CN104088285A - Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure - Google Patents

Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure Download PDF

Info

Publication number
CN104088285A
CN104088285A CN201410355584.4A CN201410355584A CN104088285A CN 104088285 A CN104088285 A CN 104088285A CN 201410355584 A CN201410355584 A CN 201410355584A CN 104088285 A CN104088285 A CN 104088285A
Authority
CN
China
Prior art keywords
construction
steel sleeve
cement mixing
concrete pile
pile
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
CN201410355584.4A
Other languages
Chinese (zh)
Inventor
吴恩
王军
华燕
刑利
陆晓玲
刘全林
宋伟民
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.)
Shanghai Strong Foundation Engineering Co Ltd
Original Assignee
Shanghai Strong Foundation Engineering 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 Shanghai Strong Foundation Engineering Co Ltd filed Critical Shanghai Strong Foundation Engineering Co Ltd
Priority to CN201410355584.4A priority Critical patent/CN104088285A/en
Publication of CN104088285A publication Critical patent/CN104088285A/en
Pending legal-status Critical Current

Links

Abstract

The invention provides a method for constructing a cement soil mixing pile and concrete pile meshed foundation pit supporting structure. Construction is carried out through a reinforced concrete pile special device. A steel sleeve of the special device can be accurately positioned; meanwhile, a soil body is cut by the steel sleeve, disturbance to surrounding pile bodies in the pile forming process is reduced, and the problems in the construction quality of the cement soil mixing pile and concrete pile meshed foundation pit supporting structure are effectively solved. The construction perpendicularity and the construction displacement of concrete piles are accurately controlled, the water stop effect on the pile meshed joint positions is guaranteed, and the method particularly solves the problems in the relation among the intensity of the pile bodies, the ages of the pile bodies and the construction time of the concrete piles after cement soil piles are constructed are solved.

