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EP0794296A1 - Structure de support pour cage d'armature d'un pieu en béton - Google Patents

Structure de support pour cage d'armature d'un pieu en béton Download PDF

Info

Publication number
EP0794296A1
EP0794296A1 EP97103160A EP97103160A EP0794296A1 EP 0794296 A1 EP0794296 A1 EP 0794296A1 EP 97103160 A EP97103160 A EP 97103160A EP 97103160 A EP97103160 A EP 97103160A EP 0794296 A1 EP0794296 A1 EP 0794296A1
Authority
EP
European Patent Office
Prior art keywords
collar
clamping
cage
reinforcing
reinforcing bar
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Withdrawn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
EP97103160A
Other languages
German (de)
English (en)
Inventor
Stephen Render
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.)
Gray Engineering Ltd
Original Assignee
Gray Engineering Ltd
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 Gray Engineering Ltd filed Critical Gray Engineering Ltd
Publication of EP0794296A1 publication Critical patent/EP0794296A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/208—Spacers especially adapted for cylindrical reinforcing cages
    • 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
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod

Definitions

  • This invention relates to a support structure for use in a cage for reinforcing a concrete pile, the support structure maintaining a plurality of reinforcing bars extending in the longitudinal direction of the cage and pile in spaced relation to one another.
  • a support structure is commonly called a collar, which term will be used herein for convenience.
  • a collar for a pile-reinforcing cage is disclosed in our published European patent application EP-0608068-A1.
  • That collar comprises two spaced-apart superimposed transverse frames which in use are secured to the longitudinally extending reinforcing bars of the cage, and metal rods extending longitudinally between the two transverse frames, at least three of the rods extending between the frames having radially outwardly off-set guide portions which lie outside the volume bounded by the frames and which are corrosion resistant.
  • the guide portions serve to locate the collar within the concrete so that an adequate thickness of concrete surrounds all parts of the collar and thus the cage.
  • Pile-reinforcement cages usually are assembled on site, each cage being assembled from two collars and an appropriate number of separate longitudinal reinforcing bars. While some of the bars of the cage need only to be connected to the collars by ties which serve to hold them in place until concrete is poured around the cage to form a pile, it is necessary for two or more of the bars to be connected to each collar by a stronger method. This is to enable the cage to be handled, and in particular lifted, as a strong substantially rigid unit.
  • Bars have been connected to collars for this purpose by fasteners, each comprising a U-bolt which embraces the reinforcing bar and a part of the collar, a bridging piece being fitted on the two free ends of the limbs of the U-bolt and tightened by nuts on threaded end portions of such limbs.
  • fasteners each comprising a U-bolt which embraces the reinforcing bar and a part of the collar, a bridging piece being fitted on the two free ends of the limbs of the U-bolt and tightened by nuts on threaded end portions of such limbs.
  • a collar for use in a cage for reinforcing a concrete pile comprising transverse frame means and clamping means fixed to the transverse frame means and adapted to engage at least one reinforcing bar extending longitudinally of the cage to secure said at least one reinforcing bar to the collar.
  • the clamping means comprises a respective clamping device for engaging each reinforcing bar required to be secured to the collar.
  • a respective clamping device for engaging each reinforcing bar required to be secured to the collar.
  • each clamping device comprises a base portion fixed to the transverse frame means of the collar and a clamping portion defining with the base portion a formation in which a reinforcing bar can be received, and able to be moved relative to the base portion by a fastening means to clamp the reinforcing bar in said formation.
  • the clamping portion is pivotable relative to the base portion, and conveniently such a clamping device is of the type commonly referred to as a scaffolding clamp and well known for use in securing scaffolding components together.
  • the collar is of the type disclosed in our European published patent application aforesaid, comprising two spaced superimposed transverse frames and a plurality of support rods extending therebetween, at least three of such rods having radially outwardly offset guide portions lying outside the volume bounded by the frame.
  • the support rods may have sections which extend alongside the two transverse frames and are line welded thereto, as disclosed in our published European patent application 0756049-A1.
  • the two spaced apart transverse frames may be connected to one another by support plates extending between the frames, each support plate having edges which are line welded to the respective frames.
  • a cage for reinforcing a concrete pile comprising two collars in accordance with the first aspect of the invention and a plurality of reinforcing bars extending therebetween, at least one of such reinforcing bars being connected to the collars by the clamping means on the collars.
  • a collar for use in a cage for reinforcing a concrete pile comprises two transverse frames indicated generally at 10, 11, each being in the form of a ring.
  • the frame 10 comprises a relatively long length of steel bar such as a concrete reinforcing bar coiled into a tight helix, while the frame 11 is similarly constructed but from a shorter length of bar such that the free ends of the length of bar overlap for a part only of the circumference of the frame.
  • concrete reinforcing bar has a surface configured to grip concrete in which it is embedded.
  • the frames 10, 11 are secured to one another in superposed relationship as illustrated by four supporting bars indicated generally at 12, 13, 14, 15 extending therebetween and welded thereto.
  • Each of the supporting bars 12 to 15 is made of steel bar somewhat thinner than that used for the frames 10, 11, bent into the illustrated elongate shape with generally parallel portions and generally semi-circular end portions, the latter being line welded to the frames 10, 11.
  • spacer bars 16, 17, 18, 19 which are welded to the frames and each of which has, as shown for the spacer bar 19, a centre region 20 which is bent out of the volume bounded by the frames 10, 11 and the supporting bars 12 to 15.
  • the centre regions as 20 of the spacer bars act to space the collar, and thus the cage including the collar, from the walls of a cavity into which concrete is poured to form a pile. Because the regions 20 of the spacer bars might be partly exposed on the surface of the concrete after it is set, such regions are protected against corrosion by being sheathed in a plastics sleeve as indicated at 21, or otherwise.
  • the frame 10 is provided with two diametrically opposed clamping devices 25, 26.
  • the clamping device 25 comprises a base portion 27 which is welded to the frame 10 and a clamping portion 28 which is pivotably attached to the base portion 27.
  • the portions 27, 28 define opposed halves of a formation able to receive a reinforcement bar indicated in outline at 29.
  • the clamping portion 28 is able to be drawn towards the base portion 27 by a nut 30 on a bolt 31 which is held captive to the base portion 27, tightening of the nut 30 in abutment with the clamping portion 28 causing the latter firmly to clamp the reinforcing bar 29 to hold it to the collar.
  • the clamping device 26 is of the same construction as the clamping device 27, and it will be appreciated that such clamping devices are of a configuration and mode of operation which is generally known in clamping devices for use in scaffolding structures. Scaffolding clamps themselves may be utilised.
  • a concrete pile-reinforcement cage is shown in Figure 2 of the drawings.
  • the cage comprises two collars 41, 42 each of which is as described above, spaced from one another.
  • the collar 41 will be the top collar of the cage when in use in a pile, and its frame having the clamping devices is lowermost.
  • a plurality of reinforcing bars extend between and beyond the collars and a diametrically opposed pair 43, 44 of such reinforcing bars are held by the clamping devices of the two collars.
  • the other reinforcing bars are held to the collars by other means such as metal ties or the like, or possibly separate fastening devices of the U-bolt type as hereinbefore referred to.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
EP97103160A 1996-03-09 1997-02-26 Structure de support pour cage d'armature d'un pieu en béton Withdrawn EP0794296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9605022 1996-03-09
GB9605022A GB2310875B (en) 1996-03-09 1996-03-09 Support structure for a cage for reinforcing a concrete pile

