CN104563126B - A kind of churning driven bored pile construction method - Google Patents

A kind of churning driven bored pile construction method Download PDF

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Publication number
CN104563126B
CN104563126B CN201410800440.5A CN201410800440A CN104563126B CN 104563126 B CN104563126 B CN 104563126B CN 201410800440 A CN201410800440 A CN 201410800440A CN 104563126 B CN104563126 B CN 104563126B
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China
Prior art keywords
steel pile
pile casting
churning driven
casting
steel
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CN201410800440.5A
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Chinese (zh)
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CN104563126A (en
Inventor
寇海军
吴庆冬
孙延明
吴晓峰
蒋俊辉
由文和
侯凯
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China Railway 19th Bureau Group Co Ltd
Fifth Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
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China Railway 19th Bureau Group Co Ltd
Fifth Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
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Publication of CN104563126A publication Critical patent/CN104563126A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/385Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/06Placing concrete under water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/40Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds in open water

Abstract

The present invention relates to Bored Pile of Bridge technical field of construction, particularly relate to a kind of churning driven bored pile construction method.Churning driven bored pile construction method provided by the invention, steel pile casting be divide into more piece, each joint steel pile casting is installed separately, and each joint steel pile casting is linked to be an entirety by the mode of pin joint, form the steel pile casting that a length is enough to through silt clay layer or drifting sand layer thickness, solve in traditional construction method, in silt clay layer or drifting sand layer boring procedure, steel pile casting or depression or stratum meet with collapse hole, drilling construction cannot normally carry out, and causes pile foundation cannot the technical problem of pore-forming; Adopt wall thickness to be 3cm steel pile casting simultaneously, larger pressure can be born, the problem that steel pile casting causes steel pile casting to be extruded distortion even damaging because external and internal pressure difference is excessive can be avoided, and steel pile casting wall thickness is larger, Stability Analysis of Structures, longer service life, steel pile casting utilization rate is higher, can reduce construction cost.

