1. Geotechnical Engineering Research Center, Tianjin Research Institute for water transport engineering, M.O.T., Tianjin 300456, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 3. Nanjing Water Planning and Designing Institute Co., Ltd., Nanjing 210006, China; 4. Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
Abstract:Based on a liquefied natural gas terminal wharf project in Tianjin, the finite element software ABAQUS is used to study the mechanical characteristics of pile groups of wharf foundation under lateral and vertical cyclic loadings, and the influence of cyclic period of lateral and vertical loadings is discussed. The results indicate that under the lateral and vertical cyclic loadings, the stress of piles redistributes, the shaft force of piles increases, and the side resistance decreases. The increase amplitude of shaft force row piles is the largest. The range of side resistance is mainly concentrated in the area of more than 1/3 of pile length. The cyclic period has great influence on the stress redistribution: with change of the cyclic period, load distribution of piles adjustes gradually, the shaft forces of front and back row piles increase, and the shaft forces and side resistances of the middle row piles decrease. When the cyclic period reaches a certain value, the shaft forces and side resistances of piles no longer change and tend to a steady state.
左殿军, 陈龙, 田志伟, 齐昌广. 双向循环荷载作用下码头群桩基础受力特性数值分析[J]. 岩土工程学报, 2015, 37(zk1): 51-55.
ZUO Dian-jun, CHEN Long, TIAN Zhi-wei, QI Chang-guang. Numerical study on mechanical characteristics of pile groups of wharf foundation under lateral and vertical cyclic loadings. Chinese J. Geot. Eng., 2015, 37(zk1): 51-55.
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