CN102605770B - Post grouting device for filling pile and construction method - Google Patents
Post grouting device for filling pile and construction method Download PDFInfo
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Abstract
The invention provides a post grouting device for a filling pile. The post grouting device comprises a grouting pipe fixedly connected at the predetermined position of the outside part of a steel reinforcement cage, a plurality of grouting holes arranged on the side wall of the grouting pipe, a filling pipe extended down into the interior of the grouting pipe in the length direction of the grouting pipe, a pulp outlet which is arranged at the predetermined position of the lower side part of the grouting pipe and is aligned to the grouting holes, and at least one retractable or extendable rubber capsule which is arranged on the outer side wall of the filling pipe above the pulp outlet and is communicated with the side wall of the filling pipe. According to the structure, when pile holes with a plurality of supporting layers are grouted by the post grouting device, the grouting amount of each of the supporting layers can be effectively controlled to enable each of the supporting layers to meet the construction requirement so as to increase the bearing capacity of single pile. Meanwhile, the post grouting device is simple in structure. In addition, a plurality of rubber capsules have sealing effects such that the grouting operation of each of the supporting layers cannot be mutually influenced.
Description
Technical field
The present invention relates to bored concrete pile technology field, specifically, relate to a kind of post jacking device for castinplace pile.The invention still further relates to a kind of post grouting construction method for castinplace pile.
Background technology
At present, castinplace pile has been applied in the foundation construction fields such as construction work, bridge engineering, traffic engineering.Different types of castinplace pile has identical shortcoming: before stake holes concrete perfusion, first can pour into mud in stake holes and form mud off, colloidal particles in mud is infiltrated in the hole on stake holes wall top layer under the pressure of mud, form layer of mud skin, although mud skin can prevent stake holes from caving in, the side friction of soil layer and pile body can be reduced.In addition, the resistance of an end is caused to reduce at the sediment of stake holes congregate.Like this, the bearing capacity of pile body can greatly be reduced.
Traditional method that makes up is constructed by post-grouting technology, and the method for this technology is when the concrete poured into is close to curdled appearance, and to stake holes slip casting again, namely second time slip casting, improves the bearing capacity of pile body.
Publication number is that patent discloses of CN1540104A is a kind of for the post grouting construction technique at the bottom of Pile side, stake, this construction technology is the outside portion by many piles side Grouting Pipe and pile grouting pipe being connected to reinforcing cage, then utilizes many piles side Grouting Pipe and pile grouting pipe to carry out second time slip casting at the bottom of stake side and stake.
Although above-mentioned construction technology effectively can carry out effective slip casting at the bottom of the stake side of stake holes and stake, the bearing capacity at the bottom of can effectively improving, improve the side friction of pile body and soil, and then effectively improve bearing capacity of single pile.
But, for the stake holes having multilayer bearing stratum, construction requirement ensures that the intensity of every layer of bearing stratum and bearing capacity reach construction reference, existing construction technology carries out second time slip casting to it, the expection standard making the slip casting of each bearing stratum to be reached to construction can not be ensured, make bearing capacity of single pile not reach construction reference.In addition, need more different length slip casting around pile pipes, make grouting device structure more complicated like this.
So be necessary to be further improved above-mentioned post grouting construction technique, during to avoid above-mentioned post grouting construction technique for having the stake holes of multilayer bearing stratum, bearing capacity of single pile does not reach construction requirement, the baroque defect of grouting device.
Summary of the invention
The invention provides a kind of post jacking device for castinplace pile, when solving existing post grouting construction technique for having the stake holes of multilayer bearing stratum, can not ensure to make that construction expection standard is reached to the slip casting of each bearing stratum, bearing capacity of single pile do not reach construction reference, the baroque problem of grouting device.The present invention also provides a kind of post grouting construction method for castinplace pile, solves prior art problem.
For achieving the above object, the invention provides a kind of post jacking device for castinplace pile, it comprises: Grouting Pipe, is fixedly connected on the precalculated position of the outside portion of reinforcing cage; Multiple injected hole, the sidewall of above-mentioned Grouting Pipe is offered multiple above-mentioned injected hole; Intrusion pipe, along the length direction of above-mentioned Grouting Pipe, stretches into the inside of above-mentioned Grouting Pipe downwards; Grout outlet, is opened in the precalculated position of the following side of above-mentioned intrusion pipe, and above-mentioned grout outlet and above-mentioned injected hole align; Rubber bag tank, above above-mentioned grout outlet, and arrange at least one rubber bag tank that is collapsible or that expand at the lateral wall of above-mentioned intrusion pipe, the sidewall of above-mentioned rubber bag tank and above-mentioned intrusion pipe connects in addition.
