EP0391127B1 - Vorrichtung zum Einbringen einer Dichtungsmembran in einen suspensionsgefüllten Erdschlitz - Google Patents

Vorrichtung zum Einbringen einer Dichtungsmembran in einen suspensionsgefüllten Erdschlitz Download PDF

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Publication number
EP0391127B1
EP0391127B1 EP90105259A EP90105259A EP0391127B1 EP 0391127 B1 EP0391127 B1 EP 0391127B1 EP 90105259 A EP90105259 A EP 90105259A EP 90105259 A EP90105259 A EP 90105259A EP 0391127 B1 EP0391127 B1 EP 0391127B1
Authority
EP
European Patent Office
Prior art keywords
guide rails
membrane
rails
slot
spacer
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.)
Expired - Lifetime
Application number
EP90105259A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0391127A1 (de
Inventor
Günther Dipl-Ing. Körber
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.)
Bauer Spezialtiefbau GmbH
Original Assignee
Bauer Spezialtiefbau 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 Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Priority to AT90105259T priority Critical patent/ATE82606T1/de
Publication of EP0391127A1 publication Critical patent/EP0391127A1/de
Application granted granted Critical
Publication of EP0391127B1 publication Critical patent/EP0391127B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material

Definitions

  • the invention relates to a device for introducing a sealing membrane into a suspension-filled earth slot, wherein membrane sheets are successively attached laterally and connected to one another at the attachment point, according to the preamble of claim 1.
  • Such devices are used in civil engineering for the production of sealed, vertical diaphragm walls, which usually consist of a suspension of water, cement, clay or bentonite and other additives. They serve as a barrier in the ground.
  • the sealing membranes made of stainless steel or plastic are integrated for complete and reliable sealing. As the construction progresses, individual membrane sheets must be continuously attached to one another and connected to one another.
  • the rails each consist of two opposite half-shells, which are arranged in such a way that the vertical edges of the shells each form a first and a second guide gap for two foils to be attached to one another.
  • Two guides are used alternately at the respective attachment point or at the free edge of the next membrane sheet to be drawn in, with one guide remaining in its position unchanged in two successive pulling-in processes and the other guide being laterally offset by the width of the two membrane sheets in question.
  • the guides are not arranged absolutely parallel and vertically, considerable friction in the film locks is inevitable.
  • a generic device is known from DE-OS 37 27 202.
  • Hollow bodies spaced apart from one another and lowered into a suspension-filled earth slot have longitudinal slots for guiding the vertical edges of a membrane web to be inserted into the bottom slot.
  • the side edges of the membrane web are gripped by insertion tools and pulled downwards by them.
  • the invention has for its object to provide a device of the type mentioned, with which the membrane sheets to be connected can be retracted precisely into the earth slot filled with suspension with little design effort and little space.
  • the invention has the advantage that tearing of the membrane sheets is reliably prevented. Furthermore, the guide rails, for example designed as a hollow body, can be quickly and easily adapted to different diaphragm wall depths.
  • Tilting of locks or the retracting devices used is prevented by at least one of the two hollow bodies used as guide rails is swinging. This measure simplifies the necessary alignment of the hollow bodies or guide rails used on the one hand in an absolutely vertical position and on the other hand at an equal distance over the entire length. The parallel alignment can take place automatically if the weight-loaded spacer, which is guided on two adjacent hollow bodies, is used.
  • the self-aligning bearing is arranged to be longitudinally displaceable on the membrane guide rail in question, it can be easily adapted to different slot depths and / or to the position of the guide wall in question.
  • a particularly expedient and simple embodiment of the self-aligning bearing consists in the fact that it consists of two pins which are arranged on the opposite sides of the membrane guide rail or on the outer sides of the two half-shells if the guide rail consists of two half-shells.
  • the carriages arranged at both ends of the spacer are provided with a ballast weight. These weights ensure that the film attached to the spacer is lowered substantially automatically.
  • each carriage In order to prevent the carriages from jamming within their guide rails, it is expedient to provide each carriage with at least two rollers lying one behind the other in the direction of movement.
  • the rail or the carriage receiving the rail is expediently provided with a U-profile, the U-legs of which serve on the inside as a running surface for the rollers. The roles are further secured in position by an L-leg.
  • the rail can be advantageous to design the rail as a T-piece and to provide a pair of roller arrangement, the inner sides of the T-legs each serving as a running surface for one of the rollers.
  • a carriage guide designed in this way also proves to be protected against tilting transversely to the film or to the longitudinal axis of the slot.
  • the earth slot 10 illustrated in the figures is used to produce a diaphragm wall.
  • the earth slot 10 is filled with a suspension 11 of water, cement, clay or bentonite and other additives.
  • a membrane 12 is introduced, which consists of membrane sheets welded or to be welded together 12a and 12b is composed. Plastic or stainless steel can be used as the membrane material.
  • Hollow bodies are used as lateral guide rails 13, 14 for the vertical edges of the membrane tracks 12a, 12b, each consisting of a first and a second half-shell 17, 18. Since both hollow bodies are the same, only reference is made to the left-hand hollow body in the following description in connection with the structural details.
  • the half-shells 17, 18 are each made of steel and their length is dimensioned such that they extend from the bottom of the slot 10 to the surface of the suspension 11. Each half-shell 17, 18 has a bulge to form a cavity 20, a left and right vertical sealing edge 21, 22 and a bottom. In the example shown here, the left and right sealing edges 21, 22 are designed as an outwardly projecting band which can carry an elastic sealing lip. If the first and second half-shells 17, 18 are pressed against one another at their sealing edges 21, 22, a cavity which is open at the top and is otherwise sealed is created.
  • first and second half-shells 17, 18 are held at a predetermined distance from one another, a first and a second vertical guide gap 23, 24 are formed between the pairs of opposite shell edges, between which the edge regions 25, 26 of the membrane membranes 12a, 12b in question are reliable and can be inserted into the earth slot 10 with a precise fit.
  • a spacer 31 is guided in the manner described below by means of two carriages 29, 30, with which the two guide rails 13, 14 are aligned parallel to one another.
  • releasable clamping devices 32 for fastening the lower end of the membrane web 12b.
  • the carriages 29, 30 each comprise a pair of rollers 33, 34 arranged one behind the other in the direction of movement.
  • the rollers 33, 34 are connected via axis extensions 35 and intermediate pieces 36 to the spacer 31 which is suspended, for example, from a crane (not shown) and which is provided with a ballast weight.
  • the slide rails 27, 28 have a U-cross section with an opening directed away from the membrane 12, so that the inner sides of the U-legs serve as running surfaces for the rollers 33, 34.
  • one of the U-legs is provided with an L-leg 37 encompassing the rollers 33, 34.
  • Each of the two guide rails 13, 14 is provided with a self-aligning bearing 38, 39 for support or for collection on a guide wall 40 (FIG. 2).
  • pins 41 and 42 are arranged longitudinally displaceably on brackets 43, 44 on each outer side of the half-shells 17, 18 transversely to the membrane plane.
  • a vertical guide for the membrane web 12b is also illustrated in accordance with FIG. 1.
  • the associated sealing edge 22 is provided with a vertical groove 46, in which a web 47, which is applied to the membrane web 12b, is guided.
  • the vertical pull of the carriages 29, 30 relieves these film locks, and none of them can lateral forces due to canting occur.
  • the membrane sheet 12a and the rail 13 are already lowered in the earth slot 10.
  • the second guide rail 14 is then lowered into the earth slot at a distance corresponding to the width of the membrane 12b and supported on the pendulum bearing 39. Due to its own weight, the guide rail 14, like the guide rail 13, is oriented exactly vertically, the pendulum axis extending transversely to the membrane 12. Then the lower end of the membrane sheet 12b to be inserted is clamped in with the aid of the fastening devices 32, and the two carriages 29, 30 are inserted into the slide rails 27 'and 28, the spacer 31 being held on a crane by means of a cable suspension 48.
  • the spacer 31, in cooperation with the carriages 29, 30, ensures a very high accuracy of the parallelism of the two guide rails 13, 14 and an essentially smooth movement. If it is necessary to compensate, the two guide rails 13, 14 can pivot relative to one another during the lowering.
  • the fastening devices are released, for example with the aid of a cable (not shown), and the spacer 31 with the carriages 29, 30 can be withdrawn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Tents Or Canopies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP90105259A 1989-04-05 1990-03-20 Vorrichtung zum Einbringen einer Dichtungsmembran in einen suspensionsgefüllten Erdschlitz Expired - Lifetime EP0391127B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90105259T ATE82606T1 (de) 1989-04-05 1990-03-20 Vorrichtung zum einbringen einer dichtungsmembran in einen suspensionsgefuellten erdschlitz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911043 1989-04-05
DE3911043A DE3911043A1 (de) 1989-04-05 1989-04-05 Vorrichtung zum einbringen einer dichtungsmembran in einen suspensionsgefuellten erdschlitz

