EP0509934B1 - Procédé de guidage de l'outil d'excavation utilisé pour la réalisation d'une paroi moulée dans le sol, et outil d'excavation pour la mise en oeuvre de ce procédé - Google Patents

Procédé de guidage de l'outil d'excavation utilisé pour la réalisation d'une paroi moulée dans le sol, et outil d'excavation pour la mise en oeuvre de ce procédé Download PDF

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Publication number
EP0509934B1
EP0509934B1 EP92401097A EP92401097A EP0509934B1 EP 0509934 B1 EP0509934 B1 EP 0509934B1 EP 92401097 A EP92401097 A EP 92401097A EP 92401097 A EP92401097 A EP 92401097A EP 0509934 B1 EP0509934 B1 EP 0509934B1
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EP
European Patent Office
Prior art keywords
guiding means
excavation
tool
guiding
excavation tool
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
EP92401097A
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German (de)
English (en)
French (fr)
Other versions
EP0509934A1 (fr
Inventor
Paul Dupeuble
Jacques Charlier
Jean-Claude Gessay
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.)
Sondages Injections Forages SIF Enterprise Bachy
Original Assignee
Sondages Injections Forages SIF Enterprise Bachy
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Application filed by Sondages Injections Forages SIF Enterprise Bachy filed Critical Sondages Injections Forages SIF Enterprise Bachy
Publication of EP0509934A1 publication Critical patent/EP0509934A1/fr
Application granted granted Critical
Publication of EP0509934B1 publication Critical patent/EP0509934B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/26—Safety or control devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/47—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets
    • E02F3/475—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets for making foundation slots

