CN103122632A - Construction method for drilling hole and casting pile in plastic flow stratum or karst cave stratum - Google Patents

Construction method for drilling hole and casting pile in plastic flow stratum or karst cave stratum Download PDF

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Publication number
CN103122632A
CN103122632A CN2013100462646A CN201310046264A CN103122632A CN 103122632 A CN103122632 A CN 103122632A CN 2013100462646 A CN2013100462646 A CN 2013100462646A CN 201310046264 A CN201310046264 A CN 201310046264A CN 103122632 A CN103122632 A CN 103122632A
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China
Prior art keywords
casing
stratum
hole
steel casing
construction
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CN2013100462646A
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Chinese (zh)
Inventor
阎慧奎
常国栋
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中冶沈勘工程技术有限公司
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Application filed by 中冶沈勘工程技术有限公司 filed Critical 中冶沈勘工程技术有限公司
Priority to CN2013100462646A priority Critical patent/CN103122632A/en
Publication of CN103122632A publication Critical patent/CN103122632A/en

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Abstract

Provided is a construction method for drilling a hole and casting a pile in a plastic flow stratum or a karst cave stratum. According to the construction method, a thick steel casing is used for following up the whole drilling process; when the plastic flow stratum or a karst cave with a certain thickness is encountered, the thickness of the stratum is measured; before a steel reinforcement cage is placed inside the hole, a thin steel casing is arranged at the position, corresponding to the stratum, of the steel reinforcement cage in a welding mode through short reinforcing steel bars, the inner diameter of the thin steel casing is equal to the diameter of the pile, and the thin steel casing is subjected to anticorrosion treatment; a waterproof cloth pile casing is added inside the thin steel casing, wherein the diameter of the waterproof cloth pile casing is 20-50 centimeters longer than the diameter of the pile, the waterproof cloth pile casing has certain toughness, and each of two ends of the waterproof cloth pile casing is more than one meter longer than the thin steel casing; two ends of the waterproof cloth pile casing are placed inside flexible steel wire rings which are tied on the steel reinforcement cage through iron ribs, and the fact that after the binding, the distance between each flexible steel wire ring and the steel reinforcement cage is more than 5 centimeters when the flexible steel wire ring is opened completely is guaranteed; and after the hole is cleaned, the steel reinforcement cage is placed inside the hole, concrete is filled in the hole, and then the thick steel casing is pulled out. The construction method for drilling the hole and casting the pile in the plastic flow stratum or the karst cave stratum has the advantages that mortar can be effectively prevented from running off, the construction speed is high, construction cost is low, the environment is not polluted, and the quality is high.

