Crawler belt-soil multi-axis dynamic load loading test bench

Abstract

The invention discloses a crawler-soil multi-axis dynamic load loading test bed, which belongs to the field of mechanical loading equipment, can simulate various loads of extrusion, shearing and torsion applied to the surface of soil by a crawler walking device, and is measurable, controllable and adjustable in load combination form, loading speed and alternating frequency. Distribution and deformation of internal force of the soil under the action of crawler load and relative displacement between the crawler and the soil can be detected, the problems that in the prior art, loading forms are limited, and the mechanical state between the crawler and the soil under the actual condition is difficult to simulate are solved, the loading forms of the loading test bed are enriched, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the field of mechanical loading equipment, in particular to a crawler-soil multi-axis dynamic load loading test bench. Background technique [0002] The load on the ground of the crawler traveling mechanism during operation includes vertical extrusion load, horizontal shear load and torsional load. The external load on the soil is multi-axis composite, and due to the movement of the crawler traveling mechanism, the load is dynamic and time-varying. - The mechanical state of the soil during interaction, the internal stress distribution of the soil under the action of multi-axial dynamic loads, the deformation amount, the relative displacement of the crawler-soil and other key ground mechanics laws are difficult to detect through actual tests. [0003] In the prior art solutions, such as the patent document with the publication number CN103076230B, a test method and test device for the mechanical properties of the soil-structure ...

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Problems solved by technology

[0003] Among the existing technical solutions, such as the patent document with the publication number CN103076230B discloses a test method and test device for the mechanical properties of the soil-structure contact surface, which realizes the extrusion and shear loading of the columnar soil sample. The publication number is The patent literature of CN101949800A discloses a compression-torsion multiaxial loading test machine, which realizes extrusion and torsional loading of columnar soil samples. The uniaxial and biaxial loading of rock and soil samples is limited to extrusion load, and shear and torsion cannot be performed. In summary, the existing implementation schemes cannot achieve vertical extrusion, horizontal shear, and torsional multiaxial Dynamic loading is carried out, and when the crawler walking device is in contact with the soil, the load is only applied on the soil surface, and the other directions of the soil are regarded as semi-infinite areas, and the surrounding areas are not subject to external loads. The technical solutions of the existing test benches all use containers to seal the soil. Does not match the actual loading situation

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