Shearing strength testing device for pile-soil interface

A technology of testing device and pile-soil interface, applied in the field of pile foundation engineering, can solve the problems of high cost, inaccurate test results, imperfect testing equipment, etc., and achieve the effect of simple connection and strong operability

Inactive Publication Date: 2016-06-22
王永洪
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  • Application Information

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Problems solved by technology

[0002] At present, there are few studies on the mechanical properties of the pile-soil interface at home and abroad. The on-site test is to install test elements on the side of the pile to actually test the lateral friction of the soil around the pile. However, this test method takes a long time, is expensive, and the test results are inaccurate. The indoor test has not yet formed a standard test method, and the test equipment is not perfect. The principle of the direct shear test device is often

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  • Shearing strength testing device for pile-soil interface
  • Shearing strength testing device for pile-soil interface

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing:

[0011] As shown in the figure, a pile-soil interface shear stress test device, the main structure includes a frame 1, an upper shear box 2, a lower shear box 3, a roller 4, a hydraulic control device 5, a horizontal jack 6, and a vertical jack 7. Composed of counter force plate 8, top plate 9, first force measuring steel rod 10, second force measuring steel rod 11, force sensor 12, and force display controller 13; it is characterized in that: horizontal jack 6 and vertical jack 7 are fixed Installed on the frame 1 and connected with the hydraulic control device 5; the horizontal jack 6 is in contact with one side of the lower shear box 3 to provide horizontal power; the vertical jack 7 is in contact with the top plate of the upper shear box 2 to provide vertical pressure; The left side of a force measuring steel rod 10 is fixed with the two ends of the reaction force plate ...

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Abstract

The invention provides a shearing strength testing device for a pile-soil interface. The body structure includes a rack, an upper shearing box, a lower shearing box, a roller shaft, a hydraulic pressure control device, a horizontal jack, a vertical jack, a counter-force board, a top board, a first force-measuring steel rod, a second force-measuring steel rod, a force sensor and a force display control instrument. Compared with the prior art, a problem that inaccurate testing of the shearing force of the pile-soil interface can be solved well. The force sensor can be connected with the force measuring steel rods simply, the operability is high and the value change of the shearing force of the pile-coil interface can be tested timely. The shearing strength testing technique provided by the invention provides an effective testing means for studying mechanical characteristics of a pile and stress transmission mechanism.

Description

technical field [0001] The invention belongs to the technical field of pile foundation engineering, and relates to a device for testing the mechanical properties of the pile-soil interface, in particular to a device for testing the shear stress of the pile-soil interface. Background technique [0002] At present, there are few studies on the mechanical properties of the pile-soil interface at home and abroad. The on-site test is to install test elements on the side of the pile to actually test the lateral friction of the soil around the pile. However, this test method takes a long time, is expensive, and the test results are inaccurate. The indoor test has not yet formed a standard test method, and the test equipment is not perfect. The principle of the direct shear test device is often used. The large direct shear instrument used is generally composed of upper and lower shear boxes, vertical force loading system, and horizontal force loading system. , device providing react...

Claims

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Application Information

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IPC IPC(8): G01L5/00G01N19/00
CPCG01L5/00G01N19/00
Inventor 王永洪黄健
Owner 王永洪
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