In addition, also can be, above-mentioned Grouting Pipe be welded on the precalculated position of the outside portion of above-mentioned reinforcing cage.
In addition, also can be, above-mentioned Grouting Pipe comprises multiple Grouting Pipe, and above-mentioned multiple Grouting Pipe is welded on the precalculated position of the outside portion of above-mentioned reinforcing cage equably;
Above-mentioned intrusion pipe comprises multiple intrusion pipe.
In addition, also can be that above-mentioned each Grouting Pipe comprises multi-stage cementing pipe, be connected by screw thread between above-mentioned every two Grouting Pipe.
In addition, also can be, also comprise rubber bag tank, in the below of above-mentioned grout outlet, and arrange at least one rubber bag tank that is collapsible or that expand at the lateral wall of above-mentioned intrusion pipe, the sidewall of above-mentioned rubber bag tank and above-mentioned intrusion pipe connects in addition.
Present invention also offers a kind of post grouting construction method for castinplace pile, it comprises:
(1) Grouting Pipe is welded on the precalculated position of the outside portion of reinforcing cage, the sidewall of above-mentioned Grouting Pipe presets multiple injected hole;
(2) above-mentioned reinforcing cage is transferred to the precalculated position of stake holes, concrete perfusion in above-mentioned stake holes;
(3) treat that above-mentioned concreting reaches predetermined standard time, by the length direction of intrusion pipe along above-mentioned Grouting Pipe, stretch to the inside of above-mentioned Grouting Pipe, grout outlet and injected hole are aligned, then the position of above-mentioned intrusion pipe is fixed;
(4) in above-mentioned intrusion pipe, slurries are passed into, the rubber bag tank connected with above-mentioned intrusion pipe can pass into slurries because of inside and residual air becomes large gradually, above-mentioned like this rubber bag tank can expand the inwall making its cyst wall be adjacent to above-mentioned Grouting Pipe, at the lateral wall of above-mentioned intrusion pipe, relative to being respectively provided to a few rubber bag tank above and below above-mentioned grout outlet;
(5) when slip casting reaches predetermined standard time, namely slip casting is stopped, the slurries of above-mentioned rubber bag tank inside reduce gradually, rubber bag tank shrinks, then removable above-mentioned intrusion pipe makes its grout outlet aim at another injected hole, then the position of above-mentioned intrusion pipe is fixed, finally repeats above-mentioned steps (4).
Moreover also can be that above-mentioned Grouting Pipe comprises multiple Grouting Pipe, above-mentioned multiple Grouting Pipe be welded on the precalculated position of the outside portion of above-mentioned reinforcing cage equably.
Moreover, also can be that above-mentioned intrusion pipe comprises multiple intrusion pipe.
According to said structure and method, when slip casting being carried out to the stake holes with multilayer bearing stratum by this post jacking device, effectively can control the grouting amount to each bearing stratum, make each bearing stratum reach construction requirement, and then improve bearing capacity of single pile.Meanwhile, this post jacking apparatus structure is simple, and cost is low.In addition, multiple rubber bag tank plays sealing function, makes the slip casting of each bearing stratum not by impact each other.
Accompanying drawing explanation
By being described embodiment below in conjunction with accompanying drawing, above-mentioned characteristic sum technological merit of the present invention will become apparent and easy understand.
Fig. 1 is the structural representation of the post jacking device for castinplace pile that the present invention relates to;
Fig. 2 is the construction process figure of the post grouting construction method for castinplace pile that the present invention relates to.
Reference numeral:
1, Grouting Pipe; 11, injected hole;
2, intrusion pipe; 21, rubber bag tank;
22, grout outlet; 3, stake holes;
4, reinforcing cage; 5, bearing stratum.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further detailed description is done to the present invention.
In the following description, mode only by illustrating is described some example embodiment of the present invention, undoubtedly, those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise described embodiment with various different modes.Therefore, accompanying drawing and be described in just illustrative in essence, instead of for limiting the protection domain of claim.In addition, in this manual, identical Reference numeral indicates identical part.