Description

A kind of bored pile construction method of moulding stratum and Karst Cave Formation at stream
Technical field
The invention belongs to the piling Technology field, specifically a kind of bored pile construction method of moulding stratum and Karst Cave Formation at stream.
Background technology
Bored pile is to use at present pile foundation type more widely, and its mechanization degree is high, and single pile bearing is large, and pile body stiffness is strong.But present bored pile construction is running into when having certain thickness stream to mould the shape stratum, can run into the serious situation of landslide, causes the concrete fullness coefficient excessive, even causes the broken pile necking down, has a strong impact on workmanship and duration.When running into solution cavity, must insert ball clay stone, mud off and drilling construction repeatedly, long in time limit, cost is high, pollution is large.At present more advanced advances technology with pipe bit, is with long-spiral drilling machine, rotary drilling rig, down-hole hammer boring the time, recycles various device simultaneously to pressing down, bore thick steel casing, hole wall landslide when the method has effectively prevented boring.But this technology is moulded the shape stratum running into certain thickness stream, extracts steel and protects and still easily produce that mortar runs off, necking down after bucket; Run into solution cavity and particularly extract the steel casing during empty solution cavity and a large amount of concrete can occur run off, have a strong impact on pile foundation quality and construction costs.
Summary of the invention
Deficiency in view of above-mentioned prior art exists the purpose of this invention is to provide a kind of speed of application fast, and cost is low, free from environmental pollution, the measured bored pile construction method of moulding stratum and Karst Cave Formation at stream of matter.
The object of the present invention is achieved like this: its job practices is to utilize long spiral, rotary drilling rig, have the down-hole hammer of hole expansion function to carry out drilling construction, get into projected depth always, follow up as retaining wall than the thick steel casing of large 2-5 centimetre of stake diameter is omnidistance with internal diameter simultaneously, it is characterized in that: running into when having certain thickness stream to mould shape stratum or solution cavity, determining this depth of stratum, carry out preservative treatment with corresponding position, this stratum with bar dowel weldering the preceding paragraph internal diameter thin steel casing, the thin steel casing identical with the stake footpath before reinforcing cage is put into the hole, on reinforcing cage; Add the preceding paragraph diameter than large 20-50 centimetres an of footpath in thin steel casing, have canvas cloth casing, its two ends of certain toughness should grow thin steel casing more than one meter; The stone dead wire ring is inserted at canvas cloth casing two ends, this steel wire ring with reinforcing bar colligation on reinforcing cage, should guarantee after colligation steel wire ring open fully rear apart from the reinforcing cage distance greater than 5 centimetres Then be lowered to reinforcing cage, concrete perfusion after clear hole is complete, extract thick steel casing.When concrete pours into the canvas cloth casing, under pressure, the canvas cloth casing struts, the cloth casing grows the bucket wall of thin steel casing part and is close to drill hole wall, cloth casing bucket wall in thin steel casing is close to thin steel casing, effectively prevented the loss of mortar, after having poured into concrete, all extract thick steel casing, thin steel casing is stayed in the hole.
The present invention moulds at stream the advantage that the bored pile construction method of stratum and Karst Cave Formation compares and is with existing:
1, follow up as retaining wall, prevent collapse hole in work progress with the thick steel casing whole process of internal diameter than large 2-5 centimetre of stake diameter.Running into when having certain thickness stream to mould shape stratum or solution cavity, determining this depth of stratum, carry out preservative treatment with corresponding position, this stratum with bar dowel weldering the preceding paragraph internal diameter thin steel casing, the thin steel casing identical with the stake footpath before reinforcing cage is put into the hole, on reinforcing cage.This thin steel casing is forever stayed and is done supporting in the hole;
2, add the preceding paragraph diameter than large 20-50 centimetres an of footpath in thin steel casing, there are canvas cloth casing, its two ends of certain toughness should grow thin steel casing more than one meter, the stone dead wire ring is inserted at canvas cloth casing two ends, this steel wire ring with reinforcing bar colligation on reinforcing cage, guarantee after colligation steel wire ring open fully rear apart from the reinforcing cage distance greater than 5 centimetres.When concrete poured into the canvas cloth casing, under pressure, the canvas cloth casing struts, the cloth casing grew the bucket wall of thin steel casing part and is close to drill hole wall, and the cloth casing bucket wall in thin steel casing is close to thin steel casing, has effectively prevented the loss of mortar;
3, have a speed of application fast, cost is low, free from environmental pollution, the measured characteristics of matter.
Below in conjunction with accompanying drawing, the present invention is described further.
Description of drawings
Fig. 1 is that the present invention holes and completes, and is lowered to the schematic diagram after reinforcing cage;
Fig. 2 is that the present invention has poured into concrete, extracts the schematic diagram after thick steel casing.
The specific embodiment
A kind of have stream to mould the bored pile construction method of stratum and Karst Cave Formation, its content mainly comprises: utilize long spiral, rotary drilling rig, have the down-hole hammer of hole expansion function to carry out drilling construction, get into projected depth always, simultaneously with internal diameter than the omnidistance follow-up of thick steel casing 1 of large 2-5 centimetre of stake diameter as retaining wall, prevent collapse hole in construction.The thickness of the tube wall 2 of thick steel casing 1 tube wall deformation, impact more than 10MM, when preventing from reusing are lowered to thin steel casing.
Running into when having certain thickness stream to mould shape stratum or solution cavity 3, determining this depth of stratum, carry out preservative treatment with corresponding position, this stratum with bar dowel 8 weldering the preceding paragraph internal diameters thin steel casing 5, the thin steel casing 5 identical with the stake footpath before reinforcing cage 4 is put into the hole, on reinforcing cage 4.Add the preceding paragraph diameter in tube wall 6 inboards of thin steel casing 5 than large 20-50 centimetres of stake footpath, there are canvas cloth casing 7, its two ends of certain toughness should grow thin steel casing more than one meter, stone dead wire ring 10 is inserted at canvas cloth casing two ends, this steel wire ring with iron wire 11 colligations on reinforcing cage 4, guarantee after colligation steel wire ring 10 open fully rear apart from the reinforcing cage distance greater than 5 centimetres.Then be lowered to reinforcing cage 4, concrete perfusion after clear hole is complete, extract thick steel casing 1.When concrete pours into canvas cloth casing 7, under pressure, the bucket wall 9 of canvas cloth casing 7 struts, cloth casing 7 grows the cloth casing wall 9 of the part of thin steel casing 5 and is close to drill hole wall, cloth casing bucket wall 9 in thin steel casing 5 is close to thin steel casing wall 6, effectively prevented the loss of mortar, after having poured into concrete, all extract thick steel casing 1, thin steel casing 5 is stayed and is done permanent support in the hole
Above-described embodiment is preferred embodiment of the present invention, is not to limit successively protection scope of the present invention, therefore: all equivalences of doing according to structure of the present invention, shape, principle change, within all should being covered by protection of the present invention.

