EP0580264B1 - Verstellbare Absperrvorrichtung für die Grabenabschnitte von Schlitzwänden - Google Patents

Verstellbare Absperrvorrichtung für die Grabenabschnitte von Schlitzwänden Download PDF

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Publication number
EP0580264B1
EP0580264B1 EP19930202190 EP93202190A EP0580264B1 EP 0580264 B1 EP0580264 B1 EP 0580264B1 EP 19930202190 EP19930202190 EP 19930202190 EP 93202190 A EP93202190 A EP 93202190A EP 0580264 B1 EP0580264 B1 EP 0580264B1
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EP
European Patent Office
Prior art keywords
well
tube
panel
ground
excavator
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
EP19930202190
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English (en)
French (fr)
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EP0580264A1 (de
Inventor
Alexander Julien Verstraeten
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.)
Beheersmaatschappij Verstraeten BV
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Beheersmaatschappij Verstraeten BV
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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

Definitions

  • the excavator used consists of a deep-wall cutter, with which a first well or pit of rectangular section is excavated and subsequently, laterally shifted relative thereto, a second pit of rectangular section is excavated, shifted laterally relative to the first pit. Subsequently, the intermediate ground panel is excavated by means of the deep-wall cutter.
  • the panel space thus provided connects to the pits excavated on both sides thereof. Consequently, when the ground panel located between two pits is excavated, there must be an overlap in the principal direction of the wall, and, also, the deviation in a direction perpendicular to the wall to be excavated can only be slight.
  • inclinometers For measuring this deviation in a direction perpendicular to the wall to be excavated, inclinometers are used as described in above-mentioned NL-A-87.02430.
  • the precision of these inclinometers is insufficient to guarantee that the adjoining panels are in sufficient abutment in a direction perpendicular to the plane of the wall.
  • each wall panel In order to obtain a sufficient abutment, each wall panel must be of a thicker design than is necessary. There is a relation between the necessary thickness of the wall and the accuracy with which the position of the wall can be measured at a great depth.
  • the first and the second well are excavated with an excavator of circular section, designed as a drill head, where after the ground panel located between the first and the second well is excavated with a second excavator, laterally fitted with tubular guide elements, which, during excavation, are guided by the walls of the first and the second well.
  • the first well of that next panel must be free of the hardenable mass provided in the preceding panel.
  • the second well prior to filling the preceding panel space with a hardenable mass, the second well is separated from the adjacent ground panel by means of a support tube, securable in this second well as is known form DE-A-1.484.545, where after the newly excavated panel space and the first well are filled with a hardenable mass. In this manner, the second well of the preceding panel is kept clear for receiving the tubular guide element of the excavator during excavation of the adjacent ground panel.
  • this support tube is to provide good sealing properties, the friction during insertion of the tube in and removal thereof from the second well is considerable, limiting the depth of a well in which such support tube is to be placed.
  • the object of the invention is to provide an adjustable closing apparatus of the above described type which is more easily insertable in and removable from a second well of an excavated trench section.
  • Such a support tube can be easily inserted in the second well after excavation of a first ground panel, the inflatable body being directed towards the next ground panel tube excavated.
  • the inflatable body By filling the inflatable body with liquid or air, the opposite side of the tube is pressed in a closing or sealing position against the first ground panel space to be closed.
  • This space is then filled up with a hardenable mass, and after hardening of that mass the liquid or air is removed form the inflatable body, which enables the support tube to be easily removed.
