CN205259188U - Miniature pressure -bearing stake of bag pocket type of controllable slip casting scope - Google Patents

Miniature pressure -bearing stake of bag pocket type of controllable slip casting scope Download PDF

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Publication number
CN205259188U
CN205259188U CN201520805628.9U CN201520805628U CN205259188U CN 205259188 U CN205259188 U CN 205259188U CN 201520805628 U CN201520805628 U CN 201520805628U CN 205259188 U CN205259188 U CN 205259188U
Authority
CN
China
Prior art keywords
slip casting
pipe
bag
steel reinforcement
reinforcement cage
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.)
Expired - Fee Related
Application number
CN201520805628.9U
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Chinese (zh)
Inventor
吴顺川
高永涛
郭超
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.)
Beijing University of Technology
University of Science and Technology Beijing USTB
Original Assignee
University of Science and Technology Beijing USTB
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 University of Science and Technology Beijing USTB filed Critical University of Science and Technology Beijing USTB
Priority to CN201520805628.9U priority Critical patent/CN205259188U/en
Application granted granted Critical
Publication of CN205259188U publication Critical patent/CN205259188U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a miniature pressure -bearing stake of bag pocket type of controllable slip casting scope belongs to structure repair technology field. This pressure -bearing stake includes sleeve pipe, steel reinforcement cage, slip casting pipe, grout outlet, blast pipe, bag and free section, and steel reinforcement cage, slip casting pipe, grout outlet, blast pipe, bag and free section lie in set intraduct, and slip casting pipe and blast pipe lie in the steel reinforcement cage opposite side outside respectively, and the grout outlet lies in slip casting pipe lower part, and the bag bag is arranged in pressure -bearing stake lower part, and the parcel is outside at the steel reinforcement cage, and free section lies in pressure -bearing stake upper portion. This pressure -bearing stake is through pouring into concrete grout into to the bag bag to guarantee that injection -production pipe column packs and spreads in the restricted portion, with the effective contact area of increase pile body with the soil body, improve the bearing capacity of stake. Advantages such as this method volume of having slip casting, the slip casting scope is controllable, the thick liquid effectively spreads, slip casting is respond well, slip casting speed is easily controlled.

Description

A kind of miniature pressure bearing pile of bag type paste of controlled range of grouting
Technical field
The utility model relates to the technical field such as structure repair, foundation stabilization in the field such as civil engineering, traffic engineering, refers to especially a kind of miniature pressure bearing pile of bag type paste of controlled range of grouting.
Background technology
In recent years, along with the development of Chinese national economy, the speed of infrastructure construction is constantly accelerated, and corresponding geotechnical engineering problems also constantly occurs. Wherein, produce the recovery technique of the series of problems such as cracking, crooked, sedimentation increase due to the differential settlement of ground be a difficult problem to building always. Conventional treatment facility has anchor pole, stake etc. Miniature pressure bearing pile is compared with conventional cast-in-situ bored pile, have bearing capacity compared with high, construction site is little, to the feature such as soil layer strong adaptability, arrangement form be flexible, be often applied in the structure repair, Soft Ground of building. In the Geotechnical Engineering such as anchor pole, stake work progress, the control problem of slip casting is insoluble problem in engineering reality always. At present, bag type paste anchor pole application is more extensive, and efficiently solves slip casting control problem, but generally pouch grouted anchor bar all as a kind of pulling force bearing structure, and pile body is as a kind of pressure-bearing type structure, it adopts pouch mode control range of grouting to there is not yet report.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of miniature pressure bearing pile of bag type paste of controlled range of grouting, while adopting conventional method to carry out pile end grouting to overcome, be difficult to ensure that slurries effectively spread with grouting amount and are difficult to control in limited range, slip casting effect is difficult to the defect ensureing.
This pressure bearing pile comprises sleeve pipe, steel reinforcement cage, Grouting Pipe, grout outlet, blast pipe, pouch and free segment, sleeve pipe is pressure bearing pile most external structure, steel reinforcement cage outer setting Grouting Pipe and blast pipe, and Grouting Pipe bottom arranges grout outlet, pouch is wrapped in steel reinforcement cage outside, and pressure bearing pile top is free segment.
Wherein, casing length is greater than length of reinforcing cage, and length of reinforcing cage is greater than Grouting Pipe length, and steel reinforcement cage is greater than blast pipe length, and freedom length is not more than 1/3rd of pressure bearing pile length; Pouch is cluster high strength fabric pouch, makes miniature pressure bearing pile slurries in slip casting process can wrap up well pile body, can arbitrarily not spread and cause the restive of slurries waste and grouting amount to the soil body; The single application of pouch or combined type application; Free segment can adopt the form of construction work of slip casting or not slip casting.
The technological process of the utility model construction is:
(1) smooth location, lays workbench;
(2) drilling and forming hole;
(3) lay steel reinforcement cage and Grouting Pipe;
(4) once grouting;
(5) secondary grouting-by Grouting Pipe is to pouch slip casting;
(6) envelope stake;
(7) check pile quality.
The beneficial effect of technique scheme of the present utility model is as follows:
The utility model, compared with original normal miniature stake, can accurately limit slip casting fill area, has overcome conventional grouting method and has been difficult to the defect that ensures that slurries effectively spread in controlled range. By smearing lubricant medium as free segment at steel reinforcement cage top binding polybag, the free segment of pile body does not transmit shearing force to the periphery soil body, thereby makes upper load to deep soil transmission, to prevent that building foundation from affecting adversely.
Brief description of the drawings
Fig. 1 is the structural representation of the miniature pressure bearing pile of bag type paste of controlled range of grouting of the present utility model;
Fig. 2 is A-A ' profile of Fig. 1;
Fig. 3 is B-B ' profile of Fig. 1;
Fig. 4 is C-C ' profile of Fig. 1;
Fig. 5 is the construction process figure that adopts the miniature pressure bearing pile of bag type paste of this controlled range of grouting;
Fig. 6 is the miniature pressure bearing pile construction of the bag type paste schematic diagram of the controlled range of grouting of actual enforcement.
Wherein: 1-workbench; 2-sleeve pipe; 3-steel reinforcement cage; 4-Grouting Pipe; 5-grout outlet; 6-blast pipe; 7-pouch; 8-free segment.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
When the utility model carries out pile end grouting for existing conventional method, be difficult to ensure that slurries effectively spread with grouting amount and are difficult to control in limited range, slip casting effect is difficult to the defect ensureing, a kind of miniature pressure bearing pile of bag type paste of controlled range of grouting is provided.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, this miniature pressure bearing pile comprises sleeve pipe 2, steel reinforcement cage 3, Grouting Pipe 4, grout outlet 5, blast pipe 6, pouch 7 and free segment 8, sleeve pipe 2 is pressure bearing pile most external structures, steel reinforcement cage 3 outer setting Grouting Pipe 4 and blast pipe 6, Grouting Pipe 4 bottoms arrange grout outlet 5, pouch 7 is wrapped in steel reinforcement cage 3 outsides, and pressure bearing pile top is free segment 8.
Adopt flow process shown in Fig. 5, in practical embodiments, consolidation process is carried out in certain building foundation, as shown in Figure 6, the miniature pressure bearing pile of bag type paste of a kind of controlled range of grouting that employing the utility model provides. For making building foundation reach bearing capacity and settlement requirement, adopt a kind of squeeze into miniature pressure bearing pile of bag type paste of controlled range of grouting on the original strip footing base plate of building method, form mixed base. Wherein, in every miniature pressure bearing pile pile body, bottom arranges a pouch 7, increases basis and soil body contact area, improves foundation bearing capacity. Pile body top arranges free segment 8 simultaneously, makes building load to deep soil transmission, to prevent that surface buildings basis from affecting adversely.
Specific construction flow process is as follows:
(1) on workbench 1, determine pile driving position mark;
(2) hole to base plate and get through in mark;
(3) drilling through base plate place utilization casing pipe hole forming method pore-forming;
(4) extract sleeve pipe 2 and place steel reinforcement cage 3 and supporting pouch 7, Grouting Pipe 4;
(5) outside pouch 7, carry out once grouting pile;
(6) in pouch 7, carry out secondary grouting, form the miniature bearing pile of bag type paste;
(7) check pile quality, envelope stake.
The present embodiment is only the concrete form of implementation of one of the present utility model, wherein in boring, bore forming method, pile body section form, pouch quantity, pile body, number of steel bars and arrangement form are determined according to conditions such as concrete geological conditions, requirement for bearing capacity and stressing conditions, and the utility model does not do concrete restriction.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (5)

