计算力学学报2026，Vol.43Issue(1)：108-115,8.DOI:10.7511/jslx20241022001
横观各向同性土中缺陷桩振动研究
Study on vibration of defective piles in transversely isotropic soil
摘要
Abstract
Based on the constitutive relation of transversely isotropic materials,the vibration characteristics of defective piles in viscoelastic transversely isotropic soil are studied.Firstly,the defective piles and soil are segmented and layered according to the distribution of piles and soil layers,and a coupled vibration model of defective piles and transversely isotropic soil is established.Combined with boundary conditions and initial conditions,the method of separation of variables is used to solve the dynamic equation of transversely isotropic soil,and then the dynamic coupling equation of soil and pile is solved.The dynamic impedance function and admittance function of the pile top are obtained by the impedance function recursion method,and then the time domain response solution of the pile top velocity is obtained by inverse Fourier transform.The theoretical solution is subjected to degradation analysis,and the degradation results are completely consistent with the isotropic material solution,verifying the correctness of the theoretical solution.Finally,the influence of the main parameters such as the radius,length,burial depth of the defective section of the pile body and the transversely isotropic soil parameters on the defective pile is analyzed,and finally the coupling vibration mechanism of transversely isotropic soil and defective pile is revealed.关键词
横观各向同性/缺陷桩/纵向振动/桩-土耦合作用/解析解Key words
transversely isotropic/defective pile/longitudinal vibration/pile-soil coupling/analytical solu-tion分类
建筑与水利引用本文复制引用
杨冬英,缪怡杰,陆勇,李学东..横观各向同性土中缺陷桩振动研究[J].计算力学学报,2026,43(1):108-115,8.基金项目
国家自然科学基金(51508369) （51508369）
江苏省自然科学基金(BK20150289) （BK20150289）
江苏省高等学校基础科学(自然科学)研究面上项目(22KJB170020)资助 （自然科学）
