CN108589727A - The construction method of bored concrete pile broken pile head - Google Patents

The construction method of bored concrete pile broken pile head Download PDF

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Publication number
CN108589727A
CN108589727A CN201810392637.8A CN201810392637A CN108589727A CN 108589727 A CN108589727 A CN 108589727A CN 201810392637 A CN201810392637 A CN 201810392637A CN 108589727 A CN108589727 A CN 108589727A
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CN
China
Prior art keywords
pile
reinforcing bar
pile crown
crown
construction
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.)
Pending
Application number
CN201810392637.8A
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Chinese (zh)
Inventor
陈新喜
黄沛林
陈华
田惠文
范怀伟
武斌
刘雨
刘丹
沈健
李赟
郭志鑫
吴光辉
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.)
China Construction Eighth Engineering Division Co Ltd
Original Assignee
China Construction Eighth Engineering Division Co 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 China Construction Eighth Engineering Division Co Ltd filed Critical China Construction Eighth Engineering Division Co Ltd
Priority to CN201810392637.8A priority Critical patent/CN108589727A/en
Publication of CN108589727A publication Critical patent/CN108589727A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/005Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles

Abstract

The present invention relates to a kind of construction methods of bored concrete pile broken pile head, include the following steps:Mark line is drawn in the position of corresponding design stake top on the bored concrete pile constructed, and the part more than mark line is pile crown to be abolished;Circumferential cutting is carried out along the mark line and forms horizontal circumferential joint-cutting, is stayed between the reinforcing bar in the inward flange and the pile crown of the circumferential direction joint-cutting at regular intervals;The reinforcing bar and sound detecting pipe in the pile crown are stripped out using pneumatic pick;It is dug to the inside of the pile crown into the pile crown to be separated from root with the pile body of the bored concrete pile using pneumatic pick at the design stake top;And hang out the pile crown.The construction method of the present invention can protect the integrality of reinforcing bar; and only need to cut fraction concrete, remaining pile crown is directly cut off pile crown from the root of pile crown using pneumatic pick, to hang out pile crown; it is fast with construction speed, the good advantage of anchor bar finished product protection at pile crown.