Definitions

  • the invention relates to a method for guiding the excavation tool used for the production of a wall molded into the ground, as well as a modified excavation tool useful for the implementation of this method.
  • the walls molded into the ground are executed by alternating or successive elementary panels.
  • the finished work is therefore made up of a succession of unitary panels which must be able to guarantee geometric continuity during execution.
  • two channels are used independently or jointly.
  • the first consists in giving to excavation tools (mechanical or hydraulic skips in the case of discontinuous excavation and extraction of spoil, or drum or chain cutters, or rotary cutters in the case of continuous excavation and extraction) a body of great slenderness and of section very close to the excavation section, so as to achieve, in conjunction with the lowering of the center of gravity, self-guidance on the excavation even during execution.
  • Control and correction devices can be incorporated into the excavation tools so as to more or less effectively correct any deviation from the theoretical trajectory.
  • the second consists in more or less effectively guiding the excavation tool on the previously executed panel.
  • the formwork put in place at the end of the panel before concreting is extracted like a sliding formwork before the complete setting of the concrete.
  • the vacuum thus created allows to ensure a certain guidance of the excavation tool when the next panel is executed.
  • European patent No. 0 101 350 describes a specific process for extracting the end formwork by lateral formwork which also makes it possible, at the same time, to effectively guide the excavation tool.
  • the guiding function of this device is subject to its simultaneous formwork, the primary object of the invention described.
  • this guiding method is basically based on the sliding of two elements one inside the other.
  • This system is therefore suitable in the case of the use of clamshell buckets as an excavation tool, but is less well suited in the case of the use of continuous excavation tools such as cutters and wall milling cutters.
  • the invention aims to provide a new method for guiding the excavation tool used for the production of a wall molded in the ground which makes it possible to avoid any discontinuity between the successive panels of a wall molded in the ground, while being simple to implement.
  • the guiding method of the invention is designed to avoid or overcome the difficulties caused by the invasion of the guiding means used by a hardenable material, such as concrete or cement laitance, an invasion which creates obstacles. hampering the proper functioning of said guide means. These obstacles are the cause of the practical failure of most of the sophisticated guidance systems that have been imagined in the past.
  • the first means integral with the excavation tool, consists of a vertical element, of generally planar shape, such as an iron or steel plate, and the second guide means , provided in a sacrificial element secured to the end of the previously executed panel or in a temporary formwork adjoining said end, consists of a groove or groove extending vertically over the height of said element or formwork and in the vicinity of the central part of this one.
  • the guide means consist of two vertical elements, of generally planar shape, spaced apart, parallel to each other, integral with the excavation tool, coming to engage, respectively, two grooves formed between the banks a sacrificial element secured to the end of the previously executed panel or a temporary formwork attached to it and the surrounding land.
  • the guide means used in the method of the invention make it possible to prevent the adjacent ends of two successive panels forming the diaphragm wall from diverging with respect to each other both in a direction transverse to the plane of the wall and in the very plane of the wall.
  • the method of the invention is particularly suitable for the case where the excavation tool is a continuous excavator comprising drums or cutting chains rotating in opposite directions.
  • the excavation tool is a continuous excavator comprising drums or cutting chains rotating in opposite directions.
  • it is in fact very easy to create a force tending to keep the guide means mutually engaged, by playing on the relative speeds of the drums or lifting chains, that is to say by making them rotate faster. or the drums or chains of hoisting generating, by friction against the ground, a force directed towards the wall panel previously produced.
  • the correct control of the excavation tool can be checked by means of inclinometers and possibly proximity switches installed in the excavation machine.
  • the invention also relates to an excavation device suitable for the implementation of the above-mentioned variant e) of the method of the invention.
  • This trench excavation device comprises an excavation tool of the chain or drum cutter type, comprising at least a first guide means characterized by at least one auxiliary tool fixed to the excavation tool and engaging in a guide groove or groove forming a second guide means cooperating with the first guide means of the excavation tool so that these two guide means can slide freely one inside the other, in order to eliminate there all obstacles, said first guide means being freely disengageable from said guide groove or groove over the entire length thereof.
  • the auxiliary tool can be as described in variant e) and can either be arranged below the guide means fixed to the excavation tool, or act as a guide means itself.
  • guide means consisting of one or two vertical elements, of generally planar shape, integral with the excavation tool , capable (s) of sliding in one or two stationary grooves
  • these guide means could be reversed.
  • the excavation tool could carry one or two elements forming groove (s) which can come to engage, in a sliding manner, on one or two rib (s) or rail (s) integral with the end of the previously executed panel or of a temporary formwork attached to said end and extending vertically over the height of said panel or formwork.
  • This usually metallic formwork is provided with a vertical groove 3 extending over its entire length and in the vicinity of its central part.
  • the excavation of the trench where the next panel will be molded is carried out using an excavation tool 4, such as a continuous excavation cutting machine, to which is fixed a metal plate 5 serving as a guide means .
  • This plate 5 is engaged in the groove 3 at the start of the excavation operation and slides there freely from top to bottom as the tool sinks into the ground, avoiding any transverse deviation of the tool compared to the formwork.
  • a force, oriented in the direction of arrow F is generated by appropriate control of the tool 4 and keeps the plate 5 engaged in the groove 4 during the excavation operation, thus avoiding any deviation. of the tool in the same plane of the trench in progress.
  • FIG. 2 shows a guidance mode similar to that of FIG. 1 except that recourse is had to an excavation tool 4 which comprises two guide plates 5 arranged laterally, engaged in two grooves 3 formed between the edges of the formwork and terrain 6 itself.
  • the plates 5 of the tool guide the latter by sliding in the grooves 3.
  • care is taken to generate a force F tending to press the tool against the formwork so as to maintain the plates 5 engaged in the grooves 3.
  • Figures 3 to 8 illustrate various means for preventing the invasion of the groove or grooves.
  • Figures 3a and 3b show the use of filling the groove or grooves with a material 7 of low mechanical strength, for example polyurethane foam, which can be easily destroyed and subsequently eliminated. This filling is carried out before placing the formwork 2 in the ground and concreting the panel 1 so as to avoid any invasion of the groove or grooves by a hardenable material capable of forming obstacles.
  • a material 7 of low mechanical strength for example polyurethane foam
  • Figure 4 shows the temporary obstruction by an inflatable tube 8 of a guide groove 3 of circular cross section.
  • the tube 8 is deflated and extracted from the groove before engagement of the guide plate secured to the excavation tool.
  • FIG. 5 shows the use of an extractable filling element 9, such as a metal plate, to temporarily close the groove and protect it from invasion.
  • This extractable element is forcibly extracted before engaging the guide plate fixed to the excavation tool in the groove.
  • Figure 6 shows the use of a seal plug 10 to seal the entry of the groove and prevent its invasion. This seal plug will be destroyed before engaging the guide plate in the groove.
  • FIG. 7 shows the use of a valve 11 fixed on the formwork, on one side only of the groove, to avoid the flooding of the groove. This valve will be moved aside by the guide plate as it slides in the groove.
  • FIG. 8 illustrates the use of an inflatable element 12 and / or of an extractable element 13 for temporarily closing lateral grooves formed between a formwork and the ground (case of the embodiment of FIG. 2).
  • Figures 9 to 12 illustrate various means for destroying obstacles formed in the groove or grooves in the case where they have been allowed to be invaded, in order to make them suitable for their guiding function.
  • FIGS. 9a and 9b are elevation and plan views, respectively, showing the clearance of a groove of circular cross section invaded by hardened material, using a rotary drilling tool 14 used from the surface, before the installation of the excavation tool.
  • FIGS. 10a and 10b are elevation and plan views, respectively showing the clearance of a groove of circular cross section invaded by hardened material, using a percussive drilling tool 15, such as a hammer downhole type, independent of the excavation tool but working at the same time as the excavation tool so as to clear the groove as and as the excavation tool sinks into the ground.
  • a percussive drilling tool 15 such as a hammer downhole type
  • Figures 11a and 11b are elevation and plan views, respectively, showing the clearance of a groove provided in the central part of a formwork and invaded by a hardened material, using a cutting chain 16 , mounted on the excavation tool at a level lower than that of the guide plate, which clears the groove as the excavation tool sinks into the ground.
  • the cutting chain can be driven by the same motor as that which actuates the excavation tool or by a different motor.
  • Figure 12 is a plan view showing the release of lateral grooves invaded by a hardened material using two chains 16 of cutting, similar to that of Figures 11a and 11b, but arranged on the sides of the tool excavation.
  • the two chains can be driven by a mechanism 17 driven by the same motor as that which actuates the excavation tool or by a different motor.
  • chains 16 can act as the first guide means so that the guide plates can be omitted.
  • cutting chains could be replaced by milling wheels.
  • cutting chains or milling wheels
  • FIGS. 11 and 12 could be used to destroy the fillings of weak resistance material described in connection with FIGS. 3 or 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Earth Drilling (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Harvesting Machines For Root Crops (AREA)
EP92401097A 1991-04-19 1992-04-17 Procédé de guidage de l'outil d'excavation utilisé pour la réalisation d'une paroi moulée dans le sol, et outil d'excavation pour la mise en oeuvre de ce procédé Expired - Lifetime EP0509934B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104847 1991-04-19
FR9104847A FR2675526A1 (fr) 1991-04-19 1991-04-19 Procede de guidage de l'outil d'excavation utilise pour la realisation d'une paroi moulee dans le sol, et outil d'excavation pour la mise en óoeuvre de ce procede.

