Uniaxial tension and soil beam bending tester

Abstract

A uniaxial tension and soil beam bending tester comprises a motor; one side of the motor is provided with an electric shifting platform; the motor is connected with a rigid transmission bar; the rigidtransmission bar is connected with a slide rail guide block; the slide rail guide block is connected with the rigid transmission bar; the rigid transmission bar is provided with a force sensor; the rigid transmission bar is connected with a loading unit arranged on a loading platform; a shift sensor is fixed on a primary platform; the shift sensor, the force sensor and a data collection card areconnected; soil body is fixed on the loading unit; velocity is set; the motor is used for driving the electric shifting platform; the slide rail guide block drives the soil body on the loading platform to perform the test; the data collection card collects and stores measurement values via the shift sensor and the force sensor; and the invention has the characteristics of low cost, stable loading,slow loading speed, settable and controllable velocity.

Description

technical field [0001] The invention belongs to the technical field of mechanical property testing, in particular to a uniaxial tension and soil beam bending tester. Background technique [0002] The crack problem of compacted clay is a hidden danger and an important form of damage that often occurs in geotechnical structures such as earth-rock dams. It is one of the technical problems that threaten the safety of geotechnical structures and need to be solved urgently. Therefore, the evaluation of soil tensile stress-strain characteristics has important engineering application value. Its rationality is related to whether it can correctly evaluate the safety of geotechnical structures. Axial tension and soil beam bending test are currently the most direct and effective test methods for measuring the tensile characteristic parameters of compacted clay. It can measure the tensile characteristic parameters such as the tensile strength and ultimate tensile strain of the soil. It ...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the testing equipment for soil tensile properties researched and developed at home and abroad has the following deficiencies: ① Most of them have simple functions and rough experimental methods; The complete and continuous stress-strain curve of the body; ③ susceptible to the influence of gravity; ④ The collection of test data relies on weight weighing and micrometer readings, and only a few sparse points in the test process can be obtained, and the overall accuracy is poor; ⑤ Function Single, uniaxial tensile equipment can only perform uniaxial tensile tests, soil beam bending equipment can only perform bending tests

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