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YE Sheng, ZHANG Yu, TIAN Qinyu, LIU Keji, CHAI Zhaolong, WANG Guanqiao, ZHANG Si. A Nonlinear Lateral Stress-Strain Model of Intact Loess in Plane Strain Unloading Conditions[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(3): 231-236. doi: 10.3724/j.gyjzG23010307
Citation: YE Sheng, ZHANG Yu, TIAN Qinyu, LIU Keji, CHAI Zhaolong, WANG Guanqiao, ZHANG Si. A Nonlinear Lateral Stress-Strain Model of Intact Loess in Plane Strain Unloading Conditions[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(3): 231-236. doi: 10.3724/j.gyjzG23010307

A Nonlinear Lateral Stress-Strain Model of Intact Loess in Plane Strain Unloading Conditions

doi: 10.3724/j.gyjzG23010307
  • Received Date: 2023-01-03
    Available Online: 2025-06-07
  • Publish Date: 2025-03-20
  • Loess is widely distributed in China. In engineering practice, plane strain unloading engineering problems such as foundation excavation, slope excavation and retaining wall will be encountered. Through the true triaxial apparatus of Xi 'an University of Technology modified by plane strain, the study of the lateral unloading stress path in plane strain condition was simulated, and the plane strain unloading shear test of intact loess was carried out. The nonlinear evolution law of lateral stress-strain of intact loess under the lateral unloading stress path of plane strain was revealed, and a composite exponential function was proposed to describe the lateral unloading stress-strain relations of intact loess, and the solution method of model parameters was obtained. The model reflected the influence of moisture content and confining pressure on the lateral stress-strain relations. The parameter solution was simple, and the calculation results were in good agreement with the experimental data, which showed the rationality and accuracy of the established composite exponential model. It can provide a reference for the lateral deformation prediction of unloading loess engineering.
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