CN105256845A - Pile end post-grouting grouting pipe snapping-prevention device used for measuring pile through self-balancing method - Google Patents
Pile end post-grouting grouting pipe snapping-prevention device used for measuring pile through self-balancing method Download PDFInfo
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- CN105256845A CN105256845A CN201510625027.4A CN201510625027A CN105256845A CN 105256845 A CN105256845 A CN 105256845A CN 201510625027 A CN201510625027 A CN 201510625027A CN 105256845 A CN105256845 A CN 105256845A
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Abstract
The invention relates to grouting pipe snapping-prevention equipment in the pile measuring process through a self-balancing method, in particular to a pile end post-grouting grouting pipe snapping-prevention device used for measuring a pile through the self-balancing method. The pile end post-grouting grouting pipe snapping-prevention device comprises a pile body (1) and grouting pipes (2) pre-buried inside the pipe body (1). Loading boxes (3) are pre-buried at the lower end of the interior of the pile body (1), and the grouting pipes (2) are further arranged inside the loading boxes (3). The two ends of the grouting pipes (2) penetrate out of the loading boxes (3) and the pile body (1). Insulating casing pipes (4) are arranged on the outer sides of the grouting pipes (2). Steel plugs (5) are arranged at the upper ends of the grouting pipes. Grouting valves (6) are arranged at the lower ends of the grouting pipes, and the upper ends of the insulating casing pipes (4) penetrate out of the top of the pile body (1). Sealing gaskets (7) are symmetrically arranged at the upper ends and the lower ends of the insulating casing pipes (4) of the grouting pipes. The pile end post-grouting grouting pipe snapping-prevention device used for measuring the pile through the self-balancing method has the beneficial effects that the structure is simple and the using is convenient; it is ensured that the parts of the grouting pipes pre-buried in the loading boxes are not snapped after the pile is measured through the self-balancing method due to the fact that the grouting pipes are separated from poured concrete of the pile body through the insulating casing pipes.
Description
Technical field
The present invention relates to the equipment preventing Grouting Pipe to be pulled off in self-balancing approach peg process, be specially the anti-breaking device of pile-end post-grouting Grouting Pipe for self-balancing approach peg.
Background technology
Self-balancing approach is a kind of static load test method based on seeking to load counter-force in foundation pile inside.Correspondingly, the enforcement technology of this test method, is called " reflexive force method peg technology " or " self-balancing approach peg technology ".According to existing dossier of investigating, by domestic hat with " self-balancing approach " and name stake in pre-buried loading equipemtn carry out the method for pile's bearing properties detection, have AfarVasela company of Israel propose and implement early than generation nineteen sixty.Different from traditional accumulation load method, this technology is placed in bottom pile body by the load box made by the sizing of pile capacity parameter request in work progress, connect exert pressure oil pipe and displacement measuring device in stake top, after concrete curing to valid period of standard, exerted pressure to bottom load box by top high-voltage oil pump, draw the total frictional resistance of bearing capacity of pile tip and stake side.
And foundation pile autobalanced detection method is embedded load case in the middle of pile body, utilize the Balancing relization of stake self counter-force to the loading of pile body, be a kind of test method close to vertical compression, uplift pile actual operating conditions, the utmost tip resistance of single pile vertical resistance pressure, CAPO test and pile soil horizon, the utmost lateral friction of pile-end soil can be determined.Although self-balancing test is widely used, for the test pile of post jacking process, when carrying out self-balancing approach test, pre-buried Grouting Pipe can be broken because of opening of load box, affects later stage slip casting; Time serious, even do over again, add construction period and labour intensity.Therefore, for the problems referred to above we to have developed a kind of structure simple, easy to use, disrance sleeve is utilized to be separated by the concrete that Grouting Pipe and pile body are poured into, after carrying out self-balancing approach peg, the anti-breaking device of pile-end post-grouting Grouting Pipe for self-balancing approach peg that pre-buried Grouting Pipe is not pulled off at load cell position can be ensured.
Summary of the invention
The object of the invention is for above-described problems of the prior art, there is provided a kind of structure simple, easy to use, disrance sleeve is utilized to be separated by the concrete that Grouting Pipe and pile body are poured into, after carrying out self-balancing approach peg, the anti-breaking device of pile-end post-grouting Grouting Pipe for self-balancing approach peg that pre-buried Grouting Pipe is not pulled off at load cell position can be ensured.