Claims (1)

1. bored pile construction method of moulding stratum and Karst Cave Formation at stream, the method is to utilize long spiral, rotary drilling rig, there is the down-hole hammer of hole expansion function to carry out drilling construction, get into projected depth always, follow up as retaining wall than the thick steel casing of large 2-5 centimetre of stake diameter is omnidistance with internal diameter simultaneously, it is characterized in that: running into when having certain thickness stream to mould shape stratum or solution cavity, determine this depth of stratum, before reinforcing cage is put into the hole, weld the preceding paragraph internal diameter thin steel casing identical with the stake footpath with corresponding position, this stratum with bar dowel on reinforcing cage, thin steel casing carries out preservative treatment, add the preceding paragraph diameter than large 20-50 centimetres an of footpath in thin steel casing, have canvas cloth casing, its two ends of certain toughness should grow thin steel casing more than one meter, the stone dead wire ring is inserted at canvas cloth casing two ends, this steel wire ring with reinforcing bar colligation on reinforcing cage, should guarantee after colligation steel wire ring open fully rear apart from the reinforcing cage distance greater than 5 centimetres, then be lowered to reinforcing cage, concrete perfusion after clear hole is complete, extract thick steel casing.
CN2013100462646A 2013-02-06 2013-02-06 Construction method for drilling hole and casting pile in plastic flow stratum or karst cave stratum CN103122632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100462646A CN103122632A (en) 2013-02-06 2013-02-06 Construction method for drilling hole and casting pile in plastic flow stratum or karst cave stratum

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CN2013100462646A CN103122632A (en) 2013-02-06 2013-02-06 Construction method for drilling hole and casting pile in plastic flow stratum or karst cave stratum

