东南大学学报（英文版）2025，Vol.41Issue(4)：401-411,11.DOI:10.3969/j.issn.1003-7985.2025.04.001
倾斜可液化场地-群桩基础-上部结构体系桩-土相互作用及土压力演化规律分析
Soil-pile interaction and evolution of soil pressure in an inclined liquefiable site-pile group-superstructure system
摘要
Abstract
This study presents a numerical simulation of large-scale shaking table tests on a superstructure supported by a pile group installed in an inclined liquefiable site,fo-cusing on nonlinear interactions between piles and the soil.A three-dimensional finite element model of a soil-pile-superstructure system is developed using OpenSeesMP.The temporal and spatial evolution of the radial soil pressure around the pile is evaluated in both liquefied and nonlique-fied sites.Results show that the soil pressure around the pile is significantly influenced by site inclination and soil lateral spreading.In liquefied sites,the soil pressure in the ex-truded zone of the upstream pile is significantly higher than that in the diffused zone.However,higher pressure occurs in the diffused zone for nonliquefied sites.Correspond-ingly,the liquefaction state significantly influences the force characteristics of the pile group system.Additionally,the group effect is more pronounced in liquefied sites.The results also indicate that the soil pressure distribution around the piles is closely related to the relative pile-soil displace-ment and reveals different on-pile force mechanisms under varying site conditions.These findings offer valuable in-sights into the seismic design of pile foundations in inclined liquefied sites.关键词
桩-土相互作用/液化/径向土压力/群桩效应/振动台试验/OpenSees数值模拟Key words
pile-soil interaction/liquefaction/circumferen-tial soil pressure/group pile effect/shaking table tests/OpenSees numerical simulation分类
建筑与水利引用本文复制引用
许成顺,王博,EL NAGGAR M.Hesham,李硕,贾肖芳,张正哲..倾斜可液化场地-群桩基础-上部结构体系桩-土相互作用及土压力演化规律分析[J].东南大学学报（英文版）,2025,41(4):401-411,11.基金项目
The National Science Fund for Distinguished Young Scholars(No.52225807). （No.52225807）
