EP0290303A1 - Durchführungsverfahren und Schalung für die Dichtung eines Schlitzwandabschnittendes - Google Patents
Durchführungsverfahren und Schalung für die Dichtung eines Schlitzwandabschnittendes Download PDFInfo
- Publication number
- EP0290303A1 EP0290303A1 EP88400795A EP88400795A EP0290303A1 EP 0290303 A1 EP0290303 A1 EP 0290303A1 EP 88400795 A EP88400795 A EP 88400795A EP 88400795 A EP88400795 A EP 88400795A EP 0290303 A1 EP0290303 A1 EP 0290303A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formwork
- trench
- sheet
- thin material
- coating
- 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- Withdrawn
Links
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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
- E02D5/182—Bulkheads or similar walls made solely of concrete in situ using formworks to separate sections
Definitions
- the present invention relates to a production method and a formwork for an end joint of a wall panel molded into the ground, and more particularly to such a method in which a trench is dug, a formwork is placed at its end, concretes the trench and extracts the formwork.
- the trench is generally dug under bentonite mud.
- a formwork is immersed in the mud which is placed at the end of the trench. Concrete is then poured to replace the mud, the concrete therefore coming into contact with the formwork.
- a new trench is dug adjacent to the first on the other side of the formwork, generally using it to guide the perforating machine.
- the present invention aims to overcome these drawbacks.
- the invention firstly relates to a process for producing an end joint of a wall panel molded in the ground in which a trench is dug, a formwork is placed at its end, and concrete is placed. the trench, and the formwork is extracted, characterized in that prior to concreting the trench, the face of the formwork is coated on the concrete side with a thin material capable of being abandoned in the trench, and that the formwork substantially vertically.
- a sheet material capable of being folded is used as the thin material, and this sheet is kept on the formwork by folding its edges over the edges of the formwork.
- a sheet of magnetic material is used as the thin material, and this sheet is held on the formwork using electromagnets.
- a sheet of relatively airtight material is used as the thin material, and this sheet is held on the formwork using suction cups.
- a sheet material is used as the thin material, and this sheet is fixed to the formwork using means of low mechanical resistance, such as welding spots or dowels, likely to break during extraction of the formwork.
- the invention also relates to an end formwork for the implementation of the method as described above, characterized in that it comprises, on its face concrete side, a thin coating capable of being abandoned in the trench.
- this formwork comprises, for the maintenance of said coating, electromagnets or suction cups.
- the covering is fixed to the formwork using means of low mechanical resistance.
- a formwork comprising a groove in which an inflatable seal is engaged, the coating then being held on the formwork at least partially by its wedging in said groove using said inflatable seal.
- the method according to the invention comprises the known steps consisting in digging a trench 1 in the ground, most often under bentonite mud, in placing at the end of this trench a formwork 2a, 2b, 2c, for example provided with a seal 3 of the so-called "water-stop" type, for concreting the trench 1, for digging a second 1 ⁇ trench on the other side of the trench 1, and for extracting the formwork.
- the extraction of the formwork had to be carried out, either before the concrete of the trench 1 had completely set in order to avoid too great adhesion, but this imposed a delay very short between the concreting of the trench 1 and the extraction of the formwork, or to have means allowing a lateral displacement of the formwork towards the trench 1 ⁇ in order to ensure its detachment from the concrete of the trench 1.
- the forms 2a, 2b and 2c comprise a sole 4 on which are fixed two watertight boxes 5 delimiting between them a longitudinal groove 6.
- the seals 3 comprise an inflatable core 7 supporting two wings side 8 (figure 1). One of the lateral wings 8 is engaged in the groove 6, as well as at least partially the core 7. The seal 3 is held between the two boxes 5 by inflation of the core 7.
- the face of the formwork facing the concrete side of the trench 1 is coated with thin sheets 9a, 9b, 9c, capable of being abandoned in the trench during the extraction of the formwork.
- the sheets 9a are made of magnetic material, for example galvanized steel, and are held on the formwork during the positioning of the latter by electromagnets 10.
- the sheets 9b are made of a relatively airtight material such as metal or a synthetic material, and are held on the formwork 2b by suction cups 11.
- the suction cups 11 are arranged in holes formed in the walls of the boxes 5, and include a support grid 12 preventing the puncture of the sheets 9b, and an O-ring seal 13 at the periphery of this grid. Means, not shown, make it possible to create a vacuum in the boxes 5 so as to press the sheets 9b against the external walls of the formwork.