Description

The construction method of cement mixing method and concrete pile interlock foundation pit supporting construction
Technical field
The present invention relates to foundation engineering technical field, specifically relate to the construction method of cement mixing method and concrete pile interlock foundation pit supporting construction in base pit engineering.
Background technology
Cement mixing method sealing adds row of bored piles and diaphragm wall for many years, in deep foundation pit support, is widely used.But because bored pile and cement mixing method are arranged side by side, and have gap between stake and stake, inter-pile soil body easily runs off, and impact keeps off soil and stagnant water effect, and construction area area is large.Although diaphragm wall can overcome above-mentioned defect, cost is too high.Cement mixing method and concrete pile interlock foundation pit supporting construction have solved this problem.
But the conventional construction difficulty of cement mixing method and concrete pile interlock foundation pit supporting construction is large, easily occurs quality problems, and this patent has solved this problem.
Summary of the invention
Technical problem to be solved by this invention is, overcomes problems of the prior art, and the construction method of cement mixing method and concrete pile interlock foundation pit supporting construction in base pit engineering is provided.
In order to address the above problem technical scheme of the present invention, be such:
The construction method of a kind of cement mixing method and concrete pile interlock foundation pit supporting construction, cement mixing method interval is arranged, between adjacent two cement mixing methods, be provided with concrete pile, between cement mixing method and concrete pile, interlock forms foundation pit supporting construction mutually, it is characterized in that, step is as follows:
1) adopt mixing pile machine interval construction cement mixing method,
2) between cement mixing method, adopt special equipment construction concrete pile, concrete pile and the adjacent mutual interlock of cement mixing method;
Described special equipment, comprises a pile frame, is provided with upper and lower two unit heads on pile frame, and upper unit head connects auger stem, and lower unit head connects steel sleeve, and auger stem enters in steel sleeve through lower unit head;
Concrete pile construction sequence is as follows:
A, between cement mixing method, mobile pile frame is by steel sleeve align piles position, lower drill steel sleeve pipe, to designated depth, is drilled into designated depth under auger stem;
B, on carry auger stem and simultaneously guncreting to stake top or on carry auger stem and fetch earth after concrete perfusion, formin concrete pile;
C, extract steel sleeve;
D, reinforcing cage is inserted to designated depth along plain concrete pile, form reinforced concrete pile;
E, repeat a, b, c, d all the other concrete piles of constructing successively.
Further, after a step, steel sleeve is separated with lower unit head.
Further, before d or c step, first remove stake top loosened soil laitance,
Further, in d step, use vibrator vibrated concrete.
Further, described steel sleeve lower end is provided with cutting edge or the tooth of cutting soil.
Further, described auger stem is contrary with steel sleeve direction of rotation.
Further, in a step, first lower boring rotated steel sleeve cutting soil, and rear lower brill auger stem takes out the soil body in steel sleeve.
Further, in a step, first bore down auger stem, rear lower brill rotation steel sleeve cutting soil, then auger stem takes out the soil body.
Further, in a step, steel sleeve and auger stem are with boring at present, and then auger stem takes out the soil body.
The construction method of another kind of cement mixing method and concrete pile interlock foundation pit supporting construction, cement mixing method interval is arranged, between adjacent two cement mixing methods, be provided with concrete pile, between cement mixing method and concrete pile, interlock forms foundation pit supporting construction mutually, and step is as follows:
1) adopt mixing pile machine interval construction cement mixing method,
2) between cement mixing method, adopt special equipment construction concrete pile, concrete pile and the adjacent mutual interlock of cement mixing method;
Described special equipment, comprises a pile frame, is provided with upper and lower two unit heads on pile frame, and upper unit head connects auger stem, and lower unit head connects steel sleeve, and auger stem enters in steel sleeve through lower unit head;
Concrete pile construction sequence is as follows:
A, between cement mixing method, mobile pile frame is steel sleeve align piles position, lower drill steel sleeve pipe, to designated depth, takes out the soil in steel sleeve with auger stem;
B, reinforcing cage is inserted to designated depth along steel sleeve center;
C, concrete perfusion, to stake top, form reinforced concrete pile;
D, extract steel sleeve;
E, repeat a, b, c, d all the other concrete piles of constructing successively.
Further, after a step, steel sleeve is separated with lower unit head.
Further, after c step, use vibrator vibrated concrete.
Further, in a step, first lower boring rotated steel sleeve cutting soil, and rear lower brill auger stem takes out the soil body in steel sleeve.
Further, in a step, first bore down auger stem, rear lower brill rotation steel sleeve cutting soil, then auger stem takes out the soil body.
Further, in a step, steel sleeve and auger stem are with boring at present, and then auger stem takes out the soil body.
Further, described steel sleeve lower end is provided with cutting edge or the tooth of cutting soil.
Further, described auger stem is contrary with steel sleeve direction of rotation.
Beneficial effect, the construction method of cement mixing method of the present invention and concrete pile interlock foundation pit supporting construction, adopt a special equipment with rotatable steel sleeve, lower drill steel sleeve pipe cutting soil can accurately be located, especially in the situation that soil layer soft or hard differs, be difficult for tilting, be difficult for off normal, verticality is easy to control, lower end is with the steel sleeve cutting soil of cutting edge or tooth simultaneously, reduce in work progress the disturbance of cement soil pile around, in the high silt soil strata of water content, steel sleeve plays and surrounding soil buffer action especially, be convenient to concrete pouring construction.In this method, adopt extract steel sleeve after insert reinforcing cage, the soil body gap producing in the time of can effectively filling up steel sleeve while inserting under reinforcing cage and extract, pile is closely knit.The special equipment adopting is coaxially constructed steel sleeve and drilling rod, and speed of application is fast, quality good, saves cost.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention in detail;