In order to realize described object, the present invention specifically adopts following technical scheme:
For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, it comprises pile body 1, the Grouting Pipe 2 that pile body 1 is inner pre-buried.It is characterized in that: described pile body 1 interior lower end is embedded with load box 3, and its inside is also provided with Grouting Pipe 2, its Grouting Pipe 2 two ends pass load box 3 and pile body 1; Be provided with disrance sleeve 4 outside described Grouting Pipe 2, upper end is provided with steel plug 5, and lower end is provided with grouting valve 6, and disrance sleeve 4 upper end passes the top of pile body 1; Its disrance sleeve about 4 two ends symmetry be provided with sealing mat 7.
Described Grouting Pipe 2 upper end passes the top 100cm of pile body 1, and lower end passes the bottom 30cm of pile body 1.
Described disrance sleeve 4 upper end passes the top 50cm of pile body 1, and lower end passes load box 50cm, and disrance sleeve 4 is sealed by sealing mat 7 with the gap of Grouting Pipe 2, and after its sealing, outside is provided with mackintosh.
Described disrance sleeve 4 is made up of PVC material.
The present invention is used for the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, be provided with disrance sleeve 4 outside described Grouting Pipe 2, upper end is provided with steel plug 5, and lower end is provided with grouting valve 6, and Grouting Pipe 2 upper end passes the top 100cm of pile body 1, lower end passes the bottom 30cm of pile body 1; Disrance sleeve 4 upper end of being made up of PVC material passes the top 50cm of pile body 1, lower end passes load box 50cm, disrance sleeve 4 is sealed by sealing mat 7 with the gap of Grouting Pipe 2, and outside is provided with mackintosh after its sealing, it utilizes disrance sleeve to be separated by the concrete that Grouting Pipe and pile body are poured into, after carrying out self-balancing approach peg, can ensure that pre-buried Grouting Pipe is not pulled off at load cell position, easy to use, any adverse effect can not be produced to later stage slip casting.
Compared with prior art, beneficial effect of the present invention is: structure is simple, easy to use, disrance sleeve is utilized to be separated by the concrete that Grouting Pipe and pile body are poured into, after carrying out self-balancing approach peg, can ensure that pre-buried Grouting Pipe is not pulled off at load cell position, any adverse effect can not be produced to later stage slip casting.
Accompanying drawing explanation
Fig. 1 is the structural representation before load box of the present invention opens.
Fig. 2 is the structural representation after load box of the present invention opens.
In figure: pile body 1, Grouting Pipe 2, load box 3, disrance sleeve 4, steel plug 5, grouting valve 6, sealing mat 7.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, accompanying drawing 2, structure of the present invention and beneficial effect thereof are further illustrated.
Embodiment 1
For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, as described in Figure 1, it comprises pile body 1, the Grouting Pipe 2 that pile body 1 is inner pre-buried.Described pile body 1 interior lower end is embedded with load box 3, and its inside is also provided with Grouting Pipe 2, and its Grouting Pipe 2 two ends pass load box 3 and pile body 1; Be provided with disrance sleeve 4 outside described Grouting Pipe 2, upper end is provided with steel plug 5, and lower end is provided with grouting valve 6, and disrance sleeve 4 upper end passes the top of pile body 1; Its disrance sleeve about 4 two ends symmetry be provided with sealing mat 7.
Described Grouting Pipe 2 upper end passes the top 100cm of pile body 1, and lower end passes the bottom 30cm of pile body 1.
Described disrance sleeve 4 upper end passes the top 50cm of pile body 1, and lower end passes load box 50cm, and disrance sleeve 4 is sealed by sealing mat 7 with the gap of Grouting Pipe 2, and after its sealing, outside is provided with mackintosh.
Described disrance sleeve 4 is made up of PVC material.
Grouting Pipe 2 and cement separate by described disrance sleeve 4, after carrying out self-balancing approach peg, can ensure that pre-buried Grouting Pipe 2 is not pulled off in load box 3 position, easy to use, can not produce any adverse effect to later stage slip casting.
During work, the first inner embedded load case 3 of pile body 1, then Grouting Pipe 2 is arranged on disrance sleeve 4 inside composition integral structure, and Grouting Pipe 2 upper end passes disrance sleeve 4 upper end 50cm, lower end passes disrance sleeve 4; Subsequently the Grouting Pipe 2 of integral structure, disrance sleeve 4 are arranged on pile body 1 inside, and it passes load box 3, then carries out slip casting by grouting valve 6, with the shutoff of steel plug 5 after slip casting completes, it is easy to use.
