岩土力学Issue(5)：1348-1356,9.
饱和土中管桩的水平动阻抗研究
Study of lateral dynamic impedance of pipe pile in saturated soil
摘要
Abstract
In order to investigate the influence of main parameters of pile and soil on the lateral vibration of pipe pile in saturated soil, the soil is divided into saturated soil around pile and inner pile saturated soil, and coupling dynamic model of the saturated soil-pipe pile is established by using the control equations of theory of porous medium. By considering the boundaries of saturated soil around pile and inner pile saturated soil, the lateral vibrations of saturated soil around pile and inner pile core saturated soil are solved with the uncoupling method of potential function. The horizontal vibration of pipe pile in saturated soil is also solved by considering the forces of saturated soil around pile and inner pile saturated soil acting on pipe pile, and the lateral dynamic impedance of the pipe pile at pile head is obtained;the influence of main parameters on the lateral vibration of pipe pile in saturated soil is also analyzed. The research results indicate that the influence of the inner and outer radii of pipe pile, shear modulus ratio, Poisson’ ratio of pile around saturated soil and pile core saturated soil on the lateral dynamic impedance of pipe pile in saturated soil is great; fluid-solid coefficient ratio has a certain influence on lateral dynamic impedance at low frequency;and the ratio of damping ratio has a certain influence on the damping factor of lateral dynamic impedance.关键词
饱和土/管桩/水平振动/动力阻抗/剪切模量Key words
saturated soil/pipe pile/lateral vibration/dynamic impedance/shear modulus分类
建筑与水利引用本文复制引用
刘林超,闫启方..饱和土中管桩的水平动阻抗研究[J].岩土力学,2014,(5):1348-1356,9.基金项目
河南省科技发展计划项目（No.112300410105）；河南省科技发展计划项目（No.122300410309）；河南省高等学校青年骨干教师资助计划项目（No.2013GGJS-121）；信阳师范学院重大课题预研项目（No.2013ZDYY19）；信阳师范学院青年骨干教师资助计划（No.12007）。 （）
