CN203530962U - Structure of reinforcement cage of bored pile - Google Patents
Structure of reinforcement cage of bored pile Download PDFInfo
- Publication number
- CN203530962U CN203530962U CN201320587918.1U CN201320587918U CN203530962U CN 203530962 U CN203530962 U CN 203530962U CN 201320587918 U CN201320587918 U CN 201320587918U CN 203530962 U CN203530962 U CN 203530962U
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- China
- Prior art keywords
- pile
- grouting pipe
- stake
- grouting
- reinforcement cage
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- Expired - Fee Related
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Abstract
The utility model discloses a structure of a reinforcement cage of a bored pile. Pile end grouting pipes which extend from the top of the reinforcement cage and outside the bottom end of the reinforcement cage are prefabricated on the side of the reinforcement cage, the bottom end of each pile end grouting pipe is provided with a pile end single-way grouting valve, pile side grouting pipes which extend from the top of the reinforcement cage to different elevation positions of the side face of the reinforcement cage are further fabricated on the side of the reinforcement cage, the bottom end of each pile side grouting pipe is connected with an annular pile side grouting device surrounding the reinforcement cage, and pile side one-way grouting valves facing the outside of the pile are distributed on the annular pile side grouting devices. According to the structure of the reinforcement cage of the bored pile, both pile end grouting and pile side grouting can be carried out, so that pile bottom sediment and pile side slurry cakes are eliminated, and the strength of pile bottom and pile side soil is enhanced; thus, bonding force of pile periphery soil is improved, the strength of the pile body is reinforced, the load-bearing capability of the bored pile is improved finally, and the settlement amount of the pile body is reduced.
Description
Technical field
The utility model belongs to building pile foundation technical field, relates in particular to a kind of borehole filling pile cage of reinforcement structure.
Background technology
The bored pile of single technique, due to the inherent shortcoming of pore-forming technique, easily causes the hidden danger such as pile bottom sediment and all mud films of stake.For this reason, there is afterwards human hair to understand the pile end grouting construction method of bored pile, when this construction method is pile at the bottom of stake preset grouting pipeline and grouting device, after pile body reaches some strength, by grouting pipeline, utilize high-pressure injection pump pressure injection to take the slurries that cement is host, sediment at the bottom of hole is cured, thereby eliminate traditional construction process of bored concrete pile inherent shortcoming, reach the bearing capacity, the minimizing settling amount that improve stake.But the reinforcement cage structure of this construction method application only can carry out slip casting at stake end, cannot eliminate a side mud film, the intensity of the stake side soil body cannot improve.
Utility model content
Technical problem to be solved in the utility model is to provide the borehole filling pile cage of reinforcement structure that can eliminate a side mud film, improve stake side soil strength, the deficiency existing to overcome prior art.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of borehole filling pile cage of reinforcement structure, in reinforcing cage side, be prefabricated with the pile end grouting pipe that extends beyond reinforcing cage bottom from top, the bottom of pile end grouting pipe is provided with stake end unidirectional grout valve, it is characterized in that: described reinforcing cage side is also prefabricated with the stake side Grouting Pipe that extends to different level position, reinforcing cage side from top, described stake side Grouting Pipe bottom is connected with the ring-like stake side slurry casting machine around reinforcing cage, is distributed with the stake side unidirectional grout valve of direction outside stake on described ring-like stake side slurry casting machine.
Described stake end unidirectional grout valve is for process four groups of spray-holes in pile end grouting pipe bottom, and every group at four spray-holes of same cross-sectional distribution, cross section spacing 100mm, and described spray-hole in advance pipe dresses outside shutoff.
In the utility model specific embodiment, pile end grouting pipe has two, is arranged symmetrically on reinforcing cage.
Described pile end grouting pipe and stake side Grouting Pipe are iron pipe; Described ring-like stake side slurry casting machine is ring-like high pressure resistant flexible pipe.
