EP1498551A1 - Méthode et équipement pour renforcer une paroi de pieux - Google Patents

Méthode et équipement pour renforcer une paroi de pieux Download PDF

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Publication number
EP1498551A1
EP1498551A1 EP04291663A EP04291663A EP1498551A1 EP 1498551 A1 EP1498551 A1 EP 1498551A1 EP 04291663 A EP04291663 A EP 04291663A EP 04291663 A EP04291663 A EP 04291663A EP 1498551 A1 EP1498551 A1 EP 1498551A1
Authority
EP
European Patent Office
Prior art keywords
anchoring
piles
strengthening
intervals
holes
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Withdrawn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
EP04291663A
Other languages
German (de)
English (en)
Inventor
Chris Merridew
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.)
Soletanche Freyssinet SA
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP1498551A1 publication Critical patent/EP1498551A1/fr
Withdrawn legal-status Critical Current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
    • E02D5/02—Sheet piles or sheet pile bulkheads
    • E02D5/03—Prefabricated parts, e.g. composite sheet piles
    • E02D5/10—Prefabricated parts, e.g. composite sheet piles made of concrete or reinforced concrete
    • 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
    • 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
    • E02D17/20—Securing of slopes or inclines
    • E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/14—Pile framings, i.e. piles assembled to form the substructure
    • 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
    • E02D5/02—Sheet piles or sheet pile bulkheads
    • E02D5/03—Prefabricated parts, e.g. composite sheet piles
    • E02D5/10—Prefabricated parts, e.g. composite sheet piles made of concrete or reinforced concrete
    • E02D5/12—Locking forms; Edge joints; Pile crossings; Branch pieces
    • 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
    • E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads

Definitions

  • the present invention relates to a method for strengthening a piles wall and an equipment to implement the method.
  • the invention relates to the building of a strengthening structure such as a lining wall over a "wall" comprising a plurality of concrete piles separated by intervals.
  • the interval between two piles can consist of the remaining ground within which the piles have been made.
  • the interval can also consist of intermediate piles disposed between two main piles made of reinforced concrete.
  • the intermediate piles are made of a grout which is less hard than the reinforced concrete.
  • FIG 1 illustrates a piles wall provided with a lining wall.
  • Figure 1 shows the alignments A, B and C of concrete piles D.
  • the piles are obtained by drilling vertical boreholes within the ground, filling up the boreholes with concrete and disposing a reinforcement structure into the boreholes. Then the ground within the volume limited by the alignments of piles A, B, C and D is excavated. As a result, the intervals between the piles consist of the remaining soil or ground.
  • Such a piles wall is generally called a "contiguous bored piles wall" (C.B.P.W.).
  • S.P.W. Another type of piles wall called "secant piles wall” (S.P.W.) consists of an alternation of primary piles made of harder concrete and secondary piles made of softer material such as grout, the secondary piles being located between two primary piles.
  • a vertical lining wall LW is built over the pile wall.
  • the lining wall should be anchored within the pile wall. In some other cases, a lining wall is not necessary. It is sufficient to anchor strengthening sections such as a steel section between the piles. To achieve this anchoring, holes are drilled in the piles and anchoring members are inserted and fixed within these holes.
  • a first object of the present invention is to provide a method for strengthening a piles wall (C.B.P.W. or S.P.W.) which does not present the above-mentioned drawbacks.
  • the method for strengthening a wall comprising a plurality of piles made of concrete and separated by intervals consisting of less hard material said method comprises the steps of:
  • the anchoring members are firmly secured even though the material which forms the intervals between the piles is softer.
  • a second object of the present invention is to provide an equipment to implement the method of strengthening the piles walls (C.B.P.W. or S.P.W.).
  • the equipment for strengthening a wall comprising a plurality of piles made of concrete separated by intervals consisting of less hard material, the equipment comprises:
  • Figure 2 shows two contiguous bored piles 10 and 12 and the interval 14, consisting of remaining soil, between the two piles.
  • the piles are made of reinforced concrete and their diameter is from 300 to 2100 mm.
  • the length L of the interval 14 is from 50 to 300 mm, typically 150 mm.
  • anchoring members are inserted into the holes 16 and fixed within them.
  • the anchoring members consist of expansible bolts such as bolt 24. These bolts are generally called “Jeffer bolts”.
  • the bolt 24 comprises an expansible end 26 and a threaded head 28.
  • the threaded head 28 is the end of a stem 30 which is used to expand the bolt.
  • the threaded head 28 of the bolt is also used to fix an anchoring structure such as a mesh 32.
  • the portion of the mesh 32 surrounding the head 28 is secured to the bolt 24 by means of a nut 34 and a washer 36.
  • the end 26 of the bolt 24 is expanded in the enlarged portion 22 of the hole 16. So, the bolt 24 is firmly anchored in the material forming the interval 14 between the two piles 10 and 12 and the mesh 32 is fixed to the bolts 24.
  • the lining wall 38 can be built with any convenient material (please give examples of material).
  • the mesh 32 has a double function. Firstly, the mesh serves as an anchoring structure for anchoring the lining wall over the piles wall. Secondly, the mesh serves as a reinforcement for the lining wall itself.
  • the same building method can be implemented in the case of a secant piles wall.
  • the method for fixing the anchoring members e.g. Jeffer bolts
  • the reinforcing structure such as a mesh
  • steel sections or similar structures which are fixed or tied by means of the anchoring members.
  • the tool sections can extend over the whole piles wall or only over the intervals between the piles.
  • the drilling tool 18 is schematically shown in figure 5.
  • the tool comprises a stem 50 and a drilling head 52.
  • the stem 50 is provided with a flight 54 to remove the spoil.
  • the tool is provided with a pivoting blade 56.
  • the blade 56 has a first end 56a which is pivotally mounted on the stem and an intermediate portion 56b which is connected to a control arm 58.
  • the second end of the arm 58 is connected to an inner or outer control sleeve not shown in figure 5.
  • the arm 58 is moved and the blade 56 is pivoted about its end 56a. The pivoting of the blade 56 allows the performance of the enlarged portion 22 of the anchoring holes 16.
  • FIG. 6 shows a Jeffer bolt 24 which can be used as an anchoring member to implement the building method.
  • the bolt comprises a cylindrical body 60, the distal end 62 thereof being split to define two expansible wings 64 and 66.
  • a central stem 68 is slidably mounted within the body 60.
  • the stem 68 is provided with an expansion head 70 and a threaded end 72. When the stem is moved with respect to the body 60; by means of the nut 34 and the washer 36, the control head 70 produces the expansion of the wings 64 and 66.
  • the method and the equipment for building the lining wall has many advantages compared to the prior art techniques.
  • the building of the lining wall is easier and the lining wall has a higher mechanical strength. This is very important when the purpose of the lining wall is to resist the bending force developed by the soil between the piles and the pressure of the water contained in the soil.
  • the stem 68 of the bolt can be hollow to allow the injection of grout or similar material into the anchoring hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Piles And Underground Anchors (AREA)
EP04291663A 2003-07-17 2004-07-01 Méthode et équipement pour renforcer une paroi de pieux Withdrawn EP1498551A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0316750A GB2403977B (en) 2003-07-17 2003-07-17 A method of strengthening a piles wall and piles wall strengthening equipment
GB0316750 2003-07-17

