CN109113050A - A kind of construction method of concrete vibroflotation composite pile - Google Patents

A kind of construction method of concrete vibroflotation composite pile Download PDF

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Publication number
CN109113050A
CN109113050A CN201811118601.7A CN201811118601A CN109113050A CN 109113050 A CN109113050 A CN 109113050A CN 201811118601 A CN201811118601 A CN 201811118601A CN 109113050 A CN109113050 A CN 109113050A
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China
Prior art keywords
concrete
vibroflotation
construction method
rotary digging
composite pile
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CN201811118601.7A
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Chinese (zh)
Inventor
王常青
邹延辉
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Individual
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Individual
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Priority to CN201811118601.7A priority Critical patent/CN109113050A/en
Publication of CN109113050A publication Critical patent/CN109113050A/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
    • 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
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

A kind of construction method of concrete vibroflotation composite pile, it is related to a kind of pile foundation construction method.The present invention solves existing cast-in-place concrete pile and is unable to fully vibrate, and leads to the problem of the bearing capacity of an end and stake side difference.Drilling: using long-spiral drilling machine rotary digging drilling hole, and rotary digging pore diameter range is 300~1000mm;The injection of concrete: high slump concrete guard wall pore-forming is injected from twist bit bottom;Drill bit is promoted: guaranteeing that drill bit of spiral drilling machine promotes speed and is lower than filling concrete speed, until drill bit of spiral drilling machine is all promoted to the perfusion of completion concrete outside hole;It vibrates and tamps: being inserted into prefabricated high-strength concrete component in filling concrete hole into step 3, vibration-impact type compacting is carried out to pile concrete using prefabricated high-strength concrete component and is vibrated, the distance between the outer rim of the prefabricated high-strength concrete component and rotary digging aperture inner wall are 10~100mm, ultimately form concrete vibroflotation composite pile.The present invention is used for pile foundation construction.