Description

The construction method of bored concrete pile broken pile head
Technical field
The present invention relates to foundation pit construction engineering fields, refer in particular to a kind of construction method of bored concrete pile broken pile head.
Background technology
Cast-in-situ bored pile pile crown cut be pile foundation engineering an important process, be directly related to pile quality and finally check and accept And site operation progress.
Traditional pile crown cuts method, from the top down of pile crown directly by the concrete disintegrating of pile crown part, and in this way Method construction speed it is slow, and anchor bar at pile crown is easy to cause the vertical muscle anchorage length of engineering pile inadequate by chisel is disconnected.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of construction method of bored concrete pile broken pile head is provided, is solved Certainly existing pile crown cuts that construction speed existing for method is slow, is easy chisel and breaks anchor bar and causes anchor bar length inadequate Problem.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of construction methods of bored concrete pile broken pile head, include the following steps:
Mark line, the part more than mark line are drawn in the position of corresponding design stake top on the bored concrete pile constructed For pile crown to be abolished;
Carry out circumferential cutting along the mark line and form horizontal circumferential joint-cutting, the inward flange of the circumferential direction joint-cutting with It is stayed between reinforcing bar in the pile crown at regular intervals;
The reinforcing bar and sound detecting pipe in the pile crown are stripped out using pneumatic pick;
At the design stake top using pneumatic pick to the inside of the pile crown dig by the pile crown from root and institute State the pile body phase separation of bored concrete pile;And
Hang out the pile crown.
The construction method of the present invention forms smooth cut surface using annular joint-cutting at the top of bored concrete pile pile body so that After abolishing pile crown, the upper flat of bored concrete pile pile body, good forming effect.The circumferential direction joint-cutting is provided as mark line to strip out operation Reference plane, the reinforcing bar in pile crown stripped out using pneumatic pick, can protect the integrality of reinforcing bar, and only need to cut fraction coagulation Soil, remaining pile crown is directly cut off pile crown from the root of pile crown using pneumatic pick, to hang out pile crown.Construction method tool of the present invention There is construction speed fast, the good advantage of anchor bar finished product protection at pile crown.
The construction method of bored concrete pile broken pile head of the present invention further improvement lies in that, stripped out in the pile crown using pneumatic pick Reinforcing bar, including:
Cut the concrete cover on the circumferential joint-cutting and on the outside of the reinforcing bar;
The concrete parts for wrapping up the reinforcing bar top are cut to expose the top of the reinforcing bar;
It cuts and wraps up remaining concrete parts of the reinforcing bar all to leak out the reinforcing bar in the pile crown.
The construction method of bored concrete pile broken pile head of the present invention further improvement lies in that, stripped out in the pile crown using pneumatic pick Sound detecting pipe, including:
After stripping out the reinforcing bar, using pneumatic pick from the bottom of the reinforcing bar to the inside of the pile crown dig into, until At chisel to the position of the sound detecting pipe, and expose by the concrete chisel for wrapping up the sound detecting pipe divided by by the sound detecting pipe.
The construction method of bored concrete pile broken pile head of the present invention further improvement lies in that, stripped out in the pile crown using pneumatic pick Before reinforcing bar and sound detecting pipe, further include:
The places 20cm carry out circumferential cutting and are formed to identify to stitch above the circumferential joint-cutting.
The construction method of bored concrete pile broken pile head of the present invention further improvement lies in that, using electric slicer to the perfusion Stake carries out circumferential cutting.
The construction method of bored concrete pile broken pile head of the present invention further improvement lies in that, using pneumatic pick to the pile crown Inside is dug during, by the bore bit of the pneumatic pick in horizontal direction or the direction that tilts upward dig into.
Description of the drawings
Fig. 1 be bored concrete pile broken pile head of the present invention construction method in bored concrete pile top side perspective view.
Fig. 2 is the structural schematic diagram that structure cuts concrete cover shown in Fig. 1.
Fig. 3 is that structure shown in Fig. 2 cuts the structural schematic diagram that reinforcing bar top concrete is wrapped up on pile crown.
Fig. 4 is the structural schematic diagram that structure shown in Fig. 3 cuts remaining concrete that reinforcing bar is wrapped up on pile crown.
Fig. 5 is the structural schematic diagram for the concrete that package sound detecting pipe is cut in structure shown in Fig. 4.
Fig. 6 is the structural schematic diagram that pile crown is separated from root and pile body and is sling pile crown in structure shown in Fig. 5.
Fig. 7 is the flow chart of the construction method of bored concrete pile broken pile head of the present invention.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
Refering to Fig. 7, the present invention provides a kind of construction methods of bored concrete pile broken pile head, for solving traditional pile crown side of cutting Slowly anchor bar is easy to disconnect the problem for causing the vertical muscle anchorage length of engineering pile inadequate construction speed existing for method and at pile crown.This The construction method of invention has construction speed fast, the advantage that finished product protection is met the requirements and pile crown molding effect is good.With reference to Attached drawing illustrates the construction method of bored concrete pile broken pile head of the present invention.
Two reinforcing bars 24 are only shown in Fig. 1 to Fig. 6 of the present invention as signal, in fact, being provided in bored concrete pile 20 One circle reinforcing bar 24, the reinforcing bar 24 are the vertical muscle in bored concrete pile 20.
Refering to Fig. 7, it is shown that the flow chart of the construction method of bored concrete pile broken pile head of the present invention.With reference to Fig. 7, to this hair The construction method of bright bored concrete pile broken pile head illustrates.
As shown in fig. 7, the construction method of the bored concrete pile broken pile head of the present invention includes the following steps:
Step S101 is executed, mark line is drawn in the position of the design stake top of bored concrete pile:In conjunction with shown in Fig. 1, in having constructed The position of corresponding design stake top A1 draws mark line on good bored concrete pile 20, and part more than mark line is pile crown to be abolished 21.When bored concrete pile 20 is constructed, can top carry out it is superfilled to absolute altitude A2 locate, thus bored concrete pile 20 pile body 22 top shape At design stake top A1 to the pile crown 21 between absolute altitude A2, there is the reinforcing bar 24 that part is stretched out from pile body 22 in the pile crown 21, it should Reinforcing bar 24 is after pile crown 21 is abolished, the structure for connecting subsequent construction, and the structure of the subsequent construction and pile body 22 is firm It links together.Then step S102 is executed.
