Automatic drive test system

Abstract

The invention discloses an automatic drive test system. According to the system, a device bracket, a drive mechanism, an automatic positioning mechanism and a control mechanism are arranged, wherein the device bracket is provided with a cavity for receiving a box type sampler to be detected, the upper surface of the device bracket is provided for placing the positioning mechanism, the drive mechanism is arranged on the positioning mechanism and is provided with a cross plate test assembly, the cross plate test assembly is inserted into clay to be detected and measures the shear strength, and the control mechanism is provided with a control circuit and is provided for outputting a starting test command to the drive mechanism and real-timely reading the rotation angle value of the cross plate test assembly and the corresponding torque value. According to the present invention, the automatic drive test system relates to, but is not limited to clay test equipment; and with the automatic drive test system, the drawbacks in the prior art can be effectively overcome, the shear strength test of the soft clay with the high water content can be achieved, and the precision of the final test result can be effectively ensured.

Description

technical field [0001] The present application relates to, but is not limited to, clay testing equipment, especially an automatic drive testing system. Background technique [0002] In the prior art, the cross plate shear test is a test for measuring the undrained shear strength and sensitivity of saturated soft cohesive soil with a cross plate, which belongs to the original strength test; Press it into the soft soil at the bottom of the hole and rotate it at a uniform speed. Through a certain measuring system, measure the moment required for its rotation until the soil is destroyed, so as to calculate the shear strength of the excavated soil. In the above specific test process, the cohesive soil to be tested needs to provide sufficient support and reaction force to ensure the smooth progress of the test. [0003] At present, in the marine deep-water environment, the shallow soil layer is weak clay with high water content, and the shear strength of this type of soil is an i...

AI Technical Summary

Problems solved by technology

However, in the specific test process of the above-mentioned shear strength, the shear strength of the shallow soft clay cannot provide sufficient supporting reaction force for the test equipment of the conventional in-situ cross plate shear test; The plate shear test equipment cannot realize the shear strength measurement of the above shallow soil layer

[0004] Based on this, those skilled in the art also try to measure the above-mentioned soft clay with high water content in other ways; specifically, a certain column of clay to be tested is taken from the box sampler through a plastic tube, and the clay is limited by the wall of the plastic tube. To avoid large-scale flow, and then measure the shear strength of the above-mentioned clay to be tested in the plastic tube; the above-mentioned test process has the following disadvantages: the test is a manual point-by-point test, and only the peak value of the shear strength can be recorded. Continuous tracking test cannot be realized; the test is a vertical orientation test, horizontal positioning cannot be realized, and multi-point testing on the same plane cannot be realized, and the test result error is large; the string sampling operation of plastic pipe involves secondary sampling operation, and the clay to be tested The disturbance is large, which affects the accuracy of the final test result

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