WO1981002757A1 - Procede pour enlever la partie superieure d'un pilier de beton coule sur place - Google Patents

Procede pour enlever la partie superieure d'un pilier de beton coule sur place Download PDF

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Publication number
WO1981002757A1
WO1981002757A1 PCT/JP1981/000050 JP8100050W WO8102757A1 WO 1981002757 A1 WO1981002757 A1 WO 1981002757A1 JP 8100050 W JP8100050 W JP 8100050W WO 8102757 A1 WO8102757 A1 WO 8102757A1
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WO
WIPO (PCT)
Prior art keywords
concrete
pipe
cast
reinforcing bar
sealing
Prior art date
Application number
PCT/JP1981/000050
Other languages
English (en)
Japanese (ja)
Inventor
K Asakura
Original Assignee
K Asakura
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 K Asakura filed Critical K Asakura
Publication of WO1981002757A1 publication Critical patent/WO1981002757A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles

Definitions

  • the present invention relates to a method for removing an upper concrete portion of a cast-in-place pile.
  • cast-in-place piles are used when constructing various types of buildings.However, after concrete is put in place, small objects, such as benite or mud, rise in the upper part. Since the strength of the concrete part is weak, for example, it is necessary to remove the rebar by excavating it about 1 m from the upper end and construct the upper foundation from this part. It has been. The work of peeling off the upper concrete part causes noise pollution.]) A lot of dust is generated and the vibration may cause the worker to suffer from whitening. The disadvantage was that it was inefficient and costly. In addition, when the upper concrete part was removed, there was a drawback in that the reinforcing steel connected to the upper foundation was bent.
  • the inventor of the present invention has proposed a method disclosed in Japanese Patent Application Laid-Open No. 54-6 ⁇ 9210. In this method, a reinforcing cage is placed in an excavated hole and removed, and the reinforcing cage is buried in the upper concrete part.
  • the part is surrounded by a common surrounding member made of a flexible material having flexibility and is surrounded by a reinforcing steel cage after the concrete is cast and before the upper concrete part hardens.
  • the concrete destruction means D is used to crush and remove the upper concrete section.
  • JP-B-52-38896 a pressurized liquid is supplied to an inflatable container buried in the concrete to condense the concrete.
  • One object of the present invention is to eliminate the above-mentioned defect and to easily and surely prevent the upper concrete portion at the time of the place striking construction from being joined to the reinforcing bar, thereby preventing the upper concrete portion from being joined.
  • the present invention provides a method that can easily remove the upper concrete portion without shortening the rebar and shorten the lead time without bending the rebar.
  • Fig. 1 is a front view showing a state in which a sealing pipe and a pipe for breaking a bank are mounted on an upper part of a reinforcing bar in an embodiment of the present invention
  • Fig. 2 is a plan view thereof
  • Fig. 3 is a reinforcing bar.
  • Front view showing the sealing pipe fitted on the outside of the part to an enlarged scale with a partial cutout.
  • FIG. 6 is a front view showing a sealing pipe fitted to the outside of a reinforcing bar used in another embodiment of the present invention, which is partially cut away and enlarged
  • FIG. Fig. 8 is a plan view showing a breaking pipe used in another embodiment.
  • Fig. 8 shows a method of crushing the lower end of the upper concrete section in another embodiment of the present invention. It is a front view which shows partially notched.
  • This reinforcing bar cage is composed of a number of reinforcing bars 11 extending in the vertical direction and a plurality of annular fiber bars 12 connecting the respective reinforcing bars.
  • the upper concrete section 90 that is to be removed after the concrete is cast is suspended so that it does not include the lower part of the hoop streaks 12 •. 13 is from the upper end of each iron ⁇ 11
  • a sealing pipe fitted on the side, for example, a synthetic resin such as polyethylene), the upper part of which is closed]) and a lower end part made of rubber, etc. 1 5 Is installed.
