the whole wall can be carried out according to two different techniques: either through successive excavations, that is by digging a first excavation, casting the concrete thereinto, then digging a second excavation adjacent to the former one and casting the concrete thereinto and so on; or by means of alternating excavations, that is digging a first series of excavations arranged along the same direction and spaced among them, and forming in situ a series of primary or main panels therein, and then digging a second series of excavations in the intermediate sections, in which secondary or connecting panels are formed in situ.
  • sealing joints also known as water-stop devices, which are sheets (or septa) of an elastically deformable material located internally to the walls and extending for the whole height thereof and transversally to the line of junction between adjoining panels and astride this line.
  • the water-stop device is positioned transversally to the direction of water penetration, thus ensuring a hydraulic seal.
  • Such guide tube comprises a steel structure like a beam in the whole length of which there are fixed, at half of their width and perpendicularly to the "beam", a number of sheets of rubber or similar material, i.e. the above mentioned water-stop devices. After the concrete has been cast, such sheets remain half-embedded along their major axis in the so formed panel; the other half is fixed in the guide tube and is released with the removal of the guide tube, thus protruding for its whole length from the lateral face of the panel.
  • the free half is embedded into this latter and realizes a waterproof device between the two panels that seals the so obtained junction.
  • the known prior art further includes another process which is the object of DE-A-3 430 789 to ZÜBLIN.
  • connection members being provided in correspondence of the junction line between the panels and being made up by parts having circular cross sections inserted one into the other.
  • the new structure of the joint does not allow for the coesistence of a metal reinforcement that is necessary whenever panels of reinforced concrete are to be used.
  • the method uses the known self-hardening muds for coping with the problem of joining together waterproof membranes in the excavation of a plastic diaphragm.
  • the object of the present invention is to overcome the above mentioned drawbacks of the prior art by providing a joint and a process as above defined that are suitable for panels of reinforced concrete, that allow for firmly positioning the water-stop device within the concrete diaphragm and further allow for a perfectly vertical extraction of the guide tubes when these latter are provided for.
  • the invention concerns a sealing joint (or water-stop joint) between two adjoining panels in a diaphragm, with the joint being located at an intermediate position between said two panels and transversally with respect to their junction line, said joint comprising two separate members of an elastically deformable material wherein the first joint member is housed at least partially within said first panel, and the second joint member is housed at least partially within said second panel, characterized in that said joint members occupy only the outmost portion of the respective panel, that the first joint member is provided with means for being connected to a related support structure, and that the joint members have portions that are sealingly engageable with one another.
  • a further object of the present invention is a process for building two adjacent panels in a diaphragm, the panels being equipped with at least one sealing joint of the above described type, characterized in that it comprises:
  • Fig. 1 is a view of the first member 1 of a joint according to the invention and comprising a flat portion 2 and a circular hollow portion 3.
  • the circular portion 3 is interrupted by a slot 4 extending for the whole length of the joint.
  • the second member 5 of the joint has exactly the same shape of the first member and provides a hollow circular portion 3' that can be either expandable or solid and a flat portion 2' radially extending from the former one, as illustrated in Fig. 2.
  • the only differences between the two members concern the longitudinal slot and the size of the circular portion. Such differences are due to the fact that the two members of the joint 1 are to be axially connected together as illustrated in Fig. 3, with the circular portion of the second joint member received within the hollow circular portion 3 of the first one.
  • Tranverse ribs 6 are provided on the flat portions in the joint members for a better grip of the concrete.
  • Fig. 4 shows a first embodiment of a support structure of the joint.
  • the above illustrated problems of the prior art techniques are due to the necessity of removing the guide tube.
  • the problem has been solved by renouncing to the guide tube and creating a joint support means that remains fixed to the reinforcement within the concrete even after the complete setting of this latter.