Description

A kind of churning driven bored pile construction method
Technical field
The present invention relates to Bored Pile of Bridge technical field of construction, particularly relate to a kind of churning driven bored pile construction method.
Background technology
At present, in Bored Pile of Bridge construction, when underground water in formation volumes of constructing is less or stratum comparatively stable not easily collapse hole time, adopt churning driven construction pore-creating speed relatively very fast, work efficiency is high.And when stratum is silt clay, or during drifting sand layer, steel pile casting can not stably be attached in stratum, in boring procedure, steel pile casting or depression or stratum meet with collapse hole, and drilling construction cannot normally carry out, and cause pile foundation cannot pore-forming.Solve the problem, come through silt clay layer or drifting sand layer with regard to needing with longer steel pile casting, the length of steel pile casting used in existing construction method is generally 1.5 ~ 4 meters, and the degree of depth of silt clay layer or drifting sand layer is at about 10 meters, even thicker, the length of existing steel pile casting, user demand cannot be met, if and increase the length of steel pile casting, then crane lifting steel pile casting difficulty is larger, if adopt the crane of large model, with regard to there will be the problem of waste resource of wasting one's talent on a petty job, add construction cost; In existing construction method, the wall thickness of described used steel pile casting is thinner, generally at below 10mm, and the steel pile casting be in silt clay layer or drifting sand layer, its inside and outside differential pressure is comparatively large, is easy to cause steel pile casting to be extruded distortion, even damage, have a strong impact on progress and the quality of boring piling.
Therefore, for above deficiency, need to provide a kind of and can stablize the churning driven bored pile construction method forming boring.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: existing boring method, and in silt clay layer or drifting sand layer boring procedure, steel pile casting or depression or stratum meet with collapse hole, and drilling construction cannot normally carry out, and causes pile foundation cannot pore-forming.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of churning driven bored pile construction method, comprise the following steps: step 1, to have good positioning pile foundation hole position, churning driven drilling rod is connected with connector, connector and first segment steel pile casting is removably linked together simultaneously, start churning driven, first segment steel pile casting is sunk down into below earth's surface by churning driven, stops sinking as first segment steel pile casting distance from top earth's surface residue 50cm; Step 2, takes apart connector and first segment steel pile casting, and is translated apart churning driven drilling rod; Step 3, lifting churning driven drilling rod, second section steel pile casting is removably connected with connector, then second section steel pile casting is moved to position, hole, again the first segment steel pile casting sinking to putting in place is removably connected with second section steel pile casting, by churning driven by below the first segment steel pile casting that links together and second section sinking steel protecting canister to earth's surface, stop sinking as the distance from top earth's surface residue 50cm of second section steel pile casting, connector and second section steel pile casting are taken apart, and is translated apart churning driven drilling rod; Step 4, repeats step 3 until the steel pile casting degree of depth of sinking penetrates unstable silt clay stratum or drifting sand layer completely, and in injection good ground; Step 5, after sinking steel protecting canister puts in place, starts normal churning driven drilling construction; Step 6, after pore-forming, descending reinforcing cage, perfusion pile body underwater concrete; Step 7,30min after pile concrete has poured into, churning driven is in place, aims at steel pile casting center, up-down adjustment drilling rod height, is removably linked together by the most epimerite steel pile casting on connector and stand-down; Step 8, starts churning driven, slowly revolves to rise to extract steel pile casting, is pulled down by most epimerite steel pile casting; Step 9, repeats step 8, removes all joints joint steel pile casting section by section; Step 10, repeats above-mentioned steps 1-9, next pile base of constructing.
Wherein, described steel pile casting is tenon coupling steel pile casting.
Wherein, described connector is connected with the mode between steel pile casting with all by pin joint between adjacent steel pile casting.
Wherein, in step 4, the length that steel pile casting sinks in good ground is not less than 50cm.
Wherein, the height between the top of final section steel pile casting and earth's surface is no less than 50cm.
Wherein, the speed pulling up steel pile casting in step 8 should be less than or equal to 1m/min.
Wherein, the bottom of first segment steel pile casting is connected with the screwing-in device for alleviating penetration resistance.
(3) beneficial effect
Technique scheme tool of the present invention has the following advantages: the invention provides a kind of churning driven bored pile construction method, comprise the following steps: step 1, to have good positioning pile foundation hole position, churning driven drilling rod is connected with connector, connector and first segment steel pile casting are removably linked together simultaneously, start churning driven, first segment steel pile casting is sunk down into below earth's surface by churning driven, stop sinking as first segment steel pile casting distance from top earth's surface residue 50cm; Step 2, takes apart connector and first joint formula steel pile casting, and is translated apart churning driven drilling rod; Step 3, lifting churning driven drilling rod, second section steel pile casting is removably connected with connector, then second section steel pile casting is moved to position, hole, again the first segment steel pile casting sinking to putting in place is removably connected with second section steel pile casting, by churning driven by below the first segment steel pile casting that links together and second section sinking steel protecting canister to earth's surface, stop sinking as the distance from top earth's surface residue 50cm of second section steel pile casting, connector and second section steel pile casting are taken apart, and is translated apart churning driven drilling rod; Step 4, repeats step 3 until the steel pile casting degree of depth of sinking penetrates unstable silt clay stratum or drifting sand layer completely, and in injection good ground; Step 5, after sinking steel protecting canister puts in place, starts normal churning driven drilling construction; Step 6, after pore-forming, descending reinforcing cage, perfusion pile body underwater concrete; Step 7,30min after pile concrete has poured into, churning driven is in place, aims at steel pile casting center, up-down adjustment drilling rod height, is removably linked together by the most epimerite steel pile casting on connector and stand-down; Step 8, starts churning driven, slowly revolves to rise to extract steel pile casting, is pulled down by most epimerite steel pile casting; Step 9, repeats step 8, removes all joints joint steel pile casting section by section; Step 10, repeats above-mentioned steps 1-9, next pile base of constructing.Method provided by the invention, steel pile casting be divide into more piece, each joint steel pile casting is installed separately, and each joint steel pile casting is linked to be an entirety by the mode of pin joint, form the steel pile casting that a length is enough to through silt clay layer or drifting sand layer thickness, solve in traditional construction method, in silt clay layer or drifting sand layer boring procedure, steel pile casting or depression or stratum meet with collapse hole, and drilling construction cannot normally carry out, and cause pile foundation cannot the technical problem of pore-forming.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