In description of the invention, term " on ", the orientation of D score instruction based on orientation shown in the drawings, be only the present invention for convenience of description instead of require that the present invention must operate with specific orientation, therefore can not be interpreted as limitation of the present invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. for the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, it comprises pile body (1), the Grouting Pipe (2) that pile body (1) is inner pre-buried; It is characterized in that: described pile body (1) interior lower end is embedded with load box (3), and its inside is also provided with Grouting Pipe (2), its Grouting Pipe (2) two ends pass load box (3) and pile body (1); Described Grouting Pipe (2) outside is provided with disrance sleeve (4), upper end is provided with steel plug (5), lower end is provided with grouting valve (6), and disrance sleeve (4) upper end passes the top of pile body (1); Its disrance sleeve (4) up and down two ends symmetry be provided with sealing mat (7).
2. according to claim 1 for the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, it is characterized in that: described Grouting Pipe (2) upper end passes the top 100cm of pile body (1), and lower end passes the bottom 30cm of pile body (1).
3. according to claim 1 for the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, it is characterized in that: described disrance sleeve (4) upper end passes the top 50cm of pile body (1), lower end passes load box 50cm, disrance sleeve (4) is sealed by sealing mat (7) with the gap of Grouting Pipe (2), and after its sealing, outside is provided with mackintosh.
4. according to claim 1 or 2 for the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg, it is characterized in that: described disrance sleeve (4) is made up of PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625027.4A CN105256845B (en) | 2015-09-25 | 2015-09-25 | For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625027.4A CN105256845B (en) | 2015-09-25 | 2015-09-25 | For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg |
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| Publication Number | Publication Date |
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| CN105256845A true CN105256845A (en) | 2016-01-20 |
| CN105256845B CN105256845B (en) | 2017-04-05 |
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|---|---|---|---|
| CN201510625027.4A Active CN105256845B (en) | 2015-09-25 | 2015-09-25 | For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031841A (en) * | 2012-12-31 | 2013-04-10 | 中国建筑西南勘察设计研究院有限公司 | Post-tensioned prestressing rectangular hollow foundation pit support pile |
| JP2013174096A (en) * | 2012-02-27 | 2013-09-05 | Taisei Corp | Loading test device for pile |
| CN203420293U (en) * | 2013-08-23 | 2014-02-05 | 南昌永祺科技发展有限公司 | Device for detecting bearing capacity of piercing annular foundation pile |
| CN204435439U (en) * | 2015-01-12 | 2015-07-01 | 宋博琪 | A kind of foundation pile static load detects uses Novel self-balanced load box |
| CN204940374U (en) * | 2015-09-25 | 2016-01-06 | 甘肃省建筑科学研究院 | For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg |
-
2015
- 2015-09-25 CN CN201510625027.4A patent/CN105256845B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013174096A (en) * | 2012-02-27 | 2013-09-05 | Taisei Corp | Loading test device for pile |
| CN103031841A (en) * | 2012-12-31 | 2013-04-10 | 中国建筑西南勘察设计研究院有限公司 | Post-tensioned prestressing rectangular hollow foundation pit support pile |
| CN203420293U (en) * | 2013-08-23 | 2014-02-05 | 南昌永祺科技发展有限公司 | Device for detecting bearing capacity of piercing annular foundation pile |
| CN204435439U (en) * | 2015-01-12 | 2015-07-01 | 宋博琪 | A kind of foundation pile static load detects uses Novel self-balanced load box |
| CN204940374U (en) * | 2015-09-25 | 2016-01-06 | 甘肃省建筑科学研究院 | For the anti-breaking device of pile-end post-grouting Grouting Pipe of self-balancing approach peg |
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| CN105256845B (en) | 2017-04-05 |
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Effective date of registration: 20180903 Address after: 730050 No. 575, Xijin East Road, Qilihe District, Lanzhou, Gansu. Patentee after: Gansu construction research and Construction Engineering Co., Ltd. Address before: Qilihe District of Gansu city in Lanzhou Province, 575 west east road construction building, 19 floor Patentee before: GANSU PROVINCIAL ACADEMY OF BUILDING RESEARCH |
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