Frontiers of Structural and Civil Engineering
A simplified method for the determination of vertically loaded pile-soil interface parameters in layered soil based on FLAC
1. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China.2. Department of Geological Engineering, Southwest Jiaotong University, Chengdu 610031, China.3. Faculty of Civil Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
The numerical analysis of pile-soil interaction commonly requires a lot of trial works to determine the interface parameters and the accuracy cannot be ensured normally. Considering this, this paper first conducts a sensitivity analysis to figure out the influence of interface parameters on the bearing behavior of a single pile in sand. Then, a simplified method for the determination of pile-soil interface parameters in layered soil is proposed based on the parameter studies. Finally, a filed loading test is used for the validation of the simplified method, and the calculated results agree well with the monitoring data. In general, the simplified method proposed in this paper works with higher accuracy and consumes less time compared with the traditional trial works, especially on the determinations of interfacial cohesive and interfacial friction angle.