摘要
根据Vanmarche提出的土层概率模型,以散体材料桩为例建立了复合地基极限承载力可靠度概率分析模型,模型中考虑了基础性状的影响,采用JC法进行可靠度计算。通过实例讨论了基本变量的变异性、置换率、桩间土发挥系数、滑动面与水平面夹角、桩体材料的内摩擦角等对可靠度指标的影响。
A probability model for bearing capacity of composite foundation with granular soil pile is developed,which considers the effects of depth and shape of the foundation. JC method is used to calculate the reliability index. The effects on reliability index of variety coefficient of random variables,replacement ratio,load-bearing factor of soil,slip plane angle,and internal friction angle of soil are analyzed.
出处
《工程力学》
EI
CSCD
北大核心
2007年第z1期108-113,共6页
Engineering Mechanics
基金
河北省建设厅资助(2005-222)
关键词
土层概率模型
散体材料桩
复合地基
极限承载力
可靠性指标
probability model
granular soil pile
composite foundation
ultimate bearing capacity
reliability index