1. the miniature pressure bearing pile of the bag type paste of a controlled range of grouting, it is characterized in that: comprise sleeve pipe (2), steel reinforcement cage (3), Grouting Pipe (4), grout outlet (5), blast pipe (6), pouch (7) and free segment (8), sleeve pipe (2) is pressure bearing pile most external structure, steel reinforcement cage (3) outer setting Grouting Pipe (4) and blast pipe (6), Grouting Pipe (4) bottom arranges grout outlet (5), pouch (7) is wrapped in steel reinforcement cage (3) outside, and pressure bearing pile top is free segment (8).
2. the miniature pressure bearing pile of the bag type paste of controlled range of grouting according to claim 1, it is characterized in that: described sleeve pipe (2) length is greater than steel reinforcement cage (3) length, steel reinforcement cage (3) length is greater than Grouting Pipe (4) length, steel reinforcement cage (3) length is greater than blast pipe (6) length, and free segment (8) length is not more than 1/3rd of pressure bearing pile length.
3. the miniature pressure bearing pile of the bag type paste of controlled range of grouting according to claim 1, is characterized in that: described pouch (7) is cluster fabric pouch.
4. the miniature pressure bearing pile of the bag type paste of controlled range of grouting according to claim 1, is characterized in that: the single application of described pouch (7) or combined type application.
5. the miniature pressure bearing pile of the bag type paste of controlled range of grouting according to claim 1, is characterized in that: the interior slip casting of described free segment (8) or not slip casting.
CN201520805628.9U 2015-10-16 2015-10-16 Miniature pressure -bearing stake of bag pocket type of controllable slip casting scope Expired - Fee Related CN205259188U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520805628.9U CN205259188U (en) 2015-10-16 2015-10-16 Miniature pressure -bearing stake of bag pocket type of controllable slip casting scope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520805628.9U CN205259188U (en) 2015-10-16 2015-10-16 Miniature pressure -bearing stake of bag pocket type of controllable slip casting scope

Publications (1)

Publication Number Publication Date
CN205259188U true CN205259188U (en) 2016-05-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN205259188U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105297737A (en) * 2015-10-16 2016-02-03 北京科技大学 Grouting scope-controllable bag type micro bearing pile
CN113174927A (en) * 2021-03-31 2021-07-27 山东高速岩土科技有限公司 Reinforcement construction method of micro pile for soft soil foundation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105297737A (en) * 2015-10-16 2016-02-03 北京科技大学 Grouting scope-controllable bag type micro bearing pile
CN105297737B (en) * 2015-10-16 2017-11-17 北京科技大学 A kind of bag type paste miniature pressure bearing pile of controllable range of grouting
CN113174927A (en) * 2021-03-31 2021-07-27 山东高速岩土科技有限公司 Reinforcement construction method of micro pile for soft soil foundation

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160525

Termination date: 20181016

CF01 Termination of patent right due to non-payment of annual fee