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NONLINEAR DYNAMICAL CHARACTERISTICS OF PILES UNDER HORIZONTAL VIBRATION
作者姓名:胡育佳  程昌钧  杨骁
作者单位:Shanghai Institute of Applied Mathematics and Mechanics,Department of Mechanics Shanghai University,Shanghai Institute of Applied Mathematics and Mechanics,Department of Mechanics Shanghai University,Shanghai Institute of Applied Mathematics and Mechanics,Department of Mechanics Shanghai University Shanghai 200072,P.R.China,Shanghai 200072,P.R.China,Shanghai 200072,P.R.China
基金项目: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.

关 键 词:非线性力学  水平变量  参数研究  管道-土壤界面
收稿时间:12 December 2003

Nonlinear dynamical characteristics of piles under horizontal vibration
Hu Yu-jia,Cheng Chang-jun,Yang Xiao.NONLINEAR DYNAMICAL CHARACTERISTICS OF PILES UNDER HORIZONTAL VIBRATION[J].Applied Mathematics and Mechanics(English Edition),2005,26(6):700-708.
Authors:Hu Yu-jia  Cheng Chang-jun  Yang Xiao
Institution:Shanghai Institute of Applied Mathematics and Mechanics; Department of Mechanics,Shanghai University, Shanghai 200072, P. R. China
Abstract: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.
Keywords:system of pile-soil interaction  nonlinear visco-elasticity half-space  continuum mechanics  parameter study  dynamical stiffness
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