Fig. 1 special equipment schematic diagram of the present invention.
Fig. 2 cement mixing method of the present invention and concrete pile interlock foundation pit supporting construction schematic diagram.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, in this method, use a special equipment, comprise a pile frame 1, on pile frame, be provided with upper and lower two unit heads 4,5, upper unit head 4 connects auger stem 3 and drives its rotary drilling, lower unit head 5 connects steel sleeve 2 and drives its rotary drilling, and auger stem 3 enters in steel sleeve 2 through hollow lower unit head 5.Described auger stem 3 is the drilling rod with helical blade.Described steel sleeve 2 lower ends are provided with cutting edge or the tooth of cutting soil.During construction, described auger stem 3 is contrary with steel sleeve 2 direction of rotation.
Embodiment 1:
Referring to Fig. 2, cement mixing method described in the present embodiment and concrete pile interlock foundation pit supporting construction are: cement mixing method 11 and concrete pile 12 are set in foundation ditch periphery, cement mixing method 11 intervals are arranged, between adjacent two cement mixing methods 11, be provided with concrete pile 12, interlock mutually between cement mixing method 11 and concrete pile 12.In described concrete pile 12, be provided with reinforcing cage.
A construction method for cement mixing method and concrete pile interlock foundation pit supporting construction, step is as follows:
1) along the periphery of foundation ditch, adopt the construction of n axle cement-soil mixing pile machine to form many group cement mixing methods, every group of cement mixing method is comprised of the cement mixing method of n root space, wherein n >=1;
2) between cement mixing method, adopt special equipment construction concrete pile, concrete pile and the adjacent mutual interlock of cement mixing method;
A, between cement mixing method, determine the central point of concrete pile, mobile pile frame is by steel sleeve align piles position central point, and lower drill steel sleeve pipe 2, to designated depth, takes out the soil in steel sleeve 2 with auger stem 3; Then steel sleeve 2 is separated with 5 of lower power, steel sleeve 2 is stayed in the soil body;
B, on carry auger stem and simultaneously guncreting to stake top, formin concrete pile;
C, extract steel sleeve;
D, reinforcing cage is inserted to designated depth along plain concrete pile center, form reinforced concrete pile; After reinforced concrete pile forms, adopt in time vibrator to vibrate, vibrate and can make cement grout infiltrate in the gap of cement earth pile, when improving concrete pile body compactness, be combined closely with cement earth pile, cement earth pile and concrete pile seam crossing stagnant water effect are better; The process of vibrating can adopt repeatedly vibrates;
E, repeat a, b, c, d all the other concrete piles of constructing successively.
Before d or c step, first remove stake top loosened soil laitance;
Step a) in, the first lower rotation steel sleeve cutting soil that bores, rear lower brill and on carry auger stem the steel sleeve soil body taken out.
Or step a) in, the first lower auger stem that bores, rear lower brill rotation steel sleeve, then auger stem takes out the soil body.
Or step a) in, steel sleeve and auger stem are with boring at present, then auger stem takes out the soil body.
While constructing concrete pile in the situation that this method mainly having some strength after silt, clay and cement-soil stirring pile construction, adopt.
Embodiment 2:
The construction method of another kind of cement mixing method and concrete pile interlock foundation pit supporting construction, step is as follows:
1) adopt mixing pile machine interval construction cement mixing method,
2) between cement mixing method, adopt special equipment construction concrete pile, concrete pile and the adjacent mutual interlock of cement mixing method;
A, between cement mixing method, determine the central point of concrete pile, lower drill steel sleeve pipe 2, to designated depth, takes out the soil in steel sleeve 2 with auger stem 3; Then steel sleeve 2 is separated with 5 of lower power, steel sleeve 2 is stayed in the soil body;
B, reinforcing cage is inserted to designated depth along steel sleeve 2 centers.
C, concrete perfusion, to stake top, form reinforced concrete pile;
D, extract steel sleeve 2;
E, repeat a, b, c, d all the other concrete piles of constructing successively.
Step a) in, the first lower rotation steel sleeve cutting soil that bores, rear lower brill and on carry auger stem the steel sleeve soil body taken out.
Or step a) in, the first lower auger stem that bores, rear lower brill rotation steel sleeve, then auger stem takes out the soil body.
Or step a) in, steel sleeve and auger stem are with boring at present, then auger stem takes out the soil body.
All the other are with embodiment 1.
Method described in the present embodiment be mainly used in silt soil strata that water content is high and the situation such as the cement-soil stirring pile construction time is long, cement soil pile intensity is lower under concrete pile construction time adopt.
The construction method of cement mixing method of the present invention and concrete pile interlock foundation pit supporting construction, adopt a special equipment with rotatable steel sleeve, lower drill steel sleeve pipe cutting soil can accurately be located, especially in the situation that soil layer soft or hard differs, be difficult for, be difficult for off normal, verticality is easy to control, lower end is with the steel sleeve cutting soil of cutting edge or tooth simultaneously, reduce in work progress the disturbance of cement soil pile around, in the high silt soil strata of water content, steel sleeve plays and surrounding soil buffer action especially, is convenient to concrete pouring construction.In this method, adopt extract steel sleeve after insert reinforcing cage, the soil body gap producing in the time of can effectively filling up steel sleeve while inserting under reinforcing cage and extract, pile is closely knit.The special equipment adopting is coaxially constructed steel sleeve and drilling rod, and speed of application is fast, quality good, saves cost.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of patent of the present invention is defined by appending claims and equivalent thereof.

