信阳师范学院学报（自然科学版）2017，Vol.30Issue(1)：150-154,5.DOI:10.3969/j.issn.1003-0972.2017.01.033
考虑桩身剪切变形的管桩水平动力阻抗
Horizontal Dynamic Impedance of a Single Pipe Pile Considering Shear Deformation
摘要
Abstract
Based on the Timoshenko beam model, the horizontal dynamic equations of a single pipe pile were es⁃tablished by considering the shear deformation of pipe pile. The forces caused by the pile around soil and the pile inner soil on the pipe pile were equivalent to Winkler spring⁃damper in order to consider the dynamic interaction between the pipe pile and soil, and the elastic coefficients and damping coefficients of Winkler spring⁃damper were also obtained by using mathematical physical method and continuous conditions of pipe pile⁃soil. The horizontal dynamic impedance of a single pipe pile considering the shear deformation was got by using the boundary conditions at the pile end and the defi⁃nition of horizontal dynamic impedance. The contrast analysis and numerical discussion showed that the absolute value of horizontal dynamic impedance of the pipe pile obtained by using Timoshenko beam model was relatively smaller than that of the Euler beam model, and the pipe pile should be more considered the shear deformation than the solid core pile.关键词
Timoshenko梁模型/剪切变形/管桩/水平动力阻抗Key words
Timoshenko beam model/shear deformation/pipe pile/horizontal dynamic impedance分类
建筑与水利引用本文复制引用
刘林超,牛洁楠,闫启方,闫盼..考虑桩身剪切变形的管桩水平动力阻抗[J].信阳师范学院学报（自然科学版）,2017,30(1):150-154,5.基金项目
国家自然科学基金项目（U1504505）；河南省科技计划项目（142102210063）；河南省高等学校重点科研项目（15A560036）；河南省高等学校青年骨干教师资助计划项目（2013GGJS-121）；信阳师范学院南湖学者奖励计划青年项目（201506）；信阳师范学院重大课题预研项目 （）