Adopt technique scheme, borehole filling pile cage of reinforcement structure of the present utility model not only can pile end grouting but also can the slip casting of stake side, pile bottom sediment and stake side mud skin are eliminated, at the bottom of making, the intensity of the stake side soil body is all improved, thereby improve the adhesion stress of stake week soil, make pile strength obtain reinforcement, finally improved the bearing capacity of bored pile and reduced the settling amount of pile body.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
Fig. 1 is that pile end grouting pipe and stake side Grouting Pipe are arranged schematic diagram at reinforcing cage in reinforcing cage short transverse;
Fig. 2 is for being pile end grouting pipe and stake side Grouting Pipe layout schematic diagram at circumferencial direction on reinforcing cage.
The specific embodiment
As depicted in figs. 1 and 2, borehole filling pile cage of reinforcement structure of the present utility model, reinforcing cage 100 sides are prefabricated with the pile end grouting pipe 200 that extends beyond reinforcing cage bottom from top, the end unidirectional grout valve that lays out pile is divided in the bottom of pile end grouting pipe 200, and the stake side Grouting Pipe 300 that extends to reinforcing cage 200 different level positions, side from top, stake side Grouting Pipe bottom is connected with the ring-like stake side slurry casting machine around reinforcing cage, is distributed with the stake side unidirectional grout valve of direction outside stake on ring-like stake side slurry casting machine.Pile end grouting pipe 200 exceeds position, A place in reinforcing cage 100 bottom 400mm(figure).
In the present embodiment, pile end grouting pipe 100 has two, is arranged symmetrically on reinforcing cage 100.Stake side Grouting Pipe 300 also has two, an extend to-30m absolute altitude position (position, B place in Fig. 1), another root extend to-21mm absolute altitude position (position, C place in Fig. 1).
Stake holds unidirectional grout valve for to process four groups of spray-holes in pile end grouting pipe bottom, every group of spray-hole at four diameter 8mm of same cross-sectional distribution, and cross section spacing 100mm, carries out pipe with film in advance to spray-hole and dresses outside, and blocks described spray-hole.Ring-like stake side slurry casting machine is ring-like high pressure resistant flexible pipe, is distributed with 3 stake side unidirectional grout valves on high-pressure hose.
Apply the borehole filling pile cage of reinforcement structure of the present utility model filling post construction of holing as follows:
Reinforcing cage is inserted after soil body boring, reinforcing cage is carried out to concreting; Build and pile end grouting pipe and a stake side Grouting Pipe were carried out respectively to clear water splitting in rear 7-8 hour pile end grouting pipe and a stake side Grouting Pipe are connected.
When hand-hole is interior under Grouting Pipe, should in Grouting Pipe, carry out water filling test, in pipe, pour into after water, upwards more than hoisting grouting pipe 5m, in pipe, 5 minutes kind left and right of water level do not decline, illustrate that its sealing performance can reach requirement, otherwise, should check in time joint sealing, what sealing performance was not met the demands does over again in time.To being exposed at the madjack pipe in aperture (position, D place in Fig. 1), must tighten with plug, prevent that foreign material and mud from falling in madjack pipe, guarantee that pipeline is unimpeded.During descending reinforcing cage, must slowly transfer, forbid brute force to be impacted.
The water yield of clear water splitting is unsuitable excessive, and pressure is controlled at 1.5-2MPa, and splitting stops water filling after connecting.
3-7 days after concreting, after concrete setting, utilizes mudjack first to stake side Grouting Pipe injected water mud, then carries out cement injection slurry to pile end grouting pipe.Grouting pressure is controlled at 1.5-1.8MPa, and flow rate of grouting is controlled at 30-40L/min, and cement paste is infiltrated in surrounding soil naturally, when the pump pressure value of mudjack reaches 2Mpa and holds lotus 3min, stops injected water mud.
