被动侧向受荷桩模型试验和颗粒流数值模拟研究.pdf

TU473 A 2007 1957 E-mail: tjuzj@ 2D Model tests and PFC numerical analysis on laterally loaded passive piles ZHOU Jian13QI Bin13ZENG Qing-you2 (1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Fujian Communication Planning Design Institute, Fuzhou 350004, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China) Abstract: Experimental and numerical studies on pile-soil interaction mechanism of passive laterally loaded free-head short piles in sand were presented. Physical model tests were performed using loose, medium and dense sand to investigate the relationship between retaining wall loading and displacement, the response low of displacement of pile top to the displacement of retaining wall as well as the load transfer mechanism for piles and soil. A two-dimensional discrete element method (Particle Flow Code in Two Dimensions) was used to carry out the simulation of the relationship between the stress and the displacement of soil and piles owing to the pile-soil interaction behavior during the loading procedure. Experimental results were compared with those from numerical analysis. The study would be h