  • Such joint support means comprises a series of reticular meshes or loops 7 equally spaced along the height of the joint and hinged at 8 to the reinforcement 9 of the panel 10.
  • the outer shaped portion of the first joint member is engaged by an extractable tubular member or core 13.
  • Fig. 5 shows a second embodiment of the support structure of the joint. It comprises a usual guide tube 11 having a special shape that allows to overcome the problems encountered in the prior art. More precisely it is a conventional guide tube having a different connection system with the water-stop device taking into account that the water-stop device is designed as formed by two separate members. More precisely, in the case of a water-stop device designed as the one illustrated in Fig. 3, i.e. provided with a hollow inner shaped portion 3, the guide tube provides a cylindrical "projection" or core adapted for engaging the inside of said hollow shaped portion in such a way as to be axially slidable.
  • extractable supports or cores the number of such cylindrical “projections” 13, hereinafter called extractable supports or cores, depends upon the number of water-stop devices which they are to engage with.
  • Fig. 6 illustrates the process for building two adjoining panels 10 and 12 by using the joint support structure shown in Fig. 4.
  • the first step provides for the anchoring of the first member of each water-stop device 1 to the metal reinforcement 9 of the panel through the meshes 7 (step A).
  • this step it is further provided to engage the shaped outer parts of the first joint members with extractable cores 13.
  • such reinforcement including the water-stop device, is inserted into the properly prepared excavation.
  • step B the joint can be retained from above thanks to connecting hinges 8 between the joint and the reinforcement, so as to reduce its dimensions during the step in which it is inserted into the excavation up to its disappearance in the cage size; then, when the reinforcement 9 reaches the bottom of the excavation, the joint is released until it comes into contact with the inner wall of the excavation.
  • step C the casting of the concrete is carried out and thereafter the adjoining excavation is accomplished (step D).
  • step D the inner core 13 is extracted from each first joint member 1 (step E) to allow for the insertion of the second joint member 5 (step F).
  • step G concrete is cast (step G) and after its setting, a sealing of the two joint members (step H) is accomplished by injecting an expandable material, e.g. a cement mixture or mortar, into the tubular central hollow core of the second joint member.
  • the sealing can be obtained by injecting a bonding agent into the gap separating the outer face of the second joint member from the inner face of the first joint member.
  • the second joint member can have a solid central core.
  • Fig. 7 illustrates the process for building two adjoining panels in accordance with the embodiment of joint support structure shown in fig. 5.
  • step (A) the first joint member 1 is fitted onto the shaped core projection 13 of the guide tube 11; then (step B) the whole structure is inserted into a suitably prepared excavation 10.
  • step C the guide tube can be vertically extracted (step D), of course before the concrete setting has been completed; the particular connection between the guide tube 11 and the water-stop device 1 allows the vertical extraction of the guide tube without altering the attitude of the water-stop device within the cast panel.
  • the first member 1 is then sealingly coupled to the second member 5 of the joint, in a way similar to step H of the previously disclosed process, either by deforming or bonding the inner seat. Also in this respect there applies what has been mentioned above with reference to step H of Fig. 6.
  • Fig. 8 better illustrates which portions of the water-stop device are inserted into the excavations according to whether the alternating excavation technique (8A) or the consecutive excavation technique (8B) is used. Namely in the first case each excavation and therefore each primary panel carries the first joint members at both ends, whereas the secondary panels carry second joint members at their ends.
  • each excavation carries the second joint member at the connection end with the preceding panel, and the first joint member at the end to be connected with the subsequent panel.
  • the joint support structures shown in Figures 4 and 5 respectively can be modified for carrying not a single joint but more joints so as to further improve the waterproof characteristic in some particular situation.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
EP92830431A 1992-07-31 1992-07-31 Dichtung für Ortbetonschlitzwände und Verfahren zur Herstellung der Schlitzwände Withdrawn EP0580926A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92830431A EP0580926A1 (de) 1992-07-31 1992-07-31 Dichtung für Ortbetonschlitzwände und Verfahren zur Herstellung der Schlitzwände