- the sheets 9c are made of a material capable of being folded, and are fixed to the formwork 2c by folding their edges 14 around the lateral edge of the sole 4, and their edges 15 inside the groove 6 where they are blocked due to the inflation of the core of the seal 3.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8704710A FR2613395B1 (fr) | 1987-04-03 | 1987-04-03 | Procede de realisation et coffrage pour joint d'extremite de panneau de paroi moulee |
FR8704710 | 1987-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0290303A1 true EP0290303A1 (de) | 1988-11-09 |
Family
ID=9349762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88400795A Withdrawn EP0290303A1 (de) | 1987-04-03 | 1988-04-01 | Durchführungsverfahren und Schalung für die Dichtung eines Schlitzwandabschnittendes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0290303A1 (de) |
JP (1) | JPS6414419A (de) |
DE (1) | DE290303T1 (de) |
FR (1) | FR2613395B1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0580264A1 (de) * | 1992-07-24 | 1994-01-26 | Beheersmaatschappij Verstraeten B.V. | Verfahren und Grabvorrichtung zur Herstellung von Schlitzwänden |
KR20030016030A (ko) * | 2001-08-20 | 2003-02-26 | 삼보건설기계 주식회사 | 기초공사용 콘크리트 타설공법 및 시일링장치 |
US20130255180A1 (en) * | 2012-04-03 | 2013-10-03 | Bauer Spezialtiefbau Gmbh | Shuttering element for a trench wall and method for producing the trench wall |
US9371623B2 (en) | 2011-07-14 | 2016-06-21 | Ccmj Systems Ltd | Diaphragm wall apparatus and methods |
WO2019158901A1 (en) * | 2018-02-15 | 2019-08-22 | Ccmj Systems Ltd | Shear key former apparatus and method(s) |
US10988911B2 (en) | 2017-04-26 | 2021-04-27 | Ccmj Systems Ltd | Diaphragm walls |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2791072B1 (fr) | 1999-03-19 | 2001-06-15 | Cie Du Sol | Dispositif d'aide au decoffrage |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1454173A (fr) * | 1965-11-09 | 1966-07-22 | Tot Aanneming Van Werken Voorh | Procédé de construction d'un mur d'étanchéité en béton, gabarit destiné à être utilisé pour la mise en oeuvre de ce procédé, et mur d'étanchéité construit au moyen de ce procédé |
CH469162A (de) * | 1967-11-28 | 1969-02-28 | Belectra Ag Elektroartikel En | Vorrichtung zum Festhalten von Einbaukörpern an Schalungen für die Erstellung von Betonbauten oder Bauteilen davon |
FR2148706A5 (de) * | 1971-07-30 | 1973-03-23 | Sif Entreprise Bachy | |
US3893302A (en) * | 1973-10-25 | 1975-07-08 | Rapidex Inc | Machine and method for excavating trenches and for constructing walls in trenches |
DE3404073A1 (de) * | 1984-02-06 | 1985-08-08 | Dyckerhoff & Widmann AG, 8000 München | Verfahren zum herstellen einer schlitzwand aus beton |
-
1987
- 1987-04-03 FR FR8704710A patent/FR2613395B1/fr not_active Expired - Lifetime
-
1988
- 1988-04-01 DE DE1988400795 patent/DE290303T1/de active Pending
- 1988-04-01 EP EP88400795A patent/EP0290303A1/de not_active Withdrawn
- 1988-04-04 JP JP8287588A patent/JPS6414419A/ja active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1454173A (fr) * | 1965-11-09 | 1966-07-22 | Tot Aanneming Van Werken Voorh | Procédé de construction d'un mur d'étanchéité en béton, gabarit destiné à être utilisé pour la mise en oeuvre de ce procédé, et mur d'étanchéité construit au moyen de ce procédé |
CH469162A (de) * | 1967-11-28 | 1969-02-28 | Belectra Ag Elektroartikel En | Vorrichtung zum Festhalten von Einbaukörpern an Schalungen für die Erstellung von Betonbauten oder Bauteilen davon |
FR2148706A5 (de) * | 1971-07-30 | 1973-03-23 | Sif Entreprise Bachy | |
US3893302A (en) * | 1973-10-25 | 1975-07-08 | Rapidex Inc | Machine and method for excavating trenches and for constructing walls in trenches |
DE3404073A1 (de) * | 1984-02-06 | 1985-08-08 | Dyckerhoff & Widmann AG, 8000 München | Verfahren zum herstellen einer schlitzwand aus beton |
Non-Patent Citations (1)
Title |
---|
TRAVAUX, janvier 1985, supplément, pages 13-18, Paris, FR: "Le joint CWS - rétablissement des continuités mécanique et d'étanchéité en paroi moulée" * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0580264A1 (de) * | 1992-07-24 | 1994-01-26 | Beheersmaatschappij Verstraeten B.V. | Verfahren und Grabvorrichtung zur Herstellung von Schlitzwänden |
KR20030016030A (ko) * | 2001-08-20 | 2003-02-26 | 삼보건설기계 주식회사 | 기초공사용 콘크리트 타설공법 및 시일링장치 |
US9371623B2 (en) | 2011-07-14 | 2016-06-21 | Ccmj Systems Ltd | Diaphragm wall apparatus and methods |
US20130255180A1 (en) * | 2012-04-03 | 2013-10-03 | Bauer Spezialtiefbau Gmbh | Shuttering element for a trench wall and method for producing the trench wall |
US8820015B2 (en) * | 2012-04-03 | 2014-09-02 | Bauer Spezialtiefbau Gmbh | Shuttering element for a trench wall and method for producing the trench wall |
US10988911B2 (en) | 2017-04-26 | 2021-04-27 | Ccmj Systems Ltd | Diaphragm walls |
WO2019158901A1 (en) * | 2018-02-15 | 2019-08-22 | Ccmj Systems Ltd | Shear key former apparatus and method(s) |
US11225769B2 (en) | 2018-02-15 | 2022-01-18 | Ccmj Systems Ltd | Shear key former apparatus and method(s) |
Also Published As
Publication number | Publication date |
---|---|
DE290303T1 (de) | 1989-06-01 |
FR2613395B1 (fr) | 1991-06-07 |
JPH0435569B2 (de) | 1992-06-11 |
FR2613395A1 (fr) | 1988-10-07 |
JPS6414419A (en) | 1989-01-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE GB IT |
|
17P | Request for examination filed |
Effective date: 19881222 |
|
ITCL | It: translation for ep claims filed |
Representative=s name: MODIANO & ASSOCIATI S.R.L. |
|
GBC | Gb: translation of claims filed (gb section 78(7)/1977) | ||
TCAT | At: translation of patent claims filed | ||
DET | De: translation of patent claims | ||
17Q | First examination report despatched |
Effective date: 19900803 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19910903 |