井筒开挖下非线性冻结壁的应力场和位移场计算  

Nonlinear Model Calculating Frozen Wall Stress and Displacement Fields in Shaft Excavation

作　　者：汪仁和[1] 李栋伟[1] 王秀喜[2] 

机构地区：[1]安徽理工大学土木工程系,淮南232001 [2]中国科学技术大学力学和机械工程系,合肥230026

出　　处：《上海交通大学学报》2005年第11期1862-1865,共4页Journal of Shanghai Jiaotong University

基　　金：安徽省自然科学基金(050440501);安徽省教育厅自然科学基金(2004kj110)资助项目

摘　　要：基于冻土力学性能试验获得的冻土应力-应变关系曲线所确定的冻土本构方程,分析人工冻结壁在井筒开挖过程中的力学特性;利用解除应力的概念,考虑冻结壁为非线性材料,推导出冻结壁的应力场和位移场的计算公式.通过对实际工程的计算分析表明,该计算方法可应用于深井冻结壁的设计计算.Based on the frozen soil constitutive equation which is determined from frozen soil stress-strain curve acquired from the mechanical characteristic experiment of frozen soil ,the mechanical characteristics of artificial frozen wall in the shaft excavation were analyzed. Using the stress-relieving conception , considering artificial frozen wall as elastic-plastic material, the calculation formula of artificial frozen wall＇s nonlinear stress and displacement fields was deduced. The calculation result of a project example proves the correctness of the calculation method which is applicable to the calculation in deep artificial frozen wall.

关 键 词：冻结壁 非线性 本构方程 应力场 位移场 

分 类 号：TD265.3[矿业工程—矿井建设]