首页 | 本学科首页   官方微博 | 高级检索  
     


Load Resistance Factor Design of Axially Loaded Pile Based on Load Test Results
Authors:Sumanta Haldar  G. L. Sivakumar Babu
Affiliation:1Research Scholar, Dept. of Civil Engineering, Indian Institute of Science, Bangalore 560012, India. E-mail: sumanta@civil.iisc.ernet.in
2Associate Professor, Dept. of Civil Engineering, Indian Institute of Science, Bangalore 560012, India (corresponding author). E-mail: gls@civil.iisc.ernet.in
Abstract:The present study proposes a procedure to determine partial factors in reliability based design format for pile foundations, considering bias as well as uncertainty in the parameters that represent soil-pile interaction. These issues are addressed using pile load-settlement test data from case studies obtained from the literature. The pile ultimate capacities are evaluated considering three different failure criteria. The uncertainties in the pile-soil interface parameters as well as pile ultimate capacity are quantified in Monte Carlo framework from the measured data by utilizing the closed form “t-z” method. Considering dead load to live load ratios as calibration points, the target reliability index is calculated based on existing code safety-checking format. The optimal partial factors are determined such that the difference between reliability index based on limit state equations expressed in terms of partial factors and target reliability index is minimum. Finally, it is observed that optimal partial factors enable rational choice of allowable load on pile foundation.
Keywords:Load and resistance factor design  Monte Carlo method  Pile load tests  Reliability  Ultimate loads  Piles  Axial loads  Load tests  
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号