考虑损伤效应的冻粘土蠕变本构理论研究Study on frozen soil creep constitutive of theory accounting for damage
李栋伟,汪仁和
LI Dong-wei,WANG Ren-he(Department of Civil Engineering of Anhui University of Science and Technology
摘要(Abstract)：
用简单的屈服函数作为冻土塑性损伤变量,对西源模型中的粘塑性蠕变量进行损伤修进。通过相关推导得到了冻土粘弹塑性损伤本构方程。通过用户子程序将此本构模型嵌入到大型商业有限元软件ADINA中。有限元计算结果表明:考虑损伤的冻土本构模型能较好的模拟加速蠕变阶段,可用于深井工程实践。
The simple yield standard is used to determine the damage variables frozen soil,therefore Xiyuan Model viscoplastic creep is repaired.The constitutive function of the viscoelastic plastic damage-coupling is deduced.The viscoelastic plastic damage-coupling constitutive model for geo-materials is embeded into the commercial FEM software ADINA as a user's subroutine.FEM analysizing suggest that the model is of the feature of the non-linear accelerative creep frozen soil,and can be used for engineering practice.
关键词(KeyWords)：
冻土;粘弹塑损伤;本构方程;屈服函数
frozen soil;viscoelastic plastic damage;constitutive function;simple yield function
基金项目(Foundation): 安徽省自然科学基金(050440501)资助
作者(Author):
李栋伟,汪仁和
LI Dong-wei,WANG Ren-he(Department of Civil Engineering of Anhui University of Science and Technology
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