  • the sealing member 15 has a pair of small-diameter portions 16 and engages with the projections 17 on the peripheral surface of the reinforcing bar 11 so that the sealing pipe has fluidity.
  • the buoyancy of the concrete prevents it from falling off, and also seals the liquid concrete so that it can flow into the interior.
  • a metal pipe can also be used as the sealing pipe 13.
  • 1 8 is a sealing pipe
  • OMPI It is located in the center of 10 to supply liquid concrete.
  • the reinforced cage 10 is directly or directly inserted into a hole (not shown) for constructing a place-in-place jig without mounting the sealing pipe 13 and the breaking pipe 18.
  • the operator enters the inside of the reinforcing steel basket 1.0]? Attach the sealing pipe 13 and the breaking pipe 18 and then reflow the concrete. May be supplied.
  • the sealing pipe 13 can be pushed down from above and fitted into the outside of the reinforcing bar 11. .-' ⁇
  • the soil around the upper concrete section 90 is excavated and removed, and the concrete is hit with a hammer or the like from the outside of each cap 23.
  • the cap 23 is destroyed by exposing the cap 23 and the small-diameter portion 21 is bent outward, and then the cap 23 is removed.
  • a hose (not shown) is connected to the diameter part 21 and a liquid such as water pressurized by a pump is supplied to evacuate the air, and then the other small diameter part 21 is closed and pressurized. If liquid continues to be supplied, pipe 18 will open and A force will be exerted in the direction of lifting the concrete part 90.o In this case, the upper concrete part is not connected to the upper concrete part 90 because the reinforcing bar 11 is not connected to the upper concrete part 90.
  • FIG. 5 shows a state in which a sealing pipe 13 used in another embodiment of the present invention extends in the vertical direction and is fitted outside the upper part of the reinforcing bar 1.
  • This pipe 1.3 is made of, for example, a spongy synthetic resin or a porous flexible elastic material such as sponge rubber, etc., so that each bubble is independent. Although more desirable, those which have air bubbles can be used.
  • Reference numeral 25 denotes a wire fastening portion for fastening the pipe 13 near its upper and lower ends to secure it to the reinforcing bar 11 and to seal it. 'If the sealing pipe 13 made of such a porous flexible material is used, it is in close contact with the reinforcing bar 11. Very little if it flows into tube 1 3
  • FIG. 6 shows a state in which a sealing pipe 13 used in another embodiment of the present invention is fitted outside the upper part of a reinforcing bar 11 extending vertically.
  • This pipe 13 is an outer pipe 26 made of a hard synthetic resin similar to that shown in Figs. 1 to 3 and placed inside this outer pipe to directly contact the reinforcing bar 11_. It has an inner tube 27 made of a porous flexible material similar to that shown in FIG.
  • the outer pipe 26 has an upper pipe closed at the upper end and '' is rubber at the lower end. ?? 3 ⁇ 4j? A sealing member 15 having a pair of small diameter sections 16 is attached.
  • the reinforcing rods 11 extending in the vertical direction of the reinforcing basket 10 are arranged in two layers, inside and outside. 6 You may use the durable sealing pipe 13 shown in Figure 13 and use the sealing ⁇ -ive 13 shown in Figure 5 for the outer reinforcing bar 11 o
  • FIG. 7 shows a flat metal breaking pipe 18 used in another embodiment of the present invention, which is completely annular.
  • a flat crushing pipe 18 is not used, and a suitable space is provided horizontally at the lower end of the upper concrete section 90 as shown in FIG. Drill a plurality of holes 9 7, for example, by driving a tool 9 ′ 8 in the shape of a cone, etc.].
  • a tool 9 ′ 8 in the shape of a cone, etc.
  • raise the upper concrete portion 90. Can be removed.
  • the upper concrete section 9.0 was destroyed in the horizontal direction at an appropriate height from the top at an appropriate height, and the upper concrete section above the part where the parentheses were broken
  • the removal of the portion 90 by raising it may be repeated ⁇ a plurality of times to remove the entire upper concrete portion 90 ⁇ ⁇ ⁇

