摘要
基于优化桩型的观点,将柔性桩和刚性桩组合成复合桩,充分发挥了柔性桩、刚性桩的优点又弥补了两种桩型的不足。建立了刚柔组合桩复合地基极限承载力可靠度概率分析模型。用J(?)法进行可靠度计算。通过实例对刚柔组合桩地基承栽力的可靠指标进行了分析,给出了可靠性指标与随机变量的变异性及置换率之间的关系。
Based on the optimized pile viewpoint,the flexible pile and the rigid piles are arranged in a group as compound piles,which utilizes not only fully the merits of the flexible piles and the rigid piles but also avoids the shortcomings of two kinds of pile.The reliability probabilisfie analysis models of the bearing capability of composite foundation with rigid-flexible compound piles are set up.JC method is used in the calculation of reliability index of composite foundation.Through engineering examples,the relationship between reliability index with the variability of random variables and replacement ratio of rigid piles and flexible piles are discussed.
出处
《地下空间与工程学报》
CSCD
2007年第z1期1314-1318,共5页
Chinese Journal of Underground Space and Engineering
关键词
刚柔组合桩
复合地基承载力
可靠性指标
JC法
compound rigid-flexible piles
the bearing capability of composite foundation
reliability index
JC method