  • the next ground panel can now be excavated, while a guide element of the excavator can be received in the well from which the support tube has been removed.
  • Fig. 1 shows a first panel space A in full lines and a next panel space B in broken lines.
  • the depth L of such a wall is for instance 100 m below the ground level O.
  • the thickness D of the panel space is for instance 1 m, while at a depth of 100 m the overlap d of the two panel spaces must be at least 50 cm in order to obtain an abutting wall that is impervious to water. In that case, the deviation angle ⁇ must not be more than 0.3° and this extremely slight deviation is not measurable by the measuring equipment presently available. Consequently, in order to obtain an overlap of at least 50 cm all the same, the thickness D of the wall panel, and hence the allowable deviation angle ⁇ , will have to be increased.
  • One of the guide tubes 12 is connected to the excavator 10 by means of a parallelogram construction 16, so that lateral play can be taken up.
  • the guide tube 12, connected to the excavator 10 via the parallelogram construction 16 is held against the rubber blocks 18, arranged on the excavator, so that both a positive and a negative play can be taken up.
  • the excavator 10 is suspended from a drill apparatus 1 by means of a cable. It is not necessary to push the excavator 10 into the ground by means of a tube arranged on the trailing end thereof.
  • Mounted on the excavator 10 are pumps 19 for discharging the support liquid blended with the mass of soil, which is fed to a separator 7.
  • the wells 8 accommodating guide tubes 12 have been excavated to a somewhat greater depth than the desired depth of the partition wall to be provided in the ground, in order to accommodate the projecting parts 13 of the guide tubes 12 at the moment when the deep-wall cutter 10 has reached the desired depth.
  • the diameter of the wells 8 is greater than the thickness 15 of the ground panel 11, the thickness 15 corresponding, of course, to the width of the excavator 10.
  • a support tube 20 is arranged in the second well 8, as shown in Fig. 4.
  • This support tube 20 serves to keep open the second well 8 while the hole consisting of the first well 8 and-the panel space 11 connecting thereto is filled with a hardenable mass 22.
  • a hardenable mass for instance a concrete mixture can be used, optionally further provided with a reinforcement.
  • the support liquid 4, present in the panel during excavation, is displaced by the hardenable mass 22 or pumped off.
  • the support tube 20 (see Fig. 6) consists of a metal tube, comprising an inflatable body 21 over at least one-fourth of its circumference, which inflatable body, together with the wall of the support tube 20, constitutes an expandable chamber, which can be filled with air or a liquid under pressure.
  • the support tube 20 is fixed in a well such that the inflatable body 21 abuts against the successive ground panel 11. Consequently, the support tube 20 is secured against the inner wall of the well 8.
  • the support tube 20 is removed from the well 8 after the air or liquid used for expanding the inflatable body 21, is removed by suction. Subsequently, as is shown in Fig. 5, the adjacent ground panel 11 is excavated in the same manner as shown in Fig. 3.
  • the successive panel space thus provided perfectly connects to the preceding panel space, as described hereinabove. Consequently, this means that the thickness of the panel space need not be greater than the necessary thickness d, as shown in Fig. 1. As a result, a considerable saving in material can be achieved. Further, an important advantage is that the total length of the excavator in the direction of the partition wall can be utilized, because an overlap in lateral direction, as shown in Fig. 4 of NL-A-87.02430, is no longer needed.
  • an inflatable body 21 Arranged on one side of the support tube 20 is an inflatable body 21, while on the side opposite this inflatable body there are arranged outwardly projecting support strips 24, between which a sealing strip 23 can be accommodated so as to be axially slidable.
  • this sealing strip 23 can be left in the hardenable mass 22 of the preceding panel space and subsequently be incorporated into the hardenable mass 22, to be provided in the next panel space.