Claims (17)

1. the construction method of a cement mixing method and concrete pile interlock foundation pit supporting construction, cement mixing method interval is arranged, between adjacent two cement mixing methods, be provided with concrete pile, between cement mixing method and concrete pile, interlock forms foundation pit supporting construction mutually, it is characterized in that, step is as follows:
1) adopt mixing pile machine interval construction cement mixing method,
2) between cement mixing method, adopt special equipment construction concrete pile, concrete pile and the adjacent mutual interlock of cement mixing method;
Described special equipment, comprises a pile frame, is provided with upper and lower two unit heads on pile frame, and upper unit head connects auger stem, and lower unit head connects steel sleeve, and auger stem enters in steel sleeve through lower unit head;
Concrete pile construction sequence is as follows:
A, between cement mixing method, mobile pile frame is by steel sleeve align piles position, lower drill steel sleeve pipe, to designated depth, is drilled into designated depth under auger stem;
B, on carry auger stem and simultaneously guncreting to stake top or on carry auger stem and fetch earth after concrete perfusion, formin concrete pile;
C, extract steel sleeve;
D, reinforcing cage is inserted to designated depth along plain concrete pile center, form reinforced concrete pile;
E, repeat a, b, c, d all the other concrete piles of constructing successively.
2. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, after a step, steel sleeve is separated with lower unit head.
3. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, before d or c step, first removes stake top loosened soil laitance.
4. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, in d step, uses vibrator vibrated concrete.
5. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, described steel sleeve lower end is provided with cutting edge or the tooth of cutting soil.
6. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, described auger stem is contrary with steel sleeve direction of rotation.
7. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, in a step, first lower boring rotated steel sleeve cutting soil, and rear lower brill auger stem also takes out the soil body in steel sleeve.
8. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, in a step, first bores down auger stem, rear lower brill rotation steel sleeve cutting soil, and then auger stem takes out the soil body.
9. the construction method of a kind of cement mixing method according to claim 1 and concrete pile interlock foundation pit supporting construction, is characterized in that, in a step, steel sleeve and auger stem are with boring at present, and then auger stem takes out the soil body.
10. the construction method of a cement mixing method and concrete pile interlock foundation pit supporting construction, cement mixing method interval is arranged, between adjacent two cement mixing methods, be provided with concrete pile, between cement mixing method and concrete pile, interlock forms foundation pit supporting construction mutually, it is characterized in that, step is as follows:
1) adopt mixing pile machine interval construction cement mixing method,
2) between cement mixing method, adopt special equipment construction concrete pile, concrete pile and the adjacent mutual interlock of cement mixing method;
Described special equipment, comprises a pile frame, is provided with upper and lower two unit heads on pile frame, and upper unit head connects auger stem, and lower unit head connects steel sleeve, and auger stem enters in steel sleeve through lower unit head;
Concrete pile construction sequence is as follows:
A, between cement mixing method, mobile pile frame is steel sleeve align piles position, lower drill steel sleeve pipe, to designated depth, takes out the soil in steel sleeve with auger stem;
B, reinforcing cage is inserted to designated depth along steel sleeve center;
C, concrete perfusion, to stake top, form reinforced concrete pile;
D, extract steel sleeve;
E, repeat a, b, c, d all the other concrete piles of constructing successively.
The construction method of 11. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, after a step, steel sleeve is separated with lower unit head.
The construction method of 12. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, in a step, first lower boring rotated steel sleeve cutting soil, and rear lower brill auger stem also takes out the soil body in steel sleeve.
The construction method of 13. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, in a step, first bores down auger stem, rear lower brill rotation steel sleeve cutting soil, and then auger stem takes out the soil body.
The construction method of 14. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, in a step, steel sleeve and auger stem are with boring at present, and then auger stem takes out the soil body.
The construction method of 15. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, further, before d or c step, first removes stake top loosened soil laitance.
The construction method of 16. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, described steel sleeve lower end is provided with cutting edge or the tooth of cutting soil.
The construction method of 17. a kind of cement mixing methods according to claim 10 and concrete pile interlock foundation pit supporting construction, is characterized in that, described auger stem is contrary with steel sleeve direction of rotation.
CN201410355584.4A 2014-07-24 2014-07-24 Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure Pending CN104088285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410355584.4A CN104088285A (en) 2014-07-24 2014-07-24 Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410355584.4A CN104088285A (en) 2014-07-24 2014-07-24 Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure

Publications (1)

Publication Number Publication Date
CN104088285A true CN104088285A (en) 2014-10-08

Family

ID=51636035

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410355584.4A Pending CN104088285A (en) 2014-07-24 2014-07-24 Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure

Country Status (1)

