Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests

A technology of contact interface and coarse-grained soil, which is applied in the direction of testing the strength of materials by applying a stable shear force, which can solve the problems of large shear path deviation, single shear direction, and inability to achieve bidirectionality at the same time, and achieve convenient control. , The effect of timely data transmission and stable operation

Inactive Publication Date: 2013-11-06
CENT SOUTH UNIV
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Problems solved by technology

At present, the large-scale shear testing machine for coarse-grained soil interface test has the following deficiencies: ①The test stress path deviates greatly from the actual shear path in road engineering, especially the shear test und

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  • Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests
  • Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests
  • Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5The large-scale two-way dynamic and static direct shear testing machine for the contact interface of coarse-grained soil provided by the present invention is composed of a measurement and control unit 1, a hydraulic servo unit 2, a loading unit 3, and a soil sample making unit 4. The loading unit 3 includes mutually perpendicular One Z-direction vertical loading frame, one X-direction horizontal loading frame and one Y-direction horizontal loading frame for loading capacity, the lower sliding guide rail 39 is provided on the load frame frame 310, and the lower sliding guide rail 39 is slid to be provided with the lower sliding guide rail connecting plate 318, the structure of the Z-direction vertical loading frame is: a loading frame column 33 is provided on the load frame frame 310, a loading frame bea...

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Abstract

The invention discloses a large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests. The machine comprises a measuring and controlling unit (1), a hydraulic servo unit (2), a loading unit (3) and a soil sample preparing unit (4). The loading unit (3) comprises a Z-direction vertical loading frame, an X-direction horizontal loading frame and a Y-direction horizontal loading frame, the three frames are perpendicular to each other, and the three frames all have independent loading ability. The hydraulic servo unit (2) comprises an X-direction horizontal loading actuator (311), a Y-direction horizontal loading actuator (312) and a Z-direction vertical loading actuator (31). The measuring and controlling unit (1) is in separate communication connections with three electro-hydraulic servo loading cylinders of the hydraulic servo unit (2). The large bidirectional dynamic/static direct-shearing machine is used in coarse-grained soil shearing performance tests, coarse-grained soil shearing performance tests on reinforced contact interface and coarse-grained soil shearing performance tests on concrete interface under the dynamic/static loading effects of simulation traffic loading.

Description

technical field [0001] The invention relates to a direct shear testing machine for coarse granular soil, in particular to a large-scale bidirectional dynamic and static direct shear testing machine for the contact interface of coarse granular soil. technical background [0002] Coarse-grained soil fillers are widely used in subgrade engineering. The shear properties of coarse-grained soils, the shear properties of the contact interface between coarse-grained soil and reinforcement, and the shear properties of the interface between coarse-grained soil fillers and pavement structures have attracted much attention. Dynamic and static direct shear tests of soil contact interface are becoming more and more important. At present, the large-scale shear testing machine for coarse-grained soil interface test has the following deficiencies: ①The test stress path deviates greatly from the actual shear path in road engineering, especially the shear test under the simulated traffic dynam...

Claims

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Application Information

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IPC IPC(8): G01N3/24
Inventor 陈晓斌张家生张佩知王江义
Owner CENT SOUTH UNIV
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