岩土工程学报2024，Vol.46Issue(1)：72-80,9.DOI:10.11779/CJGE20221125
非饱和土地基中端承桩对SH波的水平地震响应
Horizontal seismic response of end-bearing piles in unsaturated soil foundation under SH waves
摘要
Abstract
In order to study the horizontal seismic response of end-bearing piles in unsaturated soils subjected to SH waves,the free field vibration of soils induced by SH waves is firstly obtained based on the one-dimensional wave theory.Then,considering the dynamic shear modulus of soils to change with saturation,an unsaturated soil-pile coupling vibration model is established by using the three-dimensional continuum mechanics and the Euler beam model.By introducing the potential function and the separation of variables,the expressions for the interaction and amplification factors of horizontal displacement of pile head and the pile curvature ratio are derived,and verified by comparison with the previous research results.Finally,the influences of soil saturation,pile length-diameter ratio and viscous damping of soils on the horizontal seismic characteristics of piles and their variation reasons are discussed.The results show that saturation and pile length-diameter ratio have significant effects on the interaction and amplification factors of horizontal displacement of pile head only in the high frequency range.With the increase of soil viscous damping,the interaction and amplification factors increase and decrease respectively only at the resonant frequency.关键词
端承桩/非饱和土/SH波/水平振动/Euler梁模型Key words
end-bearing pile/unsaturated soil/SH wave/horizontal vibration/Euler beam model分类
土木建筑引用本文复制引用
邹新军,杨紫健,吴文兵..非饱和土地基中端承桩对SH波的水平地震响应[J].岩土工程学报,2024,46(1):72-80,9.基金项目
国家自然科学基金项目(52178329) （52178329）
湖南省研究生科研创新项目(CX20230442) （CX20230442）
