CN1232116A - Ground anchor heaping test pile method - Google Patents
Ground anchor heaping test pile method Download PDFInfo
- Publication number
- CN1232116A CN1232116A CN 98101377 CN98101377A CN1232116A CN 1232116 A CN1232116 A CN 1232116A CN 98101377 CN98101377 CN 98101377 CN 98101377 A CN98101377 A CN 98101377A CN 1232116 A CN1232116 A CN 1232116A
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- pile
- test pile
- ground anchor
- machine
- heaping
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Abstract
A pile test method with ground anchor and stacked load features that the caterpillar-type full-hydraulic static pile-driving and pulling machine is used as main counterforce provider for testing pile and the dead weight and balance weight of the machine is used as stacked load to provide counterforce. Based on the load-bearing requirement of pile, two or more steel pipe sleeve as anchor are pressed into ground, and connected with pile machine for providing counterforce. Its advantages are high flexibility and very low cost.
Description
The present invention relates to a kind of foundation basic construction technology.
The on-the-spot full size static loading test of stake is the basic and reliable method that obtains axial compression resistance, resistance to plucking and the lateral bearing power of stake.Present domestic test pile adopts separate unit or many in parallel loadings of same model jack often, and the counterforce device that loads has only following three kinds usually:
(1). anchoring pile primary and secondary beam counterforce device, adopt this method need strengthen the arrangement of reinforcement of anchoring pile, connection and structure, when carrying out large-tonnage castinplace pile when test, can't random sampling, its test pile cost is very high.
(2). the heavy platform counterforce device of heap, adopt trouble of this method test pile construction, carry a large amount of sedimentations that will cause ground when on soft foundation, carrying out raft.
(3). the anchoring pile heap is heavily united counterforce device, and changing method is to hang heavily to pile on anchoring pile primary and secondary beam or truss device to weigh, test pile construction trouble, cost is higher, also is unfavorable for safety simultaneously.
The purpose of this invention is to provide a kind of ground anchor heaping test pile method, can the random sampling test pile, reduce the test pile cost, avoid the sedimentation that causes that ground is big.
Technical scheme of the present invention is: this ground anchor heaping test pile method, be to adopt the all-hydraulic static pile press extractor of walking that site operation uses main counterforce device as test pile, provide counter-force with deadweight of stake machine and counterweight as preloading, can be according to the requirement for bearing capacity of stake, select for use the above steel sleeves of two or two to adopt single-unit or more piece to be pressed in the soil as ground anchor peg with a machine by joint spreading mode, it is connected so that auxiliary counter-force to be provided with the stake machine, after test pile finished, the steel sleeve that is pressed in the soil was still extracted the withdrawal recycling by the stake machine.
Above-mentioned steel sleeve is an open type, and diameter is more than 400mm.
Adopt ground anchor heaping test pile method to advance the test pile construction, focusing on certainly more than the 1000KN of stake machine and counterweight, single steel sleeve can provide the counter-force of 1000-3000KN, and The combined is used, 3000KN can be provided above test pile counter-force, can satisfy engineering test pile requirement commonly used.The diameter of steel sleeve and length can require to choose according to the stake counter-force.
Advantage of the present invention is: adopt ground anchor heaping test pile method of the present invention to advance the test pile construction, the all-hydraulic static pile press extractor of walking is simple to operate, maneuverability, steel sleeve sink in the soil as ground anchor peg, can with a stake machine it be extracted repeated use again after test pile finishes.So just can accomplish the random sampling test pile, greatly reduce the test pile cost simultaneously.Adopt method of the present invention in the enterprising test pile construction of soft foundation in addition, generally can not cause the big sedimentation on ground, and construction safety is reliable.Be applicable to not arrangement of reinforcement or underreinforced bored concrete pile machine engineering, also applicable to the castinplace pile or the prefabricated pile foundation engineering of high arrangement of reinforcement.
Claims (2)
1, a kind of ground anchor heaping test pile method, load with counterforce device, it is characterized in that: the all-hydraulic static pile press extractor of walking that site operation is used is as the main counterforce device of test pile, provide counter-force with deadweight of stake machine and counterweight as preloading, with requirement for bearing capacity according to stake, select for use the steel sleeve more than two or two to adopt single-unit or more piece to be pressed in the soil as ground anchor peg with the stake machine by joint spreading mode, it is connected so that auxiliary counter-force to be provided with the stake machine, after test pile finished, the steel sleeve that is pressed in the soil was still extracted the withdrawal recycling by the stake machine.
2, ground anchor heaping test pile method according to claim 1 is characterized in that: described steel sleeve is an open type, and diameter is more than 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101377 CN1232116A (en) | 1998-04-16 | 1998-04-16 | Ground anchor heaping test pile method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101377 CN1232116A (en) | 1998-04-16 | 1998-04-16 | Ground anchor heaping test pile method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1232116A true CN1232116A (en) | 1999-10-20 |
Family
ID=5216658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98101377 Pending CN1232116A (en) | 1998-04-16 | 1998-04-16 | Ground anchor heaping test pile method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1232116A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862944A (en) * | 2016-06-08 | 2016-08-17 | 国网四川省电力公司经济技术研究院 | Full-scale testing apparatus for spread foundations |
| CN105862943A (en) * | 2016-06-08 | 2016-08-17 | 国网四川省电力公司经济技术研究院 | Concrete expansion foundation experiment device and realization method |
-
1998
- 1998-04-16 CN CN 98101377 patent/CN1232116A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862944A (en) * | 2016-06-08 | 2016-08-17 | 国网四川省电力公司经济技术研究院 | Full-scale testing apparatus for spread foundations |
| CN105862943A (en) * | 2016-06-08 | 2016-08-17 | 国网四川省电力公司经济技术研究院 | Concrete expansion foundation experiment device and realization method |
| CN105862944B (en) * | 2016-06-08 | 2017-09-22 | 国家电网公司 | A kind of spread foundation full scale test device |
| CN105862943B (en) * | 2016-06-08 | 2017-09-26 | 国家电网公司 | A kind of concrete spread foundation experimental rig and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |