Reliability assessment of bearing capacity of pile foundation based on CPTU data
CAI Guo-jun1, LIU Song-yu1, ANAND J Puppala2, TONG Li-yuan1
1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China; 2. Department of Civil Engineering, University of Texas at Arlington, Arlington, TX 76019-0308, USA;
Abstract：A method to evaluate the axial capacity of pile foundation is proposed in which the pile unit skin friction and the unit end bearing resistance are computed from the sleeve friction, excess pore water pressure and effective cone resistance, qe. The component reliability indices based on the ultimate limit state (ULS) and the serviceability limit state (SLS) criteria and the system reliability indices combining ULS and SLS are evaluated. Reliability analysis is conducted to evaluate the performance of the proposed CPTU method. The results show that the proposed CPTU method has higher reliability indices than other three methods. Further assessment of CPTU-based pile capacity in other Jiangsu clay sites should be made. The CPTU method is simple, fast and independent of all operators' subjective influence. Therefore, it is notably suitable for use in pile engineering practice.
蔡国军，刘松玉，ANAND J Puppala，童立元. 基于CPTU测试的桩基承载力可靠性分析[J]. 岩土工程学报, 2011, 33(3): 404-.
CAI Guo-jun, LIU Song-yu, ANAND J Puppala, TONG Li-yuan. Reliability assessment of bearing capacity of pile foundation based on CPTU data. Chinese J. Geot. Eng., 2011, 33(3): 404-.