The invention provides a kind of churning driven bored pile construction method, comprise the following steps: step 1, to have good positioning pile foundation hole position, churning driven drilling rod is connected with connector, connector and first segment steel pile casting are removably linked together simultaneously, start churning driven, first segment steel pile casting is sunk down into below earth's surface by churning driven, stop sinking as first segment steel pile casting distance from top earth's surface residue 50cm; Step 2, takes apart connector and first joint formula steel pile casting, and is translated apart churning driven drilling rod; Step 3, lifting churning driven drilling rod, second section steel pile casting is removably connected with connector, then second section steel pile casting is moved to position, hole, again the first segment steel pile casting sinking to putting in place is removably connected with second section steel pile casting, by churning driven by below the first segment steel pile casting that links together and second section sinking steel protecting canister to earth's surface, stop sinking as the distance from top earth's surface residue 50cm of second section steel pile casting, connector and second section steel pile casting are taken apart, and is translated apart churning driven drilling rod; Step 4, repeat step 3 until the steel pile casting degree of depth of sinking penetrates unstable silt clay stratum or drifting sand layer completely, and in injection good ground, the length that steel pile casting sinks in good ground is not less than 50cm, can avoid steel pile casting depression better in silt clay layer or drifting sand layer, ensure carrying out smoothly of boring work; Step 5, after sinking steel protecting canister puts in place, starts normal churning driven drilling construction; Step 6, after pore-forming, descending reinforcing cage, perfusion pile body underwater concrete; Step 7,30min after pile concrete has poured into, churning driven is in place, aims at steel pile casting center, up-down adjustment drilling rod height, is removably linked together by the most epimerite steel pile casting on connector and stand-down; Step 8, starts churning driven, slowly revolves to rise to extract steel pile casting, pulled down by most epimerite steel pile casting, and the speed pulling up steel pile casting should be less than or equal to 1m/min, can avoid like this causing steel pile casting to damage because hoisting velocity is excessive; Step 9, repeats step 8, removes all joints joint steel pile casting section by section; Step 10, repeats above-mentioned steps 1-9, next pile base of constructing.Steel pile casting be divide into more piece, each joint steel pile casting is installed separately, and each joint steel pile casting is linked to be an entirety by the mode of pin joint, form the steel pile casting that a length is enough to through silt clay layer or drifting sand layer thickness, solve in traditional construction method, in silt clay layer or drifting sand layer boring procedure, steel pile casting or depression or stratum meet with collapse hole, drilling construction cannot normally carry out, and causes pile foundation cannot the technical problem of pore-forming, and each joint steel pile casting can be set to differing heights, therefore the convenient control of the active length of whole steel pile casting, freely can arrange according to the thickness of unfavorable geology layer, adopt pore wall thickness to be 3cm steel pile casting simultaneously, larger pressure can be born, steel pile casting can be avoided to cause being extruded distortion because the pressure differential inside and outside steel pile casting in silt clay layer or drifting sand layer boring procedure is excessive, simultaneously, steel pile casting wall thickness is larger, Stability Analysis of Structures, can reuse, as long as protect proper, service life is very long, many decades can be reached, steel pile casting utilization rate is higher, and this steel pile casting structure is simple, be easy to processing, handled easily, be beneficial to and promote the use of.
It should be noted that, this steel pile casting only can sink with churning driven, but can adopt any drilling machine construction stake holes after sinking is good.
Particularly, steel pile casting used in said method is tenon coupling steel pile casting, the top and bottom of often saving steel pile casting are provided with connection trip, the circumference of the external surface of one end of steel pile casting is particularly provided with the projection of multiple arch, the other end is provided with the opening of multiple arch, be connected together by described projection and described open card between adjacent steel pile casting, the circumference between two steel pile casting is positioned, prevent the problem occurring between two steel pile casting cooperatively interacting misplacing.It should be noted that, described projection can be also other shapes, as strip, rectangle etc.; only need to ensure that the shape of described projection and described opening, size and quantity match; can realize the object of the application, its aim does not depart from thought of the present invention, should belong to protection scope of the present invention yet.
It should be noted that, the height on final section steel pile casting stand-down should be not less than 50cm, the connection so conveniently and between steel pile casting and connector.
Preferably, described connector is connected with the mode between steel pile casting with all by pin joint between adjacent steel pile casting, dismounting like this between connector and steel pile casting or adjacent steel pile casting all realizes by assembling-disassembling bolt pin, and annexation is very simple, is convenient to operated by personnel.
Preferably, the wall thickness of steel pile casting that the present invention uses is 3cm, can bear larger pressure, can avoid steel pile casting because of in silt clay layer or drifting sand layer boring procedure steel pile casting excessive and cause being extruded distortion because bearing pressure, simultaneously, steel pile casting wall thickness is comparatively large, and Stability Analysis of Structures, can reuse, as long as protect proper, service life is very long, can many decades, and utilization rate is higher; And this steel pile casting is easy to processing, and handled easily, is beneficial to and promotes the use of.
Preferably, the bottom of described first segment steel pile casting is connected with the screwing-in device for alleviating penetration resistance, described screwing-in device is 18 alloy drill bits that first segment steel pile casting bottom rivet welding connects, described alloy drill bit is the bottom that dentation is distributed on described first segment casing, it is long that 8cm in described first segment casing is entered in described alloy drill bit riveting, expose 6cm, the setting of alloy drill bit can strengthen to start at rotary drilling rig creeps into power when creeping into, reduce the penetration resistance because thicker steel pile casting wall thickness produces, improve the speed of sinking steel pile casting
In sum, churning driven bored pile construction method provided by the invention, steel pile casting be divide into more piece, each joint steel pile casting is installed separately, and each joint steel pile casting is linked to be an entirety by the mode of pin joint, form the steel pile casting that a length is enough to through silt clay layer or drifting sand layer thickness, solve in traditional construction method, in silt clay layer or drifting sand layer boring procedure, steel pile casting or depression or stratum meet with collapse hole, drilling construction cannot normally carry out, and causes pile foundation cannot the technical problem of pore-forming; And each joint steel pile casting can be set to differing heights, therefore the convenient control of the active length of whole steel pile casting, freely can arrange according to the thickness of unfavorable geology layer, adopt pore wall thickness to be 3cm steel pile casting simultaneously, larger pressure can be born, steel pile casting can be avoided to cause being extruded distortion because the pressure differential inside and outside steel pile casting in silt clay layer or drifting sand layer boring procedure is excessive, simultaneously, steel pile casting wall thickness is comparatively large, and Stability Analysis of Structures, can reuse, as long as protect proper, service life is very long, can many decades, and utilization rate is higher; And this steel pile casting is easy to processing, and handled easily, is beneficial to and promotes the use of.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (7)

