1. School of Civil Engineering, Central South University, Changsha 410072, China; 2. National Engineering Laboratory for High-Speed-Railway Construction, Central South University, Changsha 410072, China; 3. Guangzhou Power Supply Co., Ltd., Guangzhou 510620, China; 4. Faculty of Architectural, Civil Engineering And Environment, Ningbo University, Ningbo 315211, China; 5. Department of Civil Engineering, Nagoya Institute of Technology, Nagoya 4668555, Japan
Abstract：The impact of temperature on the large deformation of nuclear waste disposal, geothermal extraction and storage under cyclic load is should be considered. In the framework of super-subloading surface, the concept of equivalent stress is introduced to establish a constitutive model. The model can represent the mechanical characteristics of saturated clay affected by thermo-cyclic loads. Based on the experimental data, the model is validated. The results show that the constitutive model can be used to calculate the experimental data. It can describe the alternating mobility of saturated soils at different temperatures by controlling the parameters of the model, and it is revealed that the increase of temperature is the inherent resistance to deformation mechanism. The model is of reference significance for the mechanical properties of saturated sand under temperature and cyclic loads.
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