Publications (1)

Publication Number Publication Date
EP0794296A1 true EP0794296A1 (fr) 1997-09-10

Family

ID=10790129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103160A Withdrawn EP0794296A1 (fr) 1996-03-09 1997-02-26 Structure de support pour cage d'armature d'un pieu en béton

Country Status (6)

Country Link
EP (1) EP0794296A1 (fr)
CZ (1) CZ62497A3 (fr)
GB (1) GB2310875B (fr)
HU (1) HUP9700560A3 (fr)
PL (1) PL318847A1 (fr)
ZA (1) ZA971520B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2363813A (en) * 2000-05-18 2002-01-09 Rom Group Ltd Bar end boot for a cage bar
JP2012162855A (ja) * 2011-02-03 2012-08-30 Asahi Kasei Construction Materials Co Ltd スペーサ
EP2674542A1 (fr) 2012-06-13 2013-12-18 Peab Grundläggning AB Élément en béton armé comprenant des fibres d'acier et étant pourvu d'un espaceur en plastique
JP2017166264A (ja) * 2016-03-17 2017-09-21 株式会社大林組 スペーサ及び鉄筋籠の構築方法
CN107503353A (zh) * 2017-10-10 2017-12-22 山东省路桥集团有限公司 桩基钢筋笼偏位和倾斜预防装置及方法
CN110644477A (zh) * 2019-10-19 2020-01-03 深圳市中荣煜建筑工程有限公司 一种钢管式振动插筋器
CN117248520A (zh) * 2023-08-23 2023-12-19 广东聚源建设集团有限公司 灌注桩钢筋笼快速定位的辅助装置
USD1046603S1 (en) 2023-01-13 2024-10-15 Rebar Support Products, Inc. Rebar support

