Unidirectional shearing model case for vibration table tests

Abstract

The invention belongs to the field of civil engineering, and relates to a unidirectional shearing model case for vibration table tests. The model case mainly consists of a peripheral case body, layering side plates and springs, wherein the two ends of the layering side plates are embedded in longitudinal slide grooves formed in the model case body; a plate gap slide groove is formed between the upper and lower adjacent layering side plates; roll balls are arranged in the plate gap slide groove; the inner side of each layering side plate and the peripheral case body are connected by the springs. Through the springs, a test soil body has certain lateral pressure in the vibration process, so that the lateral soil pressure in the soil body vibration process is simulated; the layering side plates can freely slide in the longitudinal slide grooves; the influence of friction on the test soil body is reduced, so that the tests can effectively simulate the vibration mechanical property of the soil body. The unidirectional shearing model case has the advantages that the safety is realized; the structure is simple; the application is convenient.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a unidirectional shear model box used for shaking table tests. Background technique [0002] Under the action of an earthquake, the soil is subjected to dynamic loads, and the state of the soil will change, which will lead to the occurrence of geological disasters. The transmission of seismic waves makes the soil vibrate in multiple directions, and the shallow surface is mainly shear deformation, so the shaking table test generally simulates the shear deformation of soil. The shaking table test is an important means to study the seismic response. The model box can transmit the vibration to the experimental soil to simulate the interaction of the earthquake with the experimental object, so that it can reflect the response of the soil under the vibration to a certain extent. Existing shaking table model boxes generally include rigid model boxes, cylindrical flexible model boxes and s...

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