Description

A kind of construction method of concrete vibroflotation composite pile
Technical field
The present invention relates to a kind of construction methods of concrete vibroflotation composite pile.
Background technique
With the high speed development of Building Trade in China, the requirement to the bearing capacity of building lot is also higher and higher, foundation Form is also varied, and cast-in-place concrete pile application is also than wide.
Currently, being unable to fully shake due to being influenced entire pile concrete by construction technology in Concrete Grouting Pale It smashes, therefore pile integrity, quality controllable degree are poor, and the bearing capacity of foundation pile stake end and stake side is caused to generate very big damage It loses.
Summary of the invention
The present invention is to solve existing cast-in-place concrete pile to be unable to fully vibrate, and causes the bearing capacity of an end and stake side poor The problem of, and then provide a kind of construction method of concrete vibroflotation composite pile.
The technical solution adopted by the present invention to solve the above technical problem is:
The construction method of concrete vibroflotation composite pile of the invention is realized according to following steps:
Step 1: drilling: using long-spiral drilling machine rotary digging drilling hole, rotary digging pore diameter range is 300~1000mm;
Step 2: the injection of concrete: injecting high slump concrete guard wall pore-forming from twist bit bottom;
Step 3: drill bit is promoted: guaranteeing that drill bit of spiral drilling machine promotes speed and is lower than filling concrete speed, until auger Machine drill head is all promoted to the perfusion that concrete is completed outside hole;
Step 4: vibrating and tamping: being inserted into prefabricated high-strength concrete component in filling concrete hole into step 3, utilize Prefabricated high-strength concrete component carries out vibration-impact type compacting to pile concrete and vibrates, outside the prefabricated high-strength concrete component The distance between edge and rotary digging aperture inner wall are 10~100mm, ultimately form concrete vibroflotation composite pile.
Further, rotary digging pore diameter range is 350~950mm in step 1.
Further, rotary digging pore diameter range is 400~900mm in step 1.
Further, the distance between the outer rim of prefabricated high-strength concrete component and rotary digging aperture inner wall described in step 4 For 20~90mm.
Further, the distance between the outer rim of prefabricated high-strength concrete component and rotary digging aperture inner wall described in step 4 For 30~80mm.
Further, concrete injection pipe, the length of concrete injection pipe are provided in step 2 at twist bit center Setting identical as the drilling tool length of twist bit.
Compared with the prior art, the invention has the following beneficial effects:
The construction method of concrete vibroflotation composite pile of the invention improves stake by sufficiently vibrating to pile concrete All collateral resistances and end resistance, it is 1.5~3.0 that collateral resistance, which improves coefficient, in sandy soil layer, and collateral resistance improves system in viscous soil horizon Number is 1.3~1.5;
The construction method of concrete vibroflotation composite pile of the invention is using the prefabricated high-strength concrete component device to hole bottom of insertion The compacting of high frequency vibration-impact type, improves a bottom solum compression modulus, has tamped stake end loosened soil, improved end resistance, to stake bottom Loosened soil plays solidification;It is 1.8~3.0 that end resistance, which improves coefficient, in sandy soils, and end resistance improves system in viscous soil horizon Number is 1.6~1.8;
Core of the prefabricated high-strength concrete component of the construction method of concrete vibroflotation composite pile of the invention as stake is protected The globality for the stake demonstrate,proved improves pile body compression strength;Greatly improve the bearing capacity of stake simultaneously, stake it is quality controllable, can operate Property it is strong, securely and reliably, than common filling pile save cost 20%~30%.
Specific embodiment
Specific embodiment 1: the construction method of concrete vibroflotation composite pile described in present embodiment is according to following steps It realizes:
Step 1: drilling: using long-spiral drilling machine rotary digging drilling hole, rotary digging pore diameter range is 300~1000mm;
Step 2: the injection of concrete: injecting high slump concrete guard wall pore-forming from twist bit bottom;
Step 3: drill bit is promoted: guaranteeing that drill bit of spiral drilling machine promotes speed and is lower than filling concrete speed, until auger Machine drill head is all promoted to the perfusion that concrete is completed outside hole;
Step 4: vibrating and tamping: being inserted into prefabricated high-strength concrete component in filling concrete hole into step 3, utilize Prefabricated high-strength concrete component carries out vibration-impact type compacting to pile concrete and vibrates, outside the prefabricated high-strength concrete component The distance between edge and rotary digging aperture inner wall are 10~100mm, ultimately form concrete vibroflotation composite pile.
It is that the upper end of prefabricated high-strength concrete component is mounted on large-scale vibrating instrument that vibration-impact type, which is tamped and vibrated,.
Specific embodiment 2: rotary digging pore diameter range is 350~950mm in present embodiment step 1.So operation is protected The globality for having demonstrate,proved pile foundation improves the compression strength of pile body.Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: rotary digging pore diameter range is 400~900mm in present embodiment step 1.So operation is protected The globality for having demonstrate,proved pile foundation improves the compression strength of pile body.Other compositions and connection relationship are identical with embodiment two.
Specific embodiment 4: the outer rim of prefabricated high-strength concrete component described in present embodiment step 4 and rotary digging hole The distance between diameter inner wall is 20~90mm.So operation, shakes to pile concrete convenient for prefabricated high-strength concrete component It rushes formula compacting and vibrates.Other compositions and connection relationship are identical as specific embodiment one, two or three.
Specific embodiment 5: the outer rim of prefabricated high-strength concrete component described in present embodiment step 4 and rotary digging hole The distance between diameter inner wall is 30~80mm.So operation, shakes to pile concrete convenient for prefabricated high-strength concrete component It rushes formula compacting and vibrates.Other compositions and connection relationship are identical as specific embodiment four.
Specific embodiment 6: being provided with concrete injection pipe in present embodiment step 2 at twist bit center, mix The length setting identical as the drilling tool length of twist bit of solidifying soil injection pipe.Twist bit bottom note may be implemented in so operation Enter high slump concrete.Other compositions and connection relationship and specific embodiment one, two, three or five are identical.

