CN105297792A - Deep hole pile foundation bearing capacity testing device - Google Patents
Deep hole pile foundation bearing capacity testing device Download PDFInfo
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- CN105297792A CN105297792A CN201510705243.XA CN201510705243A CN105297792A CN 105297792 A CN105297792 A CN 105297792A CN 201510705243 A CN201510705243 A CN 201510705243A CN 105297792 A CN105297792 A CN 105297792A
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- Prior art keywords
- layer sleeve
- sleeve
- bearing capacity
- inner layer
- pile
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a deep hole pile foundation bearing capacity testing device. The problem that friction force of a soil body on the sidewall of a sleeve influences testing of the bearing capacity of a pile foundation is solved. The testing device comprises an inner sleeve (3) arranged at the upper end of the outer side face of a pile body (1). Annular supporting ribs (5) are arranged on the outer sidewall of the inner sleeve (3) at intervals. The inner sleeve (3) provided with the annular supporting ribs (5) is sleeved with an outer sleeve (2). Gaps (11) are formed between the inner sidewall of the outer sleeve (2) and the outer side ends of the annular supporting ribs (5). A sealing ring (4) is arranged between the bottom end of the inner sleeve (3) and the outer sleeve (2). A cavity between the inner sleeve (3) and the outer sleeve (2) is filled with water (10). A jack (7) and a balancing weight (8) are arranged on the top end face of the pile body (1). By adopting the testing device, valuable reference parameters can be provided for construction of cast-in-place piles of the same type.
Description
Technical field
The present invention relates to the static test of bearing capacity device of a kind of drilled pile, particularly a kind of test of bearing capacity device of bored pile.
Background technology
In the city that foundation condition is poor, many grounds can not directly bear highrise building conduct come pressure, if highrise building adopts common friction pile, large foundation settlement be produced, in order to address these problems, generally adopt bored pile.Bored pile, after deep hole forming pile, should carry out bearing capacity of pile foundation test, whether can reach the requirement of design with the bearing capacity of detection of pier foundation.In bearing capacity of pile foundation test, traditional castinplace pile sleeve all adopts individual layer sleeve to carry out, and there is the problem that soil body frictional force in sleeve lateral wall is large.In castinplace pile filling process, be generally adopt post-mud-jacking bored pile, to reach the object improving bearing capacity of pile foundation, but post-mud-jacking bored pile is easy to make post jacking rise to the side-walls of sleeve pipe, has influence on the accuracy of bearing capacity of pile foundation test.In the prior art, also there is the mode adopting two sleeve drilled pile post jacking, but in the gap of inner and outer sleeves, often there will be by the phenomenon of post jacking shutoff, cause test for static load result inaccurate.
Summary of the invention
The invention provides a kind of deep hole stake bearing capacity of pile foundation testing arrangement, solve soil body frictional force in sleeve lateral wall to the technical problem of bearing capacity of pile foundation tests affect.
The present invention solves above technical problem by the following technical programs:
A kind of deep hole stake bearing capacity of pile foundation testing arrangement, comprise pile body, the lateral surface upper end of pile body is provided with inner layer sleeve, on the lateral wall of inner layer sleeve, compartment of terrain is provided with annular brace muscle, inner layer sleeve with annular brace muscle is socketed with outer layer sleeve, gap is provided with between the inside wall of outer layer sleeve and the outboard end of annular brace muscle, sealing ring is provided with between the bottom and the bottom of outer layer sleeve of inner layer sleeve, shutoff circle is provided with between the top and the top of outer layer sleeve of inner layer sleeve, water is filled with in cavity between inner layer sleeve and outer layer sleeve, the top end face of pile body is provided with jack, jack is provided with balancing weight.
Between the bottom and the bottom of outer layer sleeve of inner layer sleeve, be provided with the annular brace muscle of 20 millimeters thick, the width in gap is 5 millimeters.
The present invention directly can test the bearing capacity of pile foundation within the scope of effective length more exactly, and provides valuable reference parameter for filling pile construction of the same type.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
A kind of deep hole stake bearing capacity of pile foundation testing arrangement, comprise pile body 1, the lateral surface upper end of pile body 1 is provided with inner layer sleeve 3, on the lateral wall of inner layer sleeve 3, compartment of terrain is provided with annular brace muscle 5, outer layer sleeve 2 is being socketed with on the inner layer sleeve 3 of annular brace muscle 5, gap 11 is provided with between the inside wall of outer layer sleeve 2 and the outboard end of annular brace muscle 5, sealing ring 4 is provided with between the bottom of inner layer sleeve 3 and the bottom of outer layer sleeve 2, shutoff circle 6 is provided with between the top of inner layer sleeve 3 and the top of outer layer sleeve 2, water 10 is filled with in cavity between inner layer sleeve 3 and outer layer sleeve 2, the top end face of pile body 1 is provided with jack 7, jack 7 is provided with balancing weight 8.
The annular brace muscle of 20 millimeters thick is provided with between the bottom of inner layer sleeve 3 and the bottom of outer layer sleeve 2, effectively can stop that post jacking 9 enters between two sleeves, the width in gap 11 is 5 millimeters, the effect of internal housing supports after annular brace muscle 5 plays and prevents pile body 1 from tilting.
