基于载荷试验的夯实水泥土桩复合地基模糊随机可靠度分析  

Fuzzy Random Reliability Analysis of Rammed Soil-cement Pile Composite Foundation Based on Load Test

作　　者：郭忠贤[1,2] 霍达[1] 张明聚[1] 

机构地区：[1]北京工业大学建筑工程学院 [2]石家庄铁道学院土木工程分院,石家庄050043

出　　处：《北京工业大学学报》2007年第4期382-387,共6页Journal of Beijing University of Technology

摘　　要：基于夯实水泥土桩复合地基载荷试验数据,以复合地基的沉降率为分析变量,考虑了变量的随机性及破坏失效的模糊性．采用概率统计方法确定变量的参数分布,用模糊统计方法确定失效准则的隶属函数,利用概率理论与模糊数学的概念建立复合地基失效的模糊失效概率和可靠度计算的方法,并通过实例分析了目前夯实水泥土桩复合地基载荷试验的可靠度指标．Based on the data of rammed soil-cement pile composite foundation loading tests, the settlement rate of composite foundation is used as an analytical variable considering its randomness and fuzziness of the failure. The membership function of the failure state is obtained by fuzzy statistic method and the parameter distributing of the variable is obtained with the probability statistic method. From the concept of probability theory and fuzzy mathematics, the calculation method of fuzzy random reliability of composite foundation losing its stability have been established and the reliability index of rammed soil-cement pile composite foundation based on load test have been analyzed through examples.

关 键 词：夯实水泥土 桩 可靠度 复合地基 模糊 随机 

分 类 号：TU473[建筑科学—结构工程]