Landscapes

  • Engineering & Computer Science (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)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

Procede pour enlever une partie superieure du beton d'un pilier en beton coule sur place. Avant de former la partie superieure de beton, des tubes scelles sont places autour de chaque tige de renforcement d'acier (11) de la cage de renforcement (10) s'etendant verticalement vers le haut; les tubes sont bouches de maniere a ce qu'ils ne flottent pas lorsqu'on coule le beton liquide et pour que le beton liquide ne s'ecoule pas a l'interieur. Un tube metallique circulaire sensiblement plat (18) pour casser le beton est attache a la cage de renforcement (10) et noye dans le beton dans la region situee entre la partie superieure (90) et la partie inferieure (91) qui ne doit pas etre enlevee. Une fois la coulee terminee, et apres que le beton ait durci, du fluide est injecte a une pression croissante a l'interieur du tube de destruction (18) pour en detacher la region. La partie superieure peut alors etre soulevee et enlevee.
PCT/JP1981/000050 1980-03-17 1981-03-10 Procede pour enlever la partie superieure d'un pilier de beton coule sur place WO1981002757A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP80/32701 1980-03-17
JP3270180A JPS56131712A (en) 1980-03-17 1980-03-17 Removing method of defective concrete at upper part of pile when driving pile in site

Publications (1)

Publication Number Publication Date
WO1981002757A1 true WO1981002757A1 (fr) 1981-10-01

Family

ID=12366146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1981/000050 WO1981002757A1 (fr) 1980-03-17 1981-03-10 Procede pour enlever la partie superieure d'un pilier de beton coule sur place

Country Status (2)

Country Link
JP (1) JPS56131712A (fr)
WO (1) WO1981002757A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307504A (en) * 1996-03-22 1997-05-28 Robert Arthur Merritt Method of breaking concrete piles
GB2382096A (en) * 2001-11-27 2003-05-21 Robert Arthur Merritt Debonding sheath for piles
BE1014689A3 (nl) * 2002-03-08 2004-03-02 Kempeneers Guy Werkwijze voor het vervaardigen van een fundering of een grondkering.
GB2398333A (en) * 2003-02-07 2004-08-18 Cementation Found Skanska Ltd Techniques for pile breaking
ES2214107A1 (es) * 2002-08-06 2004-09-01 Terratest Tecnicas Especiales, S.A. Sistema de descabezado de pilotes y elementos de pantalla.
GB2413350A (en) * 2004-04-14 2005-10-26 Laing O Rourke Plc Hydraulic Pile Cap Removal
CN108824431A (zh) * 2018-07-17 2018-11-16 中冶建工集团有限公司 超灌桩头处理施工方法
CN114875912A (zh) * 2022-05-29 2022-08-09 中国五冶集团有限公司 一种液压式破桩头的钢筋保护方法
CN114875931A (zh) * 2022-06-08 2022-08-09 中铁七局集团郑州工程有限公司 围护结构、围护结构的施工方法及拆除方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59192124A (ja) * 1983-04-13 1984-10-31 Tobishima Kensetsu Kk 杭頭処理工法とそれに使用する多重管
JPS59224723A (ja) * 1983-06-02 1984-12-17 Taisei Corp コンクリ−トの破砕切断方法
JPS6058639U (ja) * 1983-09-26 1985-04-24 積水樹脂株式会社 場所打ちコンクリ−ト杭の杭頭処理装置
DE3343961A1 (de) * 1983-12-06 1985-06-20 Gkn Keller Gmbh, 6050 Offenbach Verfahren zum herstellen von pfaehlen oder pfahlartigen koerpern
JPS60144467A (ja) * 1983-12-29 1985-07-30 太平洋セメント株式会社 膨張性物質によるコンクリ−ト構造物の破壊方法
JP6475553B2 (ja) * 2015-04-15 2019-02-27 戸田建設株式会社 杭頭処理工法と凍結破砕管
CN107604920A (zh) * 2017-09-14 2018-01-19 云南建投第五建设有限公司 一种快速破除灌注桩桩头的施工方法
CN111424664A (zh) * 2020-04-17 2020-07-17 中铁九局集团第七工程有限公司 预断裂钻孔桩桩头去除施工工法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114205A (fr) * 1973-03-07 1974-10-31
JPS5336911A (en) * 1976-09-17 1978-04-05 Taisei Corp Method of cutting head of casttin place reinforced concrete pile
JPS5346113A (en) * 1976-10-08 1978-04-25 Akinori Ishii Method of chipping foundation pile
JPS5460707A (en) * 1977-10-25 1979-05-16 Takenaka Komuten Co Method of disassembling pile head in casttinnplace concrete pile
JPS5481608A (en) * 1977-12-12 1979-06-29 Furukawa Electric Co Ltd Method of crushing concrete of location piled pile head portion
JPS5491907A (en) * 1977-12-28 1979-07-20 Mitsui Constr Method of removing top of stake driven on spot

