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| Analysis of shear properties of sandy soil based on hypoplastic constitutive model |
| WANG Zhi1, WU Yang1, ZHU Xianfa1, DENG Renming2, ZHANG Bingli2
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1. Nantong Urban Rail Transit Co., Ltd., Nantong 226007, Jiangsu, China;
2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
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Abstract In order to explore the shear characteristics of sand, the finite element method was used to simulate the triaxial compression experiment of sand with a subplastic constitutive model and the accuracy was verified. The model was used to carry out some analysis on the influence of the initial conditions of the sandy soil on the shear mechanical properties of the sandy soil. The research results showed that the model had high accuracy and could reflect the stress-strain relationship of sand under triaxial compression experiments, and the confining pressure and compactness of sand had significant effects on the hardening characteristics and shearing phenomenon of sand during shearing impact. Based on the simulation results, the effects of various parameters in the hypoplastic constitutive model on the deviatoric stress and volumetric strain during the shearing process of sand were further analyzed.
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Received: 30 August 2022
Published: 20 December 2022
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