In order to effectively reduce the frictional resistance of the above pile body of substrate absolute altitude and the soil body, the contact of the isolated above pile body of substrate absolute altitude and the soil body, present invention employs double-jacket tube method to eliminate the side skin friction of this section of soil body, the processing and fabricating of sleeve pipe and installation, to strictly control its precision, to ensure the accuracy of dynamometry.
Claims (2)
1. a deep hole stake bearing capacity of pile foundation testing arrangement, comprise pile body (1), it is characterized in that, the lateral surface upper end of pile body (1) is provided with inner layer sleeve (3), on the lateral wall of inner layer sleeve (3), compartment of terrain is provided with annular brace muscle (5), outer layer sleeve (2) is being socketed with on the inner layer sleeve (3) of annular brace muscle (5), gap (11) is provided with between the inside wall of outer layer sleeve (2) and the outboard end of annular brace muscle (5), sealing ring (4) is provided with between the bottom of inner layer sleeve (3) and the bottom of outer layer sleeve (2), shutoff circle (6) is provided with between the top of inner layer sleeve (3) and the top of outer layer sleeve (2), water (10) is filled with in cavity between inner layer sleeve (3) and outer layer sleeve (2), the top end face of pile body (1) is provided with jack (7), jack (7) is provided with balancing weight (8).
2. a kind of deep hole stake bearing capacity of pile foundation testing arrangement according to claim 1, it is characterized in that, be provided with the annular brace muscle of 20 millimeters thick between the bottom of inner layer sleeve (3) and the bottom of outer layer sleeve (2), the width of gap (11) is 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705243.XA CN105297792A (en) | 2015-10-27 | 2015-10-27 | Deep hole pile foundation bearing capacity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705243.XA CN105297792A (en) | 2015-10-27 | 2015-10-27 | Deep hole pile foundation bearing capacity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105297792A true CN105297792A (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510705243.XA Pending CN105297792A (en) | 2015-10-27 | 2015-10-27 | Deep hole pile foundation bearing capacity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105297792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733898A (en) * | 2020-06-09 | 2020-10-02 | 浙江金鑫管桩有限公司 | Method for testing shearing resistance and bearing capacity of PHC (prestressed high-strength concrete) pipe pile |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3107458B2 (en) * | 1992-06-24 | 2000-11-06 | 英明 岸田 | Confirmation and increase method of bearing capacity of cast-in-place pile |
| JP2011117172A (en) * | 2009-12-02 | 2011-06-16 | Shimizu Corp | Method for checking end bearing capacity of cast-in-place pile |
| CN201933516U (en) * | 2010-12-15 | 2011-08-17 | 上海市基础工程有限公司 | Double-layer steel sleeve for drilled pile static load test |
| CN202689061U (en) * | 2012-06-29 | 2013-01-23 | 中国建筑第八工程局有限公司 | Double casing pipe for eliminating side friction of part above elevation of pile top of trial pile |
| CN202925543U (en) * | 2012-10-26 | 2013-05-08 | 武汉武建机械施工有限公司 | Concentric steel-made double sleeve pipe |
| CN103628509A (en) * | 2013-04-19 | 2014-03-12 | 李福清 | Double-casing structure formed by inner casing and outer casing for pile foundation bearing capacity test and made of different materials, and construction method thereof |
| CN204385732U (en) * | 2014-11-26 | 2015-06-10 | 江苏筑森建筑设计有限公司 | Eliminate the structure of the frictional force that design elevation above pile cutoff in castinplace pile king-pile top produces |
| CN205189018U (en) * | 2015-10-27 | 2016-04-27 | 山西省第三建筑工程公司 | Deep hole stake pile foundation bearing capacity testing arrangement |
-
2015
- 2015-10-27 CN CN201510705243.XA patent/CN105297792A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3107458B2 (en) * | 1992-06-24 | 2000-11-06 | 英明 岸田 | Confirmation and increase method of bearing capacity of cast-in-place pile |
| JP2011117172A (en) * | 2009-12-02 | 2011-06-16 | Shimizu Corp | Method for checking end bearing capacity of cast-in-place pile |
| CN201933516U (en) * | 2010-12-15 | 2011-08-17 | 上海市基础工程有限公司 | Double-layer steel sleeve for drilled pile static load test |
| CN202689061U (en) * | 2012-06-29 | 2013-01-23 | 中国建筑第八工程局有限公司 | Double casing pipe for eliminating side friction of part above elevation of pile top of trial pile |
| CN202925543U (en) * | 2012-10-26 | 2013-05-08 | 武汉武建机械施工有限公司 | Concentric steel-made double sleeve pipe |
| CN103628509A (en) * | 2013-04-19 | 2014-03-12 | 李福清 | Double-casing structure formed by inner casing and outer casing for pile foundation bearing capacity test and made of different materials, and construction method thereof |
| CN204385732U (en) * | 2014-11-26 | 2015-06-10 | 江苏筑森建筑设计有限公司 | Eliminate the structure of the frictional force that design elevation above pile cutoff in castinplace pile king-pile top produces |
| CN205189018U (en) * | 2015-10-27 | 2016-04-27 | 山西省第三建筑工程公司 | Deep hole stake pile foundation bearing capacity testing arrangement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733898A (en) * | 2020-06-09 | 2020-10-02 | 浙江金鑫管桩有限公司 | Method for testing shearing resistance and bearing capacity of PHC (prestressed high-strength concrete) pipe pile |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
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| WD01 | Invention patent application deemed withdrawn after publication |