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.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
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
关键词
冻结壁
非线性
本构方程
应力场
位移场
frozen wall
nonlinear
constitutive equation
stress fields
displacement fields