Publications (2)

Publication Number Publication Date
EP0509934A1 EP0509934A1 (fr) 1992-10-21
EP0509934B1 true EP0509934B1 (fr) 1995-03-22

Family

ID=9412047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92401097A Expired - Lifetime EP0509934B1 (fr) 1991-04-19 1992-04-17 Procédé de guidage de l'outil d'excavation utilisé pour la réalisation d'une paroi moulée dans le sol, et outil d'excavation pour la mise en oeuvre de ce procédé

Country Status (11)

Country Link
US (1) US5263798A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0509934B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH06316935A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE120248T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU656368B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2066359A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE69201743T2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2039324T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2675526A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GR (1) GR930300042T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
TW (1) TW216812B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6503025B1 (en) * 2000-01-11 2003-01-07 Philip Glen Miller Precast concrete beam element and methods of making and installing same
US6671938B2 (en) 2000-12-27 2004-01-06 United Technologies Corporation Pneumatic press vane lift installation tool
US20060239782A1 (en) * 2005-04-21 2006-10-26 Hunt Arthur V Methods and apparatuses for shaping concrete slab-on-ground foundations
PL2378002T3 (pl) 2010-04-16 2013-12-31 Bauer Maschinen Gmbh Urządzenie frezujące do wytwarzania w ziemi wykopów biegnących pionowo
IT1401736B1 (it) * 2010-07-19 2013-08-02 Soilmec Spa Dispositivo di perforazione per l'esecuzione di diaframmi e relativo metodo.
GB201112136D0 (en) 2011-07-14 2011-08-31 Coupland John W Diaphragm wall apparatus and methods
GB201706643D0 (en) 2017-04-26 2017-06-07 Ccmj Systems Ltd Diaphragm walls
GB2571097B (en) 2018-02-15 2021-08-25 Ccmj Systems Ltd Shear key former apparatus and method(s)
FR3109163B1 (fr) * 2020-04-14 2022-07-15 Soletanche Freyssinet Dispositif de coffrage muni d’un dispositif de mesure de déviation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531733A1 (fr) * 1982-08-11 1984-02-17 Sif Entreprise Bachy Procede et dispositif d'extraction d'un coffrage dans le cadre de la realisation d'une paroi moulee dans le sol
US4861199A (en) * 1986-01-11 1989-08-29 Alfred Hackmack Slit trencher
US4909674A (en) * 1987-05-28 1990-03-20 Kajima Corporation Underground continuous impervious wall and method for installing same
FR2617881B1 (fr) * 1987-07-10 1990-11-16 Spie Batignolles Procede pour realiser une paroi moulee dans le sol et coffrages destines notamment a sa mise en oeuvre
FR2628772B1 (fr) * 1988-03-18 1990-08-24 Sif Entreprise Bachy Systeme de guidage de l'outil d'excavation utilise pour la realisation d'une paroi moulee dans le sol
US5056242A (en) * 1989-05-12 1991-10-15 Finic, B.V. Underground wall construction method and apparatus
FR2647828B1 (fr) * 1989-06-06 1991-08-30 Soletanche Procede et dispositif pour decoller du beton auquel il adhere, un joint d'extremite de panneau de paroi moulee dans le sol

Also Published As

Publication number Publication date
US5263798A (en) 1993-11-23
TW216812B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-12-01
GR930300042T1 (en) 1993-06-21
EP0509934A1 (fr) 1992-10-21
AU1491792A (en) 1992-10-22
ES2039324T1 (es) 1993-10-01
AU656368B2 (en) 1995-02-02
CA2066359A1 (en) 1992-10-20
DE69201743D1 (de) 1995-04-27
JPH06316935A (ja) 1994-11-15
DE69201743T2 (de) 1995-07-13
ATE120248T1 (de) 1995-04-15
FR2675526A1 (fr) 1992-10-23
DE509934T1 (de) 1993-06-09

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