考虑温度影响的岩土材料高阶屈服函数

doi:10.13722/j.cnki.jrme.2018.0542

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Abstract A high order dilatancy equation for considering the effect of the temperature on the dilatancy behaviors of clays is presented in the framework of critical state mechanics. Two material parameters related to the temperature are introduced in the dilatancy equation. Integrating the high order dilatancy equation will lead to a new yield function which is flexible to represent the experimental data of clays，and yield functions of the original and modified cam clay models can be regarded as the special cases of the new yield surface. Considering the influence of the temperature on the pre-consolidation pressure of clays，a new yield surface was obtained. Comparisons between the prediction results and the experimental datum were performed，and a good agreement between them was observed. It is shown that increasing temperature will lead to the yield surface of clays shrinking and，at the same time，the plastic dilatancy factor will decrease gradually. The proposed high order dilatancy equation and the yield surface related to the temperature can show an insight into the thermodynamic behavior of clays.

Key words： soil mechanics stress-dilatancy relation yield surface temperature pre-consolidation pressure

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	Articles by authors
	LI Haichao1
	2
	ZHANG Sheng1
	2
	SHEN Yuan3

Cite this article:

LI Haichao1,2,ZHANG Sheng1, et al. A high order yield function for geo-materials considering the effect of temperature[J]. , 2018, 37(12): 2795-2803.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2018.0542 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/I12/2795

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