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867120A (en) * 2014-03-24 2014-06-18 卢耒运 Construction method of drilled grouting piles under special geological condition
CN104612143A (en) * 2014-12-31 2015-05-13 云南建工基础工程有限责任公司 Bored composite pile structure under karst cave/soil cave geological condition
CN105113491A (en) * 2015-09-25 2015-12-02 黄国庆 Construction method of pore-forming pouring pile
CN105464122A (en) * 2015-11-18 2016-04-06 中铁大桥勘测设计院集团有限公司 Construction method for major-diameter hollow pile sinking foundation
CN103867120B8 (en) * 2014-03-24 2016-05-04 卢来运 The construction method of cast-in-situ bored pile under special geologic condition
CN106677168A (en) * 2017-01-17 2017-05-17 浙江勤业建工集团有限公司 Construction method of cast-in-place superfluid concrete pile
CN107246006A (en) * 2017-06-29 2017-10-13 深圳市蛇口招商港湾工程有限公司 Concrete-pile reinforcement cage structure and pile-filling method
CN109577324A (en) * 2018-11-01 2019-04-05 中交第二航务工程局有限公司 The flexible casing and its installation method for preventing concrete to be lost
CN109868810A (en) * 2019-02-27 2019-06-11 中建一局集团第一建筑有限公司 One kind passing through buried major diameter discarded pipe and does operation pile making method
CN110670584A (en) * 2019-09-05 2020-01-10 中冶交通建设集团有限公司 Cast-in-situ bored pile and construction method thereof
CN111042176A (en) * 2019-12-14 2020-04-21 中冶天工集团有限公司 Device for rapidly processing rotary excavation pile foundation karst cave and using method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116810B2 (en) * 1981-08-27 1986-05-02 Taisei Corp
CN1490467A (en) * 2003-08-05 2004-04-21 胡柏英 Composite friction pile structure and constructing method thereof
CN102071645A (en) * 2010-12-31 2011-05-25 中铁大桥局集团有限公司 Bridge bored pile hole wall opening protection method
CN202323936U (en) * 2011-11-30 2012-07-11 昆明捷程桩工有限责任公司 Softly-wrapped reinforcing cage for preventing pile diameter variation of filling concrete piles
CN102852140A (en) * 2012-10-10 2013-01-02 东华理工大学 Curtain type cave filling pile construction method and elastic mesh cloth

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116810B2 (en) * 1981-08-27 1986-05-02 Taisei Corp
CN1490467A (en) * 2003-08-05 2004-04-21 胡柏英 Composite friction pile structure and constructing method thereof
CN102071645A (en) * 2010-12-31 2011-05-25 中铁大桥局集团有限公司 Bridge bored pile hole wall opening protection method
CN202323936U (en) * 2011-11-30 2012-07-11 昆明捷程桩工有限责任公司 Softly-wrapped reinforcing cage for preventing pile diameter variation of filling concrete piles
CN102852140A (en) * 2012-10-10 2013-01-02 东华理工大学 Curtain type cave filling pile construction method and elastic mesh cloth

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867120A (en) * 2014-03-24 2014-06-18 卢耒运 Construction method of drilled grouting piles under special geological condition
CN103867120B (en) * 2014-03-24 2016-02-03 卢耒运 The construction method of bored pile under special geologic condition
CN103867120B8 (en) * 2014-03-24 2016-05-04 卢来运 The construction method of cast-in-situ bored pile under special geologic condition
CN104612143A (en) * 2014-12-31 2015-05-13 云南建工基础工程有限责任公司 Bored composite pile structure under karst cave/soil cave geological condition
CN105113491A (en) * 2015-09-25 2015-12-02 黄国庆 Construction method of pore-forming pouring pile
CN105464122A (en) * 2015-11-18 2016-04-06 中铁大桥勘测设计院集团有限公司 Construction method for major-diameter hollow pile sinking foundation
CN106677168A (en) * 2017-01-17 2017-05-17 浙江勤业建工集团有限公司 Construction method of cast-in-place superfluid concrete pile
CN107246006B (en) * 2017-06-29 2019-11-05 深圳市蛇口招商港湾工程有限公司 The pile-filling method of concrete-pile
CN107246006A (en) * 2017-06-29 2017-10-13 深圳市蛇口招商港湾工程有限公司 Concrete-pile reinforcement cage structure and pile-filling method
CN109577324A (en) * 2018-11-01 2019-04-05 中交第二航务工程局有限公司 The flexible casing and its installation method for preventing concrete to be lost
CN109577324B (en) * 2018-11-01 2020-12-01 中交第二航务工程局有限公司 Flexible pile casing for preventing concrete loss and installation method thereof
CN109868810A (en) * 2019-02-27 2019-06-11 中建一局集团第一建筑有限公司 One kind passing through buried major diameter discarded pipe and does operation pile making method
CN110670584A (en) * 2019-09-05 2020-01-10 中冶交通建设集团有限公司 Cast-in-situ bored pile and construction method thereof
CN111042176A (en) * 2019-12-14 2020-04-21 中冶天工集团有限公司 Device for rapidly processing rotary excavation pile foundation karst cave and using method thereof

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Application publication date: 20130529