Country Link
CN (1) CN104088285A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104480947A (en) * 2014-11-24 2015-04-01 江西中恒岩土工程技术有限公司 Construction method of prestress cast-in-place pile and soil cement pile engagement support
CN104863120A (en) * 2015-05-13 2015-08-26 中国建筑第八工程局有限公司 Occlusive pile construction method and prefabricated occlusive piles used for method
CN105569560A (en) * 2016-01-25 2016-05-11 宁波鸿晨建设有限公司 Full casing long-spiral bored pile machine and method of using same for construction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1127819A (en) * 1995-09-15 1996-07-31 孙新河 Internal thread bored and cast-in-place pile series and construction method and equipment thereof
JPH08284159A (en) * 1995-04-10 1996-10-29 Nippon Steel Corp Connection structure of pile head
CN101509254A (en) * 2009-03-09 2009-08-19 天津市建工工程总承包有限公司 Steel reinforced concrete filling pile and cement stirring pile meshing engagement type foundation pit support construction method
CN102660957A (en) * 2012-05-31 2012-09-12 中国二十二冶集团有限公司 Foundation pit supporting construction method for soft soil zone
CN103161157A (en) * 2013-03-27 2013-06-19 孔超 Cast-in-place pile capable of conducting tube sinking and rotary excavating earth borrowing synchronously of full pile long steel pipe dado

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08284159A (en) * 1995-04-10 1996-10-29 Nippon Steel Corp Connection structure of pile head
CN1127819A (en) * 1995-09-15 1996-07-31 孙新河 Internal thread bored and cast-in-place pile series and construction method and equipment thereof
CN101509254A (en) * 2009-03-09 2009-08-19 天津市建工工程总承包有限公司 Steel reinforced concrete filling pile and cement stirring pile meshing engagement type foundation pit support construction method
CN102660957A (en) * 2012-05-31 2012-09-12 中国二十二冶集团有限公司 Foundation pit supporting construction method for soft soil zone
CN103161157A (en) * 2013-03-27 2013-06-19 孔超 Cast-in-place pile capable of conducting tube sinking and rotary excavating earth borrowing synchronously of full pile long steel pipe dado

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104480947A (en) * 2014-11-24 2015-04-01 江西中恒岩土工程技术有限公司 Construction method of prestress cast-in-place pile and soil cement pile engagement support
CN104863120A (en) * 2015-05-13 2015-08-26 中国建筑第八工程局有限公司 Occlusive pile construction method and prefabricated occlusive piles used for method
CN105569560A (en) * 2016-01-25 2016-05-11 宁波鸿晨建设有限公司 Full casing long-spiral bored pile machine and method of using same for construction
CN105569560B (en) * 2016-01-25 2018-08-24 浙江鸿晨建设有限公司 A full set of tubular type long auger stake machine and the method for utilizing the ram machine construction

Similar Documents

Publication Publication Date Title
CN104153358A (en) Multi-row and multi-shaft cemented soil mixing pile drilling machine
CN105649012B (en) Upper-soft lower-hard ground subway station building enclosure drilled pile construction method
CN104088285A (en) Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure
CN103821141A (en) Thread pile construction process
CN104763345A (en) Construction device and method for building foundation
CN107339122B (en) Construction method for treating goaf by steel pipe column
CN103806840A (en) One-way spiral half soil compaction drill bit and one-way spiral half soil compaction pile construction technology
CN204000852U (en) Many row's multi-shaft cement agitation pile rigs
JP2013147933A (en) Earth retaining wall construction method, cast-in-place pile construction method, earth retaining wall, and cast-in-place pile
CN105019439A (en) Octagonal cemented soil pile-forming machine
CN104153357A (en) Construction method of composite pile
CN103912219A (en) Three-wing double-waist-hoop drill for cast-in-situ bored piles
CN108842802A (en) Piles in Karst Region base construction method
CN204252120U (en) The construction equipment of concrete pile
CN203769662U (en) One-way spiral semi-soil-squeezing drill bit
CN103774645A (en) Cemented soil and concrete composite pile and construction method thereof
US20150233075A1 (en) Full Displacement Pile Tip and Method for Use
CN105604001B (en) Drilling tool is stirred in the stake of stiff-core cement soil cylinder and the rotation of construction method and tubular
JP4831511B2 (en) Construction method of foundation pile
CN108193683B (en) Deep foundation treatment method and foundation structure
CN205918362U (en) Take drill bit of bore bit
JP2004218378A (en) Removing method for existing pile
JP4645091B2 (en) Expanded pile and construction method of the expanded pile
CN103882870A (en) Cement mixing pile and concrete pile meshing supporting structure and construction method
CN101338560A (en) Construction method for reinforced concrete pile

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Wu En

Inventor after: Wang Jun

Inventor after: Hua Yan

Inventor after: Xing Li

Inventor after: Lu Xiaoling

Inventor after: Liu Quanlin

Inventor after: Song Weimin

Inventor before: Wu En

Inventor before: Wang Jun

Inventor before: Hua Yan

Inventor before: Xing Li

Inventor before: Lu Xiaoling

Inventor before: Liu Quanlin

Inventor before: Song Weimin

C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20141008