Step S102 is executed, carrying out circumferential cutting along mark line forms circumferential joint-cutting:Circumferential cutting shape is carried out along mark line At horizontal circumferential joint-cutting 23, stayed between the reinforcing bar 24 in the inward flange and pile crown 21 of circumferential joint-cutting 23 at regular intervals;Into When row circumferential direction cutting, it should be ensured that the circumferential joint-cutting 23 of formation is cut in level, so that after pile crown 21 is abolished, in conjunction with Fig. 2 institutes Show, the top of pile body 22 forms smooth cut surface 221, which is located at the edge of 22 top end face of pile body, the side One section of smooth cut surface on edge makes the good forming effect of 22 top end face of pile body.The depth of circumferential direction cutting is less than 24 outside of reinforcing bar Concrete cover thickness, preferably, the circumferential direction cutting depth be 5 to 8cm.Then step S103 is executed.
Step S103 is executed, the reinforcing bar and sound detecting pipe in pile crown are stripped out using pneumatic pick:In conjunction with shown in Fig. 5, shelled using pneumatic pick Go out the reinforcing bar 24 and sound detecting pipe 25 in pile crown, by pile crown reinforcing bar 24 and mutually shell with sound detecting pipe 25 and the concrete of pile crown 21 From, the effective protection integrality of reinforcing bar 24 and sound detecting pipe 25, solves the problems, such as anchor bar destructible in existing way.It connects Execution step S104.
Step S104 is executed, pile crown is separated from root with the pile body of bored concrete pile:In conjunction with shown in Fig. 6, in design stake It is dug to the inside of pile crown 21 into pile crown 21 to be separated from root with the pile body of bored concrete pile 20 22 using pneumatic pick at the A1 of top.It connects Execution step S105.
Step S105 is executed, pile crown is hung out.
The construction method of the present invention forms smooth cut surface using annular joint-cutting at the top of bored concrete pile pile body so that After abolishing pile crown, the upper flat of bored concrete pile pile body, good forming effect.The circumferential direction joint-cutting is provided as mark line to strip out operation Reference plane, the reinforcing bar in pile crown stripped out using pneumatic pick, can protect the integrality of reinforcing bar, and only need to cut fraction coagulation Soil, remaining pile crown is directly cut off pile crown from the root of pile crown using pneumatic pick, to hang out pile crown.Construction method tool of the present invention There is construction speed fast, the good advantage of anchor bar finished product protection at pile crown.
As the better embodiment of the present invention, the reinforcing bar in pile crown is stripped out using pneumatic pick, including:
As shown in Fig. 2, cutting the concrete cover on circumferential joint-cutting 23 and on the outside of reinforcing bar 24;The concrete cut is protected Sheath is corresponded to positioned at the outside of reinforcing bar 24, and cuts the top that part is slightly above reinforcing bar 24;
In conjunction with shown in Fig. 3, the concrete parts on 24 top of package reinforcing bar are cut to expose the top of reinforcing bar 24;Utilize pneumatic pick It cuts concrete cover in back and is formed by face to the direction where reinforcing bar 24 and dig into from top to bottom will be on reinforcing bar 24 Portion strips out;
In conjunction with shown in Fig. 4, remaining concrete parts of package reinforcing bar 24 are cut so that the reinforcing bar 24 in pile crown 21 is whole It leaks out.
When stripping out reinforcing bar 24, concrete is cut using sequence layering from outside to inside, from top to bottom, it being capable of effective protection The integrality of reinforcing bar 24 avoids the destruction to reinforcing bar 24.First the protective layer in outside is cut, since the top of reinforcing bar 24 has outward The bending segment of bending, so that pile crown 21 is soon exposed in the end of the bending segment, in the position of 24 elevation of top of reinforcing bar The place of setting carries out the end that soft peening can expose the bending segment of reinforcing bar 24, and then can be mixed what 24 surrounding of reinforcing bar was wrapped up along reinforcing bar 24 Solidifying soil is cut, when cutting the concrete wrapped up around reinforcing bar 24, the concrete chisel removal for first wrapping up top, then cut lower part packet The concrete wrapped up in, cut lower part package concrete when, pays attention to pneumatic pick bore bit dig into depth can not too deeply, avoid to sound detecting pipe Cut destruction.
Further, the sound detecting pipe in pile crown is stripped out using pneumatic pick, including:
After stripping out reinforcing bar 24, dug to the inside of pile crown 21 into until chisel arrives sound from the bottom of reinforcing bar 24 using pneumatic pick At the position of test tube 25, and expose by the concrete chisel for wrapping up sound detecting pipe 25 divided by by sound detecting pipe 25.
Still further, before stripping out reinforcing bar and sound detecting pipe in pile crown using pneumatic pick, further include:
In conjunction with shown in Fig. 1, carrying out circumferential cutting at 20cm above the circumferential joint-cutting 23 forms mark seam 26.It is stitched using mark The elevation of top of 26 mark sound detecting pipes 25, the elevation of top for being generally embedded in the sound detecting pipe 25 in bored concrete pile 20 are located at design stake top A1 or more 20cm or so.The position that the probably place of sound detecting pipe 25 is marked by identifying seam 26, cuts the coagulation of package reinforcing bar 24 When native, first by the concrete chisel removal on mark seam 26, then by the concrete chisel removal under mark seam 26, so as to operate The approximate location for knowing sound detecting pipe 25 in the process realizes the protection to sound detecting pipe 25.
Circumferential joint-cutting 23 and mark seam 23 are all made of electric slicer and carry out circumferential cutting to bored concrete pile 20.When cutting, really The cutter for protecting electric slicer are horizontal, and the depth of cut of circumferential joint-cutting 23 and mark seam 23 is 5 to 8cm.
As the present invention another better embodiment, using pneumatic pick to the inside of pile crown dig into during, by wind The bore bit of pick in horizontal direction or the direction that tilts upward dug into.So that air hose digs 21 bottom of pile crown of bored concrete pile 20 Into in the process, the chisel that pile body 22 and pile crown 21 to bored concrete pile 20 apply, without downward component, avoids applying pile body 22 into power Downward component plays protective effect to bored concrete pile 20.Pneumatic pick bore bit to dig inside pile crown 21 into when, each bore bit chisel Into depth be not easy it is too deep, avoid digging it is excessive into the plane of fracture and the angle of 22 top surface of pile body of formation, using pneumatic pick by pile crown 21 Root cut-out, and then hang out pile crown 21 is whole, concrete quarrel cleared out of into foundation pit, hole bottom equating compacting to bed course bottom later Absolute altitude, foundation pit surrounding dig gutter and catch pit.
Construction method of the present invention has the beneficial effect that:
Construction speed is fast, only needs to cut sub-fraction concrete in cutting operation, pile crown can bulk cut-out hang out;
Anchor bar finished product protection is good at pile crown;
Smooth at stake top, good forming effect.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this Invention will be using the range that the appended claims define as protection scope of the present invention.