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54129707A (en) * 1978-03-31 1979-10-08 Furukawa Electric Co Ltd Overhaul method of concrete of head portion of pile that show location

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49114205A (fr) * 1973-03-07 1974-10-31
JPS5336911A (en) * 1976-09-17 1978-04-05 Taisei Corp Method of cutting head of casttin place reinforced concrete pile
JPS5346113A (en) * 1976-10-08 1978-04-25 Akinori Ishii Method of chipping foundation pile
JPS5460707A (en) * 1977-10-25 1979-05-16 Takenaka Komuten Co Method of disassembling pile head in casttinnplace concrete pile
JPS5481608A (en) * 1977-12-12 1979-06-29 Furukawa Electric Co Ltd Method of crushing concrete of location piled pile head portion
JPS5491907A (en) * 1977-12-28 1979-07-20 Mitsui Constr Method of removing top of stake driven on spot

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997036058A1 (fr) * 1996-03-22 1997-10-02 Robert Arthur Merritt Procede pour casser les pieux en beton
GB2307504B (en) * 1996-03-22 1998-05-20 Robert Arthur Merritt Method of breaking concrete piles
GB2307504A (en) * 1996-03-22 1997-05-28 Robert Arthur Merritt Method of breaking concrete piles
GB2382096A (en) * 2001-11-27 2003-05-21 Robert Arthur Merritt Debonding sheath for piles
GB2382096B (en) * 2001-11-27 2003-10-29 Robert Arthur Merritt Breaking/dressing of piles
BE1014689A3 (nl) * 2002-03-08 2004-03-02 Kempeneers Guy Werkwijze voor het vervaardigen van een fundering of een grondkering.
ES2214107A1 (es) * 2002-08-06 2004-09-01 Terratest Tecnicas Especiales, S.A. Sistema de descabezado de pilotes y elementos de pantalla.
GB2398333A (en) * 2003-02-07 2004-08-18 Cementation Found Skanska Ltd Techniques for pile breaking
GB2413350A (en) * 2004-04-14 2005-10-26 Laing O Rourke Plc Hydraulic Pile Cap Removal
WO2005100698A1 (fr) * 2004-04-14 2005-10-27 Laing O'rourke Plc Retrait de semelle sur pieu hydraulique
GB2413350B (en) * 2004-04-14 2006-04-05 Laing O Rourke Plc Hydraulic pile cap removal
CN108824431A (zh) * 2018-07-17 2018-11-16 中冶建工集团有限公司 超灌桩头处理施工方法
CN114875912A (zh) * 2022-05-29 2022-08-09 中国五冶集团有限公司 一种液压式破桩头的钢筋保护方法
CN114875931A (zh) * 2022-06-08 2022-08-09 中铁七局集团郑州工程有限公司 围护结构、围护结构的施工方法及拆除方法

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Publication number Publication date
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