Fig. 1 is the structural representation of the post jacking device for castinplace pile that the present invention relates to.As shown in Figure 1, this post jacking device comprises: Grouting Pipe 1, is fixedly welded on the precalculated position of the outside portion of reinforcing cage 4; Multiple injected hole 11, the sidewall of Grouting Pipe 1 is offered multiple injected hole 11; Intrusion pipe 2, along the length direction of Grouting Pipe 1, stretches into the inside of Grouting Pipe 1 downwards; Grout outlet 22, is opened in the precalculated position of the following side of intrusion pipe 2, and grout outlet 22 and injected hole 11 align; Rubber bag tank 21, above grout outlet 22, and at the lateral wall of intrusion pipe 2, at least one rubber bag tank 21 that is collapsible or that expand is set, or above and below grout outlet 22, and be respectively provided to few collapsible or an expand rubber bag tank 21 at the lateral wall of intrusion pipe 2, rubber bag tank 21 connects with the sidewall of intrusion pipe 2 in addition.In addition, Grouting Pipe 1 comprises multiple Grouting Pipe 1, and multiple Grouting Pipe 1 are welded on the precalculated position of the outside portion of reinforcing cage 4 equably; Same intrusion pipe 2 comprises multiple intrusion pipe 2, is convenient to even slip casting like this.
Fig. 2 is the construction process figure of the post grouting construction method for castinplace pile that the present invention relates to.As shown in Figure 2, in step S110, Grouting Pipe 1 is welded on the precalculated position of the outside portion of reinforcing cage 4, the sidewall of Grouting Pipe 1 presets multiple injected hole 11, injected hole 11 need be offered according to the depth location of the position of stake holes 3 and each bearing stratum 5, is convenient to like this carry out slip casting to each bearing stratum 5.
Then, step S120, transfers to the precalculated position of stake holes 3 by reinforcing cage 4, concrete perfusion in stake holes 3, and such Grouting Pipe 1 is embedded in concrete.
Then, step S130, treats that concreting reaches predetermined standard time, by the length direction of intrusion pipe 2 along Grouting Pipe 1, stretches to the inside of Grouting Pipe 1, grout outlet 22 and injected hole 11 is aligned, is then fixed the position of intrusion pipe 2.Intrusion pipe 2 can be welded mutually with Grouting Pipe 1, also by rope the upper end of intrusion pipe 2 can be fixed with the permanent position at ground place and be connected, like this position of intrusion pipe 2 is fixed.
Afterwards, step S140, slurries are passed in intrusion pipe 2, the rubber bag tank 21 connected with intrusion pipe 2 can pass into slurries because of inside and residual air becomes large gradually, such rubber bag tank 21 can expand the inwall making its cyst wall be adjacent to Grouting Pipe 1, at the lateral wall of intrusion pipe 2, at least one rubber bag tank 21 is set relative to the top of grout outlet 21, or relative to being respectively provided to a few rubber bag tank 21 above and below grout outlet 21.In slip casting process, the effect of its seal protection slurries of rubber bag tank 21, makes slurries not flow up or down, improves slip casting efficiency.
Finally, step S150, when slip casting reaches predetermined standard time, namely stop slip casting, the slurries of rubber bag tank 21 inside reduce gradually, and rubber bag tank 21 shrinks, then removable intrusion pipe 2 makes its grout outlet 21 aim at another injected hole 11, then be fixed the position of intrusion pipe 2, fixing means repetition step S130 relates to, and finally repeats above-mentioned steps S140.
Under above-mentioned instruction of the present invention; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment; and these improve and distortion; all drop in protection scope of the present invention; those skilled in the art should be understood that; above-mentioned specific descriptions just explain object of the present invention better, and protection scope of the present invention is by claim and equivalents thereof.
Claims (3)
1., for a post grouting construction method for castinplace pile, comprising:
(1) Grouting Pipe is welded on the precalculated position of the outside portion of reinforcing cage, the sidewall of above-mentioned Grouting Pipe presets multiple injected hole;
(2) above-mentioned reinforcing cage is transferred to the precalculated position of stake holes, concrete perfusion in above-mentioned stake holes;
(3) treat that above-mentioned concreting reaches predetermined standard time, by the length direction of intrusion pipe along above-mentioned Grouting Pipe, stretch to the inside of above-mentioned Grouting Pipe, grout outlet and injected hole are aligned, then the position of above-mentioned intrusion pipe is fixed;
(4) in above-mentioned intrusion pipe, pass into slurries, the rubber bag tank connected with above-mentioned intrusion pipe can pass into slurries because of inside and residual air becomes large gradually, above-mentioned like this rubber bag tank can expand the inwall making its cyst wall be adjacent to above-mentioned Grouting Pipe, at the lateral wall of above-mentioned intrusion pipe, relative to being respectively provided to a few rubber bag tank above and below above-mentioned grout outlet;
(5) when slip casting reaches predetermined standard time, namely stop slip casting, the slurries of above-mentioned rubber bag tank inside reduce gradually, rubber bag tank shrinks, then moving above-mentioned intrusion pipe makes its grout outlet aim at another injected hole, is then fixed the position of above-mentioned intrusion pipe, finally repeats above-mentioned steps (4).