Claims (6)

1. a kind of construction method of concrete vibroflotation composite pile, it is characterised in that the construction method of the concrete vibroflotation composite pile It is to be realized according to following steps:
Step 1: drilling: using long-spiral drilling machine rotary digging drilling hole, rotary digging pore diameter range is 300~1000mm;
Step 2: the injection of concrete: injecting high slump concrete guard wall pore-forming from twist bit bottom;
Step 3: drill bit is promoted: guaranteeing that drill bit of spiral drilling machine promotes speed and is lower than filling concrete speed, until auger machine drill Head is all promoted to the perfusion that concrete is completed outside hole;
Step 4: vibrating and tamping: being inserted into prefabricated high-strength concrete component in filling concrete hole into step 3, utilization is prefabricated High-strength concrete component vibration-impact type compacting and vibrate to pile concrete, the outer rim of the prefabricated high-strength concrete component with The distance between rotary digging aperture inner wall is 10~100mm, ultimately forms concrete vibroflotation composite pile.
2. the construction method of concrete vibroflotation composite pile according to claim 1, it is characterised in that rotary digging hole in step 1 Diameter range is 350~950mm.
3. the construction method of concrete vibroflotation composite pile according to claim 2, it is characterised in that rotary digging hole in step 1 Diameter range is 400~900mm.
4. the construction method of concrete vibroflotation composite pile according to claim 1,2 or 3, it is characterised in that institute in step 4 Stating the distance between outer rim and rotary digging aperture inner wall of prefabricated high-strength concrete component is 20~90mm.
5. the construction method of concrete vibroflotation composite pile according to claim 4, it is characterised in that pre- described in step 4 The distance between the outer rim of high-strength concrete component processed and rotary digging aperture inner wall are 30~80mm.
6. the according to claim 1, construction method of concrete vibroflotation composite pile described in 2,3 or 5, it is characterised in that in step 2 It is provided with concrete injection pipe at twist bit center, the length of the concrete injection pipe and drilling tool length of twist bit is identical sets It sets.
CN201811118601.7A 2018-09-19 2018-09-19 A kind of construction method of concrete vibroflotation composite pile Pending CN109113050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811118601.7A CN109113050A (en) 2018-09-19 2018-09-19 A kind of construction method of concrete vibroflotation composite pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811118601.7A CN109113050A (en) 2018-09-19 2018-09-19 A kind of construction method of concrete vibroflotation composite pile

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Publication Number Publication Date
CN109113050A true CN109113050A (en) 2019-01-01

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487252A (en) * 2009-02-13 2009-07-22 中建八局第一建设有限公司 Construction process of cast-in-situ bored pile
CN104831708A (en) * 2015-03-20 2015-08-12 深圳市工勘岩土集团有限公司 Foundation excavation retaining and protecting cast-in-situ bored pile construction method and equipment thereof
CN107524142A (en) * 2017-09-20 2017-12-29 中国二十冶集团有限公司 A kind of holing with slurry wall protection cast-in-place pile construction method
CN108149678A (en) * 2018-01-12 2018-06-12 中铁三局集团有限公司 A kind of loess retaining wall does the construction method of operation pore-creating filling pile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487252A (en) * 2009-02-13 2009-07-22 中建八局第一建设有限公司 Construction process of cast-in-situ bored pile
CN104831708A (en) * 2015-03-20 2015-08-12 深圳市工勘岩土集团有限公司 Foundation excavation retaining and protecting cast-in-situ bored pile construction method and equipment thereof
CN107524142A (en) * 2017-09-20 2017-12-29 中国二十冶集团有限公司 A kind of holing with slurry wall protection cast-in-place pile construction method
CN108149678A (en) * 2018-01-12 2018-06-12 中铁三局集团有限公司 A kind of loess retaining wall does the construction method of operation pore-creating filling pile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王常青: "钻孔预制复合桩设计及实例", 《低温建筑技术》 *

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Application publication date: 20190101