NONLINEAR DYNAMICAL CHARACTERISTICS OF PILES UNDER HORIZONTAL VIBRATION  

作　　者：胡育佳 程昌钧 杨骁 

机构地区：[1]Shanghai Institute of Applied Mathematics and Mechanics [2]Department of Mechanics Shanghai University

出　　处：《Applied Mathematics and Mechanics(English Edition)》2005年第6期700-708,共9页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China ( No. 50278051) the Shanghai Key Subject Program

摘　　要：The pile-soil system is regarded as a visco-elastic half-space embedded pile. Based on the method of continuum mechanics, a nonlinear mathematical model of pile-soil interaction was established-a coupling nonlinear boundary value problem. Under the case of horizontal vibration, the nonlinearly dynamical characteristics of pile applying the axis force were studied in horizontal direction in frequency domain. The effects of parameters, especially the axis force on the stiffness were studied in detail. The numerical results suggest that it is possible that the pile applying an axis force will lose its stability. So,the effect of the axis force on the pile is considered.The pile-soil system is regarded as a visco-elastic half-space embedded pile. Based on the method of continuum mechanics, a nonlinear mathematical model of pile-soil interaction was established-a coupling nonlinear boundary value problem. Under the case of horizontal vibration, the nonlinearly dynamical characteristics of pile applying the axis force were studied in horizontal direction in frequency domain. The effects of parameters, especially the axis force on the stiffness were studied in detail. The numerical results suggest that it is possible that the pile applying an axis force will lose its stability. So,the effect of the axis force on the pile is considered.

关 键 词：system of pile-soil interaction nonlinear visco-elasticity half-space continuum mechanics parameter study dynamical stiffness 

分 类 号：O343[理学—固体力学]