Publications (2)

Publication Number Publication Date
EP0391127A1 EP0391127A1 (de) 1990-10-10
EP0391127B1 true EP0391127B1 (de) 1992-11-19

Family

ID=6377936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105259A Expired - Lifetime EP0391127B1 (de) 1989-04-05 1990-03-20 Vorrichtung zum Einbringen einer Dichtungsmembran in einen suspensionsgefüllten Erdschlitz

Country Status (3)

Country Link
EP (1) EP0391127B1 (enrdf_load_stackoverflow)
AT (1) ATE82606T1 (enrdf_load_stackoverflow)
DE (2) DE3911043A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003065326A2 (en) 2002-01-31 2003-08-07 Instrumentel Limited Wireless remote control systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428297C3 (de) * 1984-08-01 1994-02-24 Zueblin Ag Verfahren zur Verbindung von als zusätzliche Durchströmungs- und/oder Diffusionsbarriere dienenden Membranen und Verbindungsrohr zur Verwendung bei diesem Verfahren
DE3444690A1 (de) * 1984-12-07 1986-06-12 Ed. Züblin AG, 7000 Stuttgart Verfahren und vorrichtung zum einbringen von paneelen in schlitzwaende
DE3444691A1 (de) * 1984-12-07 1986-06-12 Ed. Züblin AG, 7000 Stuttgart Verfahren und vorrichtung zum einbau von flaechigen dichtelementen in schlitzwaende
DE3540270A1 (de) * 1985-11-13 1987-05-14 Wayss & Freytag Ag Verfahren zur herstellung einer dichtwand und vorrichtung zur durchfuehrung des verfahrens
DE3727202A1 (de) * 1987-08-14 1989-03-02 Held & Francke Bau Ag Verfahren zum herstellen von abdichtenden schlitzwaenden

Also Published As

Publication number Publication date
DE3911043A1 (de) 1990-10-11
DE59000475D1 (de) 1992-12-24
EP0391127A1 (de) 1990-10-10
DE3911043C2 (enrdf_load_stackoverflow) 1992-04-23
ATE82606T1 (de) 1992-12-15

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