Wherein, to stake side Grouting Pipe injected water mud, be first to the stake side Grouting Pipe injected water mud that extends to low absolute altitude position (30m absolute altitude position), then to the stake side Grouting Pipe injected water mud that extends to high standard high position (21m absolute altitude position).
The water/binder ratio of controlling cement paste is 0.55, and cement paste mixing time is no less than 2 minutes, and cement paste re-uses after must using the filter screen of 3mm * 3mm to filter.
Mud jacking is controlled and is adopted dual control standard: the grouting amount (cement consumption) of take is controlled as main, and it is auxiliary that grouting pressure is controlled.When reaching design grouting amount, mud jacking amount stops mud jacking; When reaching 2Mpa and hold lotus 3min, pump pressure value stops mud jacking.
By above-mentioned detailed introduction, can find out, borehole filling pile cage of reinforcement structure of the present utility model not only can pile end grouting but also can the slip casting of stake side, pile bottom sediment and stake side mud skin are eliminated, at the bottom of making, the intensity of the stake side soil body is all improved, thereby an adhesion stress that improves stake week soil, makes pile strength obtain reinforcement, finally improved the bearing capacity of bored pile and reduced the settling amount of pile body.
But; those skilled in the art will recognize that; the above-mentioned specific embodiment is exemplary; in order better to make those skilled in the art can understand this patent; can not be interpreted as it is the restriction to this patent protection domain; so long as according to spirit that this patent discloses do be anyly equal to change or modify, all fall into the scope of this patent protection.
Claims (4)
1. a borehole filling pile cage of reinforcement structure, in reinforcing cage side, be prefabricated with the pile end grouting pipe that extends beyond reinforcing cage bottom from top, the bottom of pile end grouting pipe is provided with stake end unidirectional grout valve, it is characterized in that: described reinforcing cage side is also prefabricated with the stake side Grouting Pipe that extends to different level position, reinforcing cage side from top, described stake side Grouting Pipe bottom is connected with the ring-like stake side slurry casting machine around reinforcing cage, is distributed with the stake side unidirectional grout valve of direction outside stake on described ring-like stake side slurry casting machine.
2. borehole filling pile cage of reinforcement structure according to claim 1, it is characterized in that: described stake end unidirectional grout valve is for processing four groups of spray-holes in pile end grouting pipe bottom, every group at four spray-holes of same cross-sectional distribution, cross section spacing 100mm, and described spray-hole in advance pipe dresses outside shutoff.
3. borehole filling pile cage of reinforcement structure according to claim 1, is characterized in that: pile end grouting pipe has two, is arranged symmetrically on reinforcing cage.
4. borehole filling pile cage of reinforcement structure according to claim 1, is characterized in that: described pile end grouting pipe and stake side Grouting Pipe are iron pipe; Described ring-like stake side slurry casting machine is ring-like high pressure resistant flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587918.1U CN203530962U (en) | 2013-09-23 | 2013-09-23 | Structure of reinforcement cage of bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587918.1U CN203530962U (en) | 2013-09-23 | 2013-09-23 | Structure of reinforcement cage of bored pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203530962U true CN203530962U (en) | 2014-04-09 |
Family
ID=50417187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320587918.1U Expired - Fee Related CN203530962U (en) | 2013-09-23 | 2013-09-23 | Structure of reinforcement cage of bored pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203530962U (en) |
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2013
- 2013-09-23 CN CN201320587918.1U patent/CN203530962U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION CO. Free format text: FORMER OWNER: SHANGHAI BRANCH OF CHINESE ARCHITECTURE CO., LTD. Effective date: 20140403 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200434 YANGPU, SHANGHAI TO: 200120 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140403 Address after: 200120 Pudong New Area Century Avenue, Shanghai, No. 27, layer 1568 Patentee after: CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION Co.,Ltd. Address before: 200434 Shanghai city Yangpu District binlu No. 18 room 2201 Patentee before: Shanghai Branch, China State Construction Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20210923 |