2., according to the post grouting construction method for castinplace pile according to claim 1, it is characterized in that,
Above-mentioned Grouting Pipe comprises multiple Grouting Pipe, and above-mentioned multiple Grouting Pipe is welded on the precalculated position of the outside portion of above-mentioned reinforcing cage equably.
3., according to the post grouting construction method for castinplace pile according to claim 1, it is characterized in that,
Above-mentioned intrusion pipe comprises multiple intrusion pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210067599.1A CN102605770B (en) | 2012-03-14 | 2012-03-14 | Post grouting device for filling pile and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210067599.1A CN102605770B (en) | 2012-03-14 | 2012-03-14 | Post grouting device for filling pile and construction method |
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| CN102605770A CN102605770A (en) | 2012-07-25 |
| CN102605770B true CN102605770B (en) | 2015-06-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013134B (en) * | 2016-07-18 | 2020-03-17 | 浙江水利水电学院 | Diameter-expanding concrete pipe pile, diameter-expanding device and diameter-expanding method |
| CN112144511B (en) * | 2020-09-24 | 2022-05-10 | 中国一冶集团有限公司 | Vacuum-assisted post grouting device and method for cast-in-situ bored pile |
| CN113373931B (en) * | 2021-06-18 | 2022-05-31 | 南京东土建设科技有限公司 | Grouting device with independently controlled upper end and lower end |
| CN114086543A (en) * | 2021-12-20 | 2022-02-25 | 上海勘察设计研究院(集团)有限公司 | Steel pipe pile internal segmented grouting structure and using method thereof |
| CN114482057A (en) * | 2021-12-27 | 2022-05-13 | 佛山科学技术学院 | Control device and method for pile side grouting reinforcement of pipe pile foundation |
| CN114319331B (en) * | 2022-03-08 | 2022-06-21 | 中国长江三峡集团有限公司 | Construction method of underwater pipe pile type foundation and underwater pipe pile type foundation |
| CN115613580A (en) * | 2022-10-28 | 2023-01-17 | 中国十九冶集团有限公司 | Single grouting pipe of cast-in-place pile and composite post-grouting method |
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| CN2663516Y (en) * | 2003-10-30 | 2004-12-15 | 北京城建集团有限责任公司 | Back pressing slurry injecting device to side and bottom of pile in drilling caisson pile procession |
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| CN1138898C (en) * | 2000-02-18 | 2004-02-18 | 中国建筑科学研究院地基基础研究所 | Apparatus and technology for side rear grouting of compresol pile |
| CN1226491C (en) * | 2003-10-30 | 2005-11-09 | 北京城建集团有限责任公司 | Post mudjack construction technics for sidewal and bottom of bore of filling pile |
| CN201232182Y (en) * | 2008-08-01 | 2009-05-06 | 中铁十七局集团第二工程有限公司 | Post-mud jacking apparatus for bottom and lateral of bored pile |
| KR101059754B1 (en) * | 2009-04-01 | 2011-08-26 | 김진섭 | Grouting method using grout injection device of multi-pipe structure |
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Patent Citations (1)
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|---|---|---|---|---|
| CN2663516Y (en) * | 2003-10-30 | 2004-12-15 | 北京城建集团有限责任公司 | Back pressing slurry injecting device to side and bottom of pile in drilling caisson pile procession |
Non-Patent Citations (1)
| Title |
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| 灌注桩后压浆技术的理论分析与实践;张志伟;《中国优秀硕士学位论文电子期刊》;20050615;第12页第2）节和图1-7 * |
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Address after: 100085, Beijing, Beijing economic and Technological Development Zone, Kangding street, No. 1, 2, six or seven, Daxing District Patentee after: MCC COMMUNICATION CONSTRUCTION GROUP CO., LTD. Address before: 100028, Beijing, Chaoyang District, No. 28, west of China Metallurgical Building, 18 and 19 Patentee before: MCC Communication Engineering Technology Co., Ltd. |