Publications (1)

Publication Number Publication Date
EP1498551A1 true EP1498551A1 (fr) 2005-01-19

Family

ID=27764001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291663A Withdrawn EP1498551A1 (fr) 2003-07-17 2004-07-01 Méthode et équipement pour renforcer une paroi de pieux

Country Status (2)

Country Link
EP (1) EP1498551A1 (fr)
GB (1) GB2403977B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110670598A (zh) * 2019-07-24 2020-01-10 青岛理工大学 一种咬合桩施工冷缝处理结构及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779011A (en) * 1953-12-29 1957-07-17 Becorit Grubenausbau Gmbh Improvements in or relating to anchor support systems
US4362440A (en) * 1979-01-27 1982-12-07 Bergwerksverband Gmbh Tubular lost borehole closure
US4402639A (en) * 1980-03-19 1983-09-06 Hilti Aktiengesellschaft Anchor bolt
US4911583A (en) * 1984-06-21 1990-03-27 Schnabel Foundation Company Structure and method for shoring a face of an excavation
DE4100137A1 (de) * 1991-01-04 1992-07-16 Dyckerhoff & Widmann Ag Verfahren zum herstellen einer aus pfahlfoermigen elementen bestehenden dichtwand im boden
JPH059928A (ja) * 1991-07-03 1993-01-19 Railway Technical Res Inst 盛土のり面急勾配化工法
US6299386B1 (en) * 1999-06-09 2001-10-09 R. John Byrne Method and apparatus for a shoring wall

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934325A (ja) * 1982-08-19 1984-02-24 Shimizu Constr Co Ltd 杭列止水壁の構築工法及び装置
GB8514710D0 (en) * 1985-06-11 1985-07-10 Stent Foundations Ltd Retaining walls

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779011A (en) * 1953-12-29 1957-07-17 Becorit Grubenausbau Gmbh Improvements in or relating to anchor support systems
US4362440A (en) * 1979-01-27 1982-12-07 Bergwerksverband Gmbh Tubular lost borehole closure
US4402639A (en) * 1980-03-19 1983-09-06 Hilti Aktiengesellschaft Anchor bolt
US4911583A (en) * 1984-06-21 1990-03-27 Schnabel Foundation Company Structure and method for shoring a face of an excavation
DE4100137A1 (de) * 1991-01-04 1992-07-16 Dyckerhoff & Widmann Ag Verfahren zum herstellen einer aus pfahlfoermigen elementen bestehenden dichtwand im boden
JPH059928A (ja) * 1991-07-03 1993-01-19 Railway Technical Res Inst 盛土のり面急勾配化工法
US6299386B1 (en) * 1999-06-09 2001-10-09 R. John Byrne Method and apparatus for a shoring wall

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0172, no. 82 (M - 1420) 31 May 1993 (1993-05-31) *

Also Published As

Publication number Publication date
GB2403977A (en) 2005-01-19
GB0316750D0 (en) 2003-08-20
GB2403977B (en) 2006-10-11

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