Claims (6)

1. a kind of construction method of bored concrete pile broken pile head, which is characterized in that include the following steps:
Mark line is drawn in the position of corresponding design stake top on the bored concrete pile constructed, the part more than mark line is to wait for The pile crown abolished;
Carry out circumferential cutting along the mark line and form horizontal circumferential joint-cutting, the inward flange of the circumferential direction joint-cutting with it is described It is stayed between reinforcing bar in pile crown at regular intervals;
The reinforcing bar and sound detecting pipe in the pile crown are stripped out using pneumatic pick;
At the design stake top using pneumatic pick to the inside of the pile crown dig by the pile crown from root with the filling Note the pile body phase separation of stake;And
Hang out the pile crown.
2. the construction method of bored concrete pile broken pile head as described in claim 1, which is characterized in that strip out the pile crown using pneumatic pick Interior reinforcing bar, including:
Cut the concrete cover on the circumferential joint-cutting and on the outside of the reinforcing bar;
The concrete parts for wrapping up the reinforcing bar top are cut to expose the top of the reinforcing bar;
It cuts and wraps up remaining concrete parts of the reinforcing bar all to leak out the reinforcing bar in the pile crown.
3. the construction method of bored concrete pile broken pile head as claimed in claim 2, which is characterized in that strip out the pile crown using pneumatic pick Interior sound detecting pipe, including:
After stripping out the reinforcing bar, dug to the inside of the pile crown into until chisel arrives from the bottom of the reinforcing bar using pneumatic pick At the position of the sound detecting pipe, and expose by the concrete chisel for wrapping up the sound detecting pipe divided by by the sound detecting pipe.
4. the construction method of bored concrete pile broken pile head as described in claim 1, which is characterized in that strip out the pile crown using pneumatic pick Before interior reinforcing bar and sound detecting pipe, further include:
The places 20cm carry out circumferential cutting and are formed to identify to stitch above the circumferential joint-cutting.
5. the construction method of bored concrete pile broken pile head as described in claim 1, which is characterized in that using electric slicer to described Bored concrete pile carries out circumferential cutting.
6. the construction method of bored concrete pile broken pile head as described in claim 1, which is characterized in that, using pneumatic pick to the stake The inside of head is dug during, by the bore bit of the pneumatic pick in horizontal direction or the direction that tilts upward dig into.
CN201810392637.8A 2018-04-27 2018-04-27 The construction method of bored concrete pile broken pile head Pending CN108589727A (en)

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Application Number Priority Date Filing Date Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047119A (en) * 1983-08-22 1985-03-14 Mitsuhiro Ishii Vibration and noise-free breaking of head of cast-in-place pile
CN101603313A (en) * 2009-07-01 2009-12-16 中铁十三局集团第三工程有限公司 A kind of method for chiseling pile head of filling pile
CN102587380A (en) * 2012-02-08 2012-07-18 湖南省第二工程有限公司 Construction method for wholly removing drilling pile head
CN107034887A (en) * 2017-03-30 2017-08-11 河南大建桥梁钢构股份有限公司 Bored piles headring cuts construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047119A (en) * 1983-08-22 1985-03-14 Mitsuhiro Ishii Vibration and noise-free breaking of head of cast-in-place pile
CN101603313A (en) * 2009-07-01 2009-12-16 中铁十三局集团第三工程有限公司 A kind of method for chiseling pile head of filling pile
CN102587380A (en) * 2012-02-08 2012-07-18 湖南省第二工程有限公司 Construction method for wholly removing drilling pile head
CN107034887A (en) * 2017-03-30 2017-08-11 河南大建桥梁钢构股份有限公司 Bored piles headring cuts construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
亦采薇: "都腊八了,这桥墩还搞不定?留着过年吗?", 《360个人图书馆》 *

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