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.
出处
《地下空间与工程学报》
CSCD
北大核心
2011年第1期179-184,共6页
Chinese Journal of Underground Space and Engineering
关键词
抗滑桩
滑坡推力
推力分布
等效挠度
anti-slide pile
landslide thrust
distributions of landslide thrust
equivalent deflection
