In order to investigate the effects of root content and normal stress of arbor root system on the shear strength of root-soil composite, numerical simulations were carried out for four normal stresses and five root contents of root-soil composite specimens by using the finite element numerical simulation method, and the effects of different normal stresses and root contents on the shear strength were revealed.It was shown that: the shear strength of the root-soil composite increased with the increase of root content and normal stress, respectively; the contribution of the root system to the shear strength of the soil was mainly in cohesion.The increase of normal stress weakened the strengthening effect of root system on soil; the effect of root content on shear strength was more sensitive compared to normal stress.The research results can provide a certain theoretical basis for the arbor root system to consolidate the slope and provide technical support for the subsequent development of practical engineering treatment.
In order to explore the application of image ranging technology in geotechnical test, taking simple shear test as an example, the deformation measurement method of root-soil composite was studied, and the concrete realization steps and optimization measures of image ranging technology were described. Through comparative analysis, the results show that the image ranging technology can better monitor the law of shear deformation of shear boxes, and the error is basically controlled within 10%. The research results can further enrich the displacement monitoring methods of laboratory model tests.
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