抗滑桩设计推力的等效挠度确定方法  

Method for determination of Equivalent Deflection to Anti-slide Pile Thrust Design

作　　者：赖勇[1] 胡明军 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆市地质灾害防治工程勘查设计院,重庆400700

出　　处：《地下空间与工程学报》2011年第1期179-184,共6页Chinese Journal of Underground Space and Engineering

摘　　要：在剩余下滑力的基础上,先提出对桩前滑体进行稳定性分析,并求出各种工况下使末端滑块剩余下滑力为0或趋近于0的推力值;再利用桩身的挠度变化提出等效挠度理论,将桩前抗力与剩余下滑力差值通过等效挠度建立关系式,求出桩的设计推力。利用本文的等效挠度理论计算的推力值,不仅符合力学依据,而且通过工程实例计算发现数值与其他文献所用经验确定的数值相近,该理论可用于指导抗滑桩的设计及应用。The old methods for landslide thrust design had no clear mechanical concepts. Based on the residual thrust, this article firstly analyzed the stability of the sliding soil in front of pile, and got the thrust value in different calculation cases, when the residual thrust of last block was equal to zero or approached to zero. Then with the deflection of the pile, the equivalent deflection theory was established, a formula was set up between the residual thrust and resistance. This theory had clear mechanical concepts and the calculation values were close to those in other papers. This theory is useful for designing and utilizing anti-slide piles.

关 键 词：抗滑桩 滑坡推力 推力分布 等效挠度 

分 类 号：TU473.1[建筑科学—结构工程]