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Pile-soil action indoor testing apparatus

A technology of test device and action chamber, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., to achieve good repeatability, facilitate the correction of test results, and eliminate the effects of initial displacement system errors

Inactive Publication Date: 2005-01-19
SHENGLI PETROLEUM ADMINISTRATION BUREAU DRILLING TECH ACAD SINOPEC
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Problems solved by technology

[0005] The technical solution of the present invention: the pile-soil action indoor test needs to solve the simulation of the initial formation environment of the pile-soil and the stress simulation and testing of the model pile. The solution of the present invention is as follows:

Method used

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  • Pile-soil action indoor testing apparatus
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Embodiment Construction

[0016] Now in conjunction with the accompanying drawings of the description, the present invention will be further described:

[0017] (1) Manufacture the overlying earth pressure ballast system, bucket body, and loading system of the device according to the design requirements, and complete the device.

[0018] (2) Connect the model pile to the casing (the one that needs to go through the ballast cover is only connected to the pile first), and apply lateral force in a balanced manner.

[0019] (3) Put the test foundation soil into the barrel and pre-bury the model piles (usually the diameter of the pile is not greater than 1 / 6 of the inner diameter of the barrel, and the thickness of the soil at the top and bottom of the pile is not less than 5 times the diameter of the pile). The overburden pressure ballast system is installed, and the vertical force is applied to the model pile in balance through the set of wires.

[0020] (4) Refer to the geotechnical consolidation test p...

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Abstract

This invention relates to a new type of experiment apparatus in pile-soil operation chamber, which is to mock up and test the interaction of pile-soil under multiple conditions in the chamber. It comprises upper cap-mud pressure load apparatus, barrel and balance load system, wherein, several set wires go through the side wall, bottom of barrel and pressure load cap to exert double pressure on the imbedded model peg, meanwhile to measure the pile-soil interaction under the alternating load. This invention can be applied to study the foundation bearing principle and to test various bearing abilities.

Description

Technical field: [0001] The invention develops an indoor test device suitable for pile-soil action test, which is mainly used in foundation bearing mechanism research and various foundation bearing capacity tests. technical background: [0002] At present, indoor geotechnical tests are mainly carried out on soil samples. The force is applied by pushing force. The samples are small. Only the physical and mechanical indicators of the soil are tested, and the pile-soil interaction cannot be fully tested. On-site tests include methods such as testing the bearing capacity of pile foundations, as well as relatively mature technical procedures, but the cost is high, and usually it can only be carried out in conjunction with engineering, and the test conditions are difficult to accurately control or repeat. [0003] In various engineering design and construction, foundation bearing capacity is the key factor of project quality and construction cost. The development of new foundation...

Claims

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Application Information

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IPC IPC(8): G01N3/08
Inventor 沈琛张士华徐松森刘孟家初新杰陈学春于鸿洁季耀华沈琪洪学福
Owner SHENGLI PETROLEUM ADMINISTRATION BUREAU DRILLING TECH ACAD SINOPEC
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