岩土工程学报2023，Vol.45Issue(z2)：73-78,6.DOI:10.11779/CJGE2023S20004
水平荷载作用下饱和土与单桩的相互作用动力响应分析
Dynamic response analysis of saturated soils and single pile under horizontal loads
摘要
Abstract
To study the influences of the characteristics of saturated soils on the horizontal dynamic impedance of a pile,a computational model for the interaction between the saturated soils and the pile is established.First,based on the Biot theory of saturated porous media,considering the existence of the vertical displacement and vertical strain of the soil,using the Helmholtz decomposition law to introduce a potential function,the analytical solutions for the displacement and stress of the saturated soils are obtained.Secondly,using the interaction between the saturated soils and the pile,the vibration differential equation for the pile-saturated soil coupling is established,and then the analytical solutions for the impedance and damping of the pile are obtained.Through a numerical example,compared with those of the existing models,the results of the proposed model are verified.Through the parameter analysis,the influences of porosity,compressibility,and liquid bulk modulus of the saturated soil on the dynamic impedance of the pile head are studied and its corresponding damping effects.It is found that the porosity,compressibility and liquid bulk modulus of the saturated soils have a great influence on the dynamic impedance of the pile head and its corresponding.关键词
饱和土/水平振动/桩基础/动力刚度Key words
saturated soil/horizontal vibration/pile foundation/dynamic impedance分类
建筑与水利引用本文复制引用
曹小林,周凤玺,戴国亮..水平荷载作用下饱和土与单桩的相互作用动力响应分析[J].岩土工程学报,2023,45(z2):73-78,6.基金项目
国家自然科学基金项目(11962016,51978320) （11962016,51978320）
兰州理工大学红柳优秀青年人才支撑计划项目 （）
甘肃省高校教师创新技能基金项目 （）
