基于Sevostianov理论的冻土本构模型  

Constitutive model for frozen soil based on Sevostianov's inclusion theory

作　　者：芦琴[1,2] 张瑞雪[3] 

机构地区：[1]杨凌职业技术学院水利工程学院,陕西杨凌712100 [2]西北农林科技大学水工程安全与病害防治研究中心,陕西杨凌712100 [3]河北大学建筑工程学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2013年第5期459-463,共5页Journal of Hebei University(Natural Science Edition)

基　　金：陕西省农业科技创新项目(2011NXC01-20)

摘　　要：利用Sevostianov夹杂理论及实验成果给出各向同性基体的颗粒夹杂型复合材料的力学、热学性能与夹杂体分布之间的函数关系,即冻土的横观各向同性弹性本构模型;推导出冻土的弹性本构与冰晶体回转对称轴方向及含冰率的解析表达,并拟合了冻土弹性解析表达式中待定参数与温度的函数关系,为冻土的数值计算提供了理论支撑.Based on Sevostianov＇s inclusion theory and experiment data, this paper gave the trans- versely isotropic elastic model for frozen soil, which expressed the relations between the microstructures of the inclusions and the physical prosperities, e. g. , mechanics properties and thermal conductivity; conclu- ded the function to express the relationship between thefrozen soil elasticity and the axial directions of ice granular and the ice volume ratio; fitted the undetermined coefficients as functions of the temperature of the frozen soil. The results can be used in practical engineering of frozen soil theoretically and numerically.

关 键 词：冻土 夹杂理论 横观各向同性 

分 类 号：P314.5[天文地球—固体地球物理学]