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92830431A EP0580926A1 (de) 1992-07-31 1992-07-31 Dichtung für Ortbetonschlitzwände und Verfahren zur Herstellung der Schlitzwände

Publications (1)

Publication Number Publication Date
EP0580926A1 true EP0580926A1 (de) 1994-02-02

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EP92830431A Withdrawn EP0580926A1 (de) 1992-07-31 1992-07-31 Dichtung für Ortbetonschlitzwände und Verfahren zur Herstellung der Schlitzwände

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EP (1) EP0580926A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040233A1 (fr) * 1996-04-19 1997-10-30 Compagnie Du Sol Paroi moulee a armature continue, procede de realisation d'une telle paroi et coffrage pour realiser cette paroi
GB2325262A (en) * 1997-05-12 1998-11-18 Kvaerner Cementation Found Ltd Hydrophilic waterbar for diaphragm wall joints
EP1803853A1 (de) * 2006-01-03 2007-07-04 Eurogeo srl Verfahren zur Herstellung von Schlitzwänden mit Kontrolle und Richtigstellung der Vertikallage und derart hergestellte Schlitzwand
WO2013007968A2 (en) 2011-07-14 2013-01-17 Coupland John William Diaphragm wall apparatus and methods
EP3006626A1 (de) * 2014-10-08 2016-04-13 I.CO.P Spa Begrenzungsrohr zur konstruktion von beton-schlitzwänden
CN110055952A (zh) * 2019-03-14 2019-07-26 姚燕明 一种地下连续墙接头结构及其施工方法
US10988911B2 (en) 2017-04-26 2021-04-27 Ccmj Systems Ltd Diaphragm walls
US11225769B2 (en) 2018-02-15 2022-01-18 Ccmj Systems Ltd Shear key former apparatus and method(s)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349102A1 (de) * 1973-09-29 1975-04-24 Goodrich Europ Fugenstreifen fuer betonbauwerke und verfahren zum anordnen dieses fugenstreifens in einem betonbauwerk
FR2517717A1 (fr) * 1981-12-09 1983-06-10 Soletanche Armature de paroi moulee continue, procede de realisation d'une telle paroi, dispositif pour la mise en oeuvre de ce procede et paroi moulee comportant l'armature
DE3404074A1 (de) * 1984-02-06 1985-08-08 Dyckerhoff & Widmann AG, 8000 München Verfahren zum herstellen einer schlitzwand aus beton
DE3430789A1 (de) * 1984-08-22 1986-03-06 Ed. Züblin AG, 7000 Stuttgart Verfahren zum einbringen und verbinden von membranen in schlitzwaenden und vorrichtung zur durchfuehrung des verfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349102A1 (de) * 1973-09-29 1975-04-24 Goodrich Europ Fugenstreifen fuer betonbauwerke und verfahren zum anordnen dieses fugenstreifens in einem betonbauwerk
FR2517717A1 (fr) * 1981-12-09 1983-06-10 Soletanche Armature de paroi moulee continue, procede de realisation d'une telle paroi, dispositif pour la mise en oeuvre de ce procede et paroi moulee comportant l'armature
DE3404074A1 (de) * 1984-02-06 1985-08-08 Dyckerhoff & Widmann AG, 8000 München Verfahren zum herstellen einer schlitzwand aus beton
DE3430789A1 (de) * 1984-08-22 1986-03-06 Ed. Züblin AG, 7000 Stuttgart Verfahren zum einbringen und verbinden von membranen in schlitzwaenden und vorrichtung zur durchfuehrung des verfahrens

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040233A1 (fr) * 1996-04-19 1997-10-30 Compagnie Du Sol Paroi moulee a armature continue, procede de realisation d'une telle paroi et coffrage pour realiser cette paroi
US6052963A (en) * 1996-04-19 2000-04-25 Compagnie Du Sol Continuously reinforced diaphragm wall, method of construction and formwork therefor
GB2325262A (en) * 1997-05-12 1998-11-18 Kvaerner Cementation Found Ltd Hydrophilic waterbar for diaphragm wall joints
WO1998051867A1 (en) * 1997-05-12 1998-11-19 Kvaerner Cementation Foundations Limited Hydrophilic waterbar for diaphragm wall joints
GB2325262B (en) * 1997-05-12 2001-05-02 Kvaerner Cementation Found Ltd Hydrophilic waterbar for diaphragm wall joints
US6276106B1 (en) 1997-05-12 2001-08-21 Kvaerner Cementation Fondations Limited Hydrophilic waterbar for diaphragm wall joints
EP1803853A1 (de) * 2006-01-03 2007-07-04 Eurogeo srl Verfahren zur Herstellung von Schlitzwänden mit Kontrolle und Richtigstellung der Vertikallage und derart hergestellte Schlitzwand
WO2013007968A2 (en) 2011-07-14 2013-01-17 Coupland John William Diaphragm wall apparatus and methods
US9371623B2 (en) 2011-07-14 2016-06-21 Ccmj Systems Ltd Diaphragm wall apparatus and methods
EP3006626A1 (de) * 2014-10-08 2016-04-13 I.CO.P Spa Begrenzungsrohr zur konstruktion von beton-schlitzwänden
US10988911B2 (en) 2017-04-26 2021-04-27 Ccmj Systems Ltd Diaphragm walls
US11225769B2 (en) 2018-02-15 2022-01-18 Ccmj Systems Ltd Shear key former apparatus and method(s)
CN110055952A (zh) * 2019-03-14 2019-07-26 姚燕明 一种地下连续墙接头结构及其施工方法

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