1. a churning driven bored pile construction method, is characterized in that: comprise the following steps:
Step 1, to have good positioning pile foundation hole position, churning driven drilling rod is connected with connector, connector and first segment steel pile casting are removably linked together simultaneously, start churning driven, first segment steel pile casting is sunk down into below earth's surface by churning driven, stops sinking as first segment steel pile casting distance from top earth's surface residue 50cm;
Step 2, takes apart connector and first segment steel pile casting, and is translated apart churning driven drilling rod;
Step 3, promote churning driven drilling rod, second section steel pile casting is removably connected with connector, then second section steel pile casting is moved to position, hole, again the first segment steel pile casting that puts in place of sinking removably is connected with second section steel pile casting, by churning driven by below the first segment steel pile casting that links together and second section sinking steel protecting canister to earth's surface, stops sinking as the distance from top earth's surface residue 50cm of second section steel pile casting, connector and second section steel pile casting are taken apart, and is translated apart churning driven drilling rod;
Step 4, repeats step 3 until the steel pile casting degree of depth of sinking penetrates unstable silt clay stratum or drifting sand layer completely, and in injection good ground;
Step 5, after sinking steel protecting canister puts in place, starts normal churning driven drilling construction;
Step 6, after pore-forming, descending reinforcing cage, perfusion pile body underwater concrete;
Step 7,30min after pile concrete has poured into, churning driven is in place, aims at steel pile casting center, up-down adjustment drilling rod height, is removably linked together by the most epimerite steel pile casting on connector and stand-down;
Step 8, starts churning driven, slowly revolves to rise to extract steel pile casting, is pulled down by most epimerite steel pile casting;
Step 9, repeats step 8, removes all joint steel pile casting section by section;
Step 10, repeats above-mentioned steps 1-9, next pile base of constructing.
2. churning driven bored pile construction method according to claim 1, is characterized in that: described steel pile casting is tenon coupling steel pile casting.
3. churning driven bored pile construction method according to claim 1, is characterized in that: described connector is connected with the mode between steel pile casting with all by pin joint between adjacent steel pile casting.
4. churning driven bored pile construction method according to claim 1, it is characterized in that: in step 4, the length that steel pile casting sinks in good ground is not less than 50cm.
5. churning driven bored pile construction method according to claim 1, is characterized in that: the height between the top of final section steel pile casting and earth's surface is no less than 50cm.
6. churning driven bored pile construction method according to claim 1, is characterized in that: the speed pulling up steel pile casting in step 8 should be less than or equal to 1m/min.
7. churning driven bored pile construction method according to claim 1, is characterized in that: the bottom of first segment steel pile casting is connected with the screwing-in device for alleviating penetration resistance.
CN201410800440.5A 2014-12-22 2014-12-22 A kind of churning driven bored pile construction method Active CN104563126B (en)

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CN104988915B (en) * 2015-07-15 2017-03-29 中铁上海工程局集团有限公司 A kind of prefabricated installation method of detachable steel casing and under water connection beam
CN105297757A (en) * 2015-10-21 2016-02-03 中铁港航局集团有限公司 Construction method for quicksand layer pile foundation
CN106087995A (en) * 2016-06-08 2016-11-09 深圳市宏业基基础工程有限公司 The method of stake is built in a kind of boring
CN108049396A (en) * 2017-12-21 2018-05-18 中铁三局集团华东建设有限公司 Cast-in-situ bored pile churning driven sleeve drilling construction method
CN110374101A (en) * 2019-07-16 2019-10-25 深圳市市政工程总公司 A kind of high pressure-bearing crevice water earth-boring cast-in-place pile casing construction method

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JP2011208373A (en) * 2010-03-29 2011-10-20 Nippon Steel & Sumikin Metal Products Co Ltd Mechanical joint structure of steel pipe pile
CN102304922B (en) * 2011-09-19 2013-10-30 北京市三一重机有限公司 Full-pile casing construction device
CN102877467A (en) * 2012-09-12 2013-01-16 陈瑜 Casing body connection device for bored pile

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