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)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Claims (2)

  1. Verstellbare rohrförmige Absperrvorrichtung für auszubaggernde Grabenabschnitte für den den Einsatz in einem Verfahren für die Herstellung von tiefen Schlitzwänden im Erdreich, welches folgende Schritte umfaßt:
    - Ausbaggern eines ersten Schachtes (8) mit einem kreisförmigem Querschnitt;
    - Ausbaggern eines zweiten Schachtes (8) mit einem kreisförmigem Querschnitt, welcher gegenüber dem ersten Schacht in einem Abstand (9) versetzt angeordnet ist, der in etwa der größten Längenabmessung des Baggers entspricht, welcher für das
    - Ausbaggern des Grabenabschnitt (11) verwendet wird, welcher zwischen dem ersten und zweiten Schacht (8) liegt, wobei der Bagger an seinen Seiten mit rohrförmigen Führungselementen (12) ausgerüstet ist, die während des Aushubs der Wände des ersten und zweiten Schachtes (8) geführt werden;
    - Abtrennung des zweiten Schachtes (8) von dem benachbarten Grabenabschnitt, welcher aus dem ersten Schacht (8) und dem benachbarten Grabenabschnitt (11) besteht, mit Hilfe der rohrförmigen Absperrvorrichtung (20), welche in den zweiten Schacht (8) eingeführt und dort befestigt werden kann; und
    - Auffüllen des benachbarten Grabenabschnittes (8, 11) mit einer härtbaren Masse (22),
    dadurch gekennzeichnet, daß, die verstellbare rohrförmige Absperrvorrichtung ein Stützrohr (20) mit einem Durchmesser enthält, der kleiner ist, als der Durchmesser des zweiten Schachtes und daß dieses Stützrohr (20) an wenigstens einer seiner Seiten mit einem aufblasbaren Körper (21) versehen ist, der sich über mindestens ein Viertel des Rohrumfangs erstreckt und mit einer Flüssigkeit oder Luft aufgeblasen werden kann.
  2. Rohrförmige verstellbare Absperrvorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, daß, das Stützrohr (20) an der dem aufblasbaren Körper (21) gegenüberliegenden Seite mit sich nach außen erstreckenden Montagerippen (24) für die Anordnung von axial gleitenden Dichtlippen (23) aufweist.
EP19930202190 1992-07-24 1993-07-23 Verstellbare Absperrvorrichtung für die Grabenabschnitte von Schlitzwänden Expired - Lifetime EP0580264B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9201345 1992-07-24
NL9201345A NL9201345A (nl) 1992-07-24 1992-07-24 Werkwijze voor het aanbrengen van diepe scheidingswanden in de bodem, alsmede een graafinrichting voor toepassing bij deze werkwijze.

Publications (2)

Publication Number Publication Date
EP0580264A1 EP0580264A1 (de) 1994-01-26
EP0580264B1 true EP0580264B1 (de) 1997-10-08

Family

ID=19861109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930202190 Expired - Lifetime EP0580264B1 (de) 1992-07-24 1993-07-23 Verstellbare Absperrvorrichtung für die Grabenabschnitte von Schlitzwänden

Country Status (3)

Country Link
EP (1) EP0580264B1 (de)
DE (1) DE69314402T2 (de)
NL (1) NL9201345A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20050682A1 (it) * 2005-09-30 2007-04-01 Soilmec Spa Metodo ed attrezzatura per realizzare un diaframma impermeabile di pali secanti.
ITTO20080025A1 (it) 2008-01-14 2009-07-15 Soilmec Spa Attrezzatura per l'esecuzione di fori secanti.
ITPN20080047A1 (it) * 2008-06-13 2009-12-14 Otium & Business S R L "procedimento e dispositivo per la formazione di pannelli a tenuta idraulica in fondazioni edili, fondazioni speciali, diaframmi e costruzioni similari"
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.
JP7033424B2 (ja) * 2017-09-28 2022-03-10 清水建設株式会社 地中連続壁構造
CN115198783B (zh) * 2022-07-08 2023-09-08 中交第二航务工程局有限公司 隔仓式地连墙锚碇基础的施工控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1484545A1 (de) * 1964-11-12 1969-05-29 Josef Riepl Bau Unternehmung F Verfahren zum Herstellen von Betonwaenden mittels in den Erdboden eingegrabener Schlitze
DE1634323B1 (de) * 1966-11-02 1970-07-23 Deutsche Bauakademie Verstellbare Absperrvorrichtung für die Grabenabschnitte von Schlitzwänden
DE1658773B1 (de) * 1968-02-28 1971-08-26 Wolff & Mueller Tunnelbauverfahren
FR2613395B1 (fr) * 1987-04-03 1991-06-07 Soletanche Procede de realisation et coffrage pour joint d'extremite de panneau de paroi moulee
DE3823784A1 (de) * 1988-07-14 1990-01-25 Hochtief Ag Hoch Tiefbauten Verfahren, abdichtungselemente und vorrichtung zur herstellung einer abdichtungsschlitzwand

Also Published As

Publication number Publication date
DE69314402D1 (de) 1997-11-13
DE69314402T2 (de) 1998-02-12
EP0580264A1 (de) 1994-01-26
NL9201345A (nl) 1994-02-16

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