软土地基静力压桩的挤土效应及其防治  

Squeezing Effect of Static Pressure Pile on Soft Clay Foundation and Preventive Measures

作　　者：郭栋[1] 贺可强[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《烟台大学学报（自然科学与工程版）》2005年第2期151-156,共6页Journal of Yantai University(Natural Science and Engineering Edition)

摘　　要：分析了软土地基中静压桩的挤土效应机理,依据圆孔扩张理论和有效应力原理,推导出塑性区影响范围、桩对土体的挤压应力、孔隙水压力估算公式等.最后结合工程实践,提出了防治或减轻挤土效应对周围工程环境影响的一些有效实用的措施.The squeezing effect of static pressure pile on soft clay foundation is analysed briefly. The radius of plastic area, the maximum compress stress caused by driving pile ,and the pore water stress can be concluded by using the cavity expansion method and the effective stress theory. On the basis of the engineering practice, several efficient and practical measures to prevent or weaken the effect on surrounding engineer are put forward.

关 键 词：软土 静力压桩 挤土效应 圆孔扩张理论 

分 类 号：TU43[建筑科学—岩土工程]