Shear creep tester and test method for in-situ slip band soil

By designing a shear creep tester for in-situ sliding soil, the problem of difficulty in loading direction and stability control in the shear creep test of in-situ sliding soil is solved, and the ultrasonic probe detects the evolution of the mesoscopic structure, effectively analyzes the shear strength and creep behavior of the soil sample, supporting soil stability evaluation and anti-landslide structure design.

CN119715182APending Publication Date: 2025-03-28CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Application Number
CN202411761246.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the existing in-situ slip soil shear creep test, loading direction and stability control are difficult, and there is a lack of devices to detect the evolution of mesoscopic structures, which limits the study of macro-metaphors integration deterioration evolution.

Method used

A shear creep tester including a shear box, a shear load system, a normal load system and a ball row structure was designed. The shear force and vertical pressure applied to the soil sample are accurately controlled through the shear load system and the normal load system, and the ultrasonic probe is used to detect the mesoscopic structure evolution of the soil.

Benefits of technology

It realizes effective control of shear creep tests for in-situ slip soil, can accurately measure the shear displacement and normal compression of the soil sample, analyze the shear strength, compression characteristics and creep behavior of the soil sample, and supports the evaluation of soil stability and design of anti-landslide structures.

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Abstract

The invention discloses a shear creep tester for in-situ slip zone soil and a test method, and relates to the technical field of rock-soil in-situ tests.The shear creep tester comprises a shear box, a shear load system, a normal load system and a ball row structure, and the shear box comprises an upper pressure box and a lower pressure box; the shear load system comprises a first spherical base, a shear stiffness self-adaptive loading assembly and a shear displacement sensor, and the shear displacement sensor is used for measuring the shear displacement of the shear box; the normal loading system comprises a second spherical base, a normal stiffness self-adaptive loading assembly and a normal displacement sensor, and the normal displacement sensor is used for measuring the normal compression amount of the soil body sample in the shear box; the ball row structure is suitable for reducing friction force between the normal rigidity self-adaptive loading assembly and the upper pressure box. The problems that the loading direction and the loading stability are controlled in an existing in-situ slip band soil shear creep test, and a slip band soil microstructure evolution detection device is lacked are solved.
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