Constitutive theories on viscoelastoplasticity and damage of frozen soil  

作　　者：何平 程国栋 朱元林 

机构地区：[1]State Key Laboratory of Frozen Soil Engineering, Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences

出　　处：《Science China Earth Sciences》1999年第S1期38-43,共6页中国科学（地球科学英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 49571019) and Key Project of the Chinese Academy of Sciences (Grant No. KZ952-J1-216).

摘　　要：The constitutive theory on the viscoelastoplasticity and damage of frozen soil is based on the continuous mechanics and thermodynamics. The basic principles of the theory, dissipation potential function and damage model are presented. The constitutive theory explains the mechanical properties of frozen soils under complicated stresses, especially under high confining pressures which make frozen soil harden and soften. The agreement between the calculated results by the constitutive theory and the experimental results of triaxial creep of frozen soil is seen to be very good.The constitutive theory on the viscoelastoplasticity and damage of frozen soil is based on the continuous mechanics and thermodynamics. The basic principles of the theory, dissipation potential function and damage model are presented. The constitutive theory explains the mechanical properties of frozen soils under complicated stresses, especially under high confining pressures which make frozen soil harden and soften. The agreement between the calculated results by the constitutive theory and the experimental results of triaxial creep of frozen soil is seen to be very good.

关 键 词：viscoelastoplasticity DAMAGE UNFROZEN water FROZEN SOIL creep. 

分 类 号：P642.14[天文地球—工程地质学]