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9901746D0 (en) 1999-01-27 1999-03-17 Rom Limited Cage former and clamp therefor
GB9908509D0 (en) * 1999-04-15 1999-06-09 Rom Limited Cage former
GB0011839D0 (en) 2000-05-18 2000-07-05 Rom Group Limited Ladder spacer for a pile cage
AU2002229408B2 (en) * 2001-02-09 2005-06-30 Cagemaker Equipment Pty Ltd A former associated with an apparatus for making cages
AUPR300301A0 (en) * 2001-02-09 2001-03-08 Cagemaker Equipment Pty Ltd A former associated with an apparatus for making cages

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR658897A (fr) * 1927-08-13 1929-06-21 Perfectionnements aux colonnes ou poutres creuses
DE8000422U1 (de) * 1980-01-09 1983-06-23 Landshuter Baueisenbiegerei GmbH, 8300 Altdorf Armierungskorb fuer grossbohrpfaehle
GB2235223A (en) * 1989-07-10 1991-02-27 Bachy Reinforced concrete piles
EP0608068A1 (fr) * 1993-01-16 1994-07-27 Gray Engineering Limited Cage d'armature d'un pieu en béton

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463538A (en) * 1982-01-21 1984-08-07 Dragunas Alfred R Reinforcing network for concrete structure
GB2303648B (en) * 1995-07-25 1999-01-27 Gray Eng Ltd Collar for a concrete reinforcement cage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR658897A (fr) * 1927-08-13 1929-06-21 Perfectionnements aux colonnes ou poutres creuses
DE8000422U1 (de) * 1980-01-09 1983-06-23 Landshuter Baueisenbiegerei GmbH, 8300 Altdorf Armierungskorb fuer grossbohrpfaehle
GB2235223A (en) * 1989-07-10 1991-02-27 Bachy Reinforced concrete piles
EP0608068A1 (fr) * 1993-01-16 1994-07-27 Gray Engineering Limited Cage d'armature d'un pieu en béton

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2363813A (en) * 2000-05-18 2002-01-09 Rom Group Ltd Bar end boot for a cage bar
JP2012162855A (ja) * 2011-02-03 2012-08-30 Asahi Kasei Construction Materials Co Ltd スペーサ
EP2674542A1 (fr) 2012-06-13 2013-12-18 Peab Grundläggning AB Élément en béton armé comprenant des fibres d'acier et étant pourvu d'un espaceur en plastique
EP2674541A1 (fr) * 2012-06-13 2013-12-18 Peab Grundläggning AB Espaceur pour une utilisation dans l'élément en béton armé et procédé de production d'une structure de renforcement
JP2017166264A (ja) * 2016-03-17 2017-09-21 株式会社大林組 スペーサ及び鉄筋籠の構築方法
CN107503353A (zh) * 2017-10-10 2017-12-22 山东省路桥集团有限公司 桩基钢筋笼偏位和倾斜预防装置及方法
CN110644477A (zh) * 2019-10-19 2020-01-03 深圳市中荣煜建筑工程有限公司 一种钢管式振动插筋器
USD1046603S1 (en) 2023-01-13 2024-10-15 Rebar Support Products, Inc. Rebar support
CN117248520A (zh) * 2023-08-23 2023-12-19 广东聚源建设集团有限公司 灌注桩钢筋笼快速定位的辅助装置
CN117248520B (zh) * 2023-08-23 2024-04-02 广东聚源建设集团有限公司 灌注桩钢筋笼快速定位的辅助装置

Also Published As

Publication number Publication date
GB2310875A (en) 1997-09-10
ZA971520B (en) 1997-11-28
HUP9700560A3 (en) 1999-12-28
GB9605022D0 (en) 1996-05-08
PL318847A1 (en) 1997-09-15
HU9700560D0 (en) 1997-04-28
HUP9700560A2 (hu) 1999-05-28
CZ62497A3 (en) 1997-09-17
GB2310875B (en) 2000-02-09

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