超载预压加固软基的边界面弹塑—粘塑性模型研究  

Elasticity and Plasticity Model Study of Boundary Surface of Soft Foundation after Overload and Precompress Reinforcement

作　　者：孙吉主[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院 武汉市430070

出　　处：《勘察科学技术》2005年第5期6-8,共3页Site Investigation Science and Technology

基　　金：国家自然科学基金重点项目资助研究(59738160)

摘　　要：在BIOT固结理论中使用简化的边界面弹塑—粘塑性模型,对超载预压法处理公路软基全过程的变形和孔压进行数值计算。与理想弹塑性模型计算的结果相比,使用边界面模型计算的沉降量较大,也更接近实际观测值,并分析了具体原因。By using simplified elasticity and plasticity model of boundary surface in BlOT theory, numerical calculation is conducted for deformation and pore pressure of road soft foundation ＇after overload and precompress reinforcement treatment. Compared with ideal model calculation, the settlement calculated by boundary surface model is large ones and more similar to practical observations. And the causes for that is analysed.

关 键 词：超载预压 边界面 粘塑性 耦合 粘塑性模型 超载预压法 边界面 加固软基 BIOT固结理论 模型计算 理想弹塑性 数值计算 公路软基 

分 类 号：U416.1[交通运输工程—道路与铁道工程]