用旁压试验设计西部山区抗滑桩  

The Design of Anti-sliding Pile by Pressuremeter Test in Mountainous Areas

作　　者：孙勇[1] 

机构地区：[1]喀斯特环境与地质灾害防治教育部重点实验室贵州大学,贵阳550003

出　　处：《工程勘察》2007年第11期4-7,共4页Geotechnical Investigation & Surveying

基　　金：贵州大学博士基金项目(博基2004015)

摘　　要：本文通过大量实践和理论分析,得到了用旁压试验确定水平受力桩水平地基系数的方法和公式。提出用幂函数模拟水平地基系数,用逐步回归的方法,除对回归曲线进行显著性检验外,还引入对曲线拟合影响较显著的变量,同时剔除对曲线拟合影响不显著的变量,获得了较好的效果。推导出幂函数形式下的水平地基系数的水平受力桩弹性地基梁法的解析解公式。同时给出了计算实例,说明在西部地区用旁压试验设计抗滑桩是可行的,值得在各地不断总结经验和应用。The methods and formulae of determining horizontal direction foundation coefficient of the anti-sliding pile by pressuremeter test based on a great deal practice and theoretical analysis are obtained in this paper. The simulation of horizontal direction foundation coefficient with power function was proposed and the power function was determined by stepwise regression. The significance of regression equation and regression coefficient was calculated and a optimum power function was obtained, The analytic solution of anti-sliding pile was deduced under this kind of foundation coefficient, In the end, through the result of engineering, the design of anti-sliding pile by pressuremeter test is considered to be feasible, It is good for widely summarizing experience and using these methods.

关 键 词：抗滑桩 旁压试验 地基系数 曲线拟合 解析解 

分 类 号：TU473[建筑科学—结构工程]