Reliability-based design methodology of multi-pile composite foundation
This paper presents an approach based on reliability to design the replacement ratio (percent coverage) of piles in a multi-pile composite foundation. The spatial variability of the soil is analyzed by using the stochastic theory and the model uncertainty is estimated by introducing a model uncertainty factor which describes the stochastic functional dependence between the true and the predicted value. In this study, the reliability of both bearing capacity and settlement of multi-pile composite foundation are analyzed to obtain the relationship between the reliability index and the replacement ratio of piles. The indices of the reliability are calculated using the Monte-Carlo simulation which can be readily applied to a nonlinear and complex performance function. A target reliability index of 3.2 is selected based on the analysis of previous studies to estimate the replacement ratios of multi-pile composite foundation. In order to facilitate the reliability-based design methodology of multi-pile composite foundation, the results of the analysis are presented graphically suitable for use by practicing engineers.
Yong LIU Jun-Jie ZHENG Jia GUO
Institute of Geotechnical and Underground Engineering, Huazhong University of Science and Technolog
国际会议
上海
英文
2007-10-18（万方平台首次上网日期，不代表论文的发表时间）