车桥耦合系统的非线性动力分析  

NONLINEAR DYNAMIC ANALYSIS OF VEHICLE-BRIDGE COUPLED INTERACTION SYSTEM

作　　者：肖勇刚[1] 朱素红[2] 

机构地区：[1]长沙理工大学桥梁与结构工程学院,长沙410076 [2]南昌工程学院土木工程系,南昌330099

出　　处：《振动与冲击》2007年第8期104-108,共5页Journal of Vibration and Shock

摘　　要：研究了车桥耦合系统的非线性动力特性。基于哈密尔顿能量原理和欧拉-贝努利梁假设,考虑梁的几何非线性影响,建立了移动振动车辆模型下桥梁的耦合非线性振动方程,应用伽辽金法和Runge-Kutta法对方程进行求解,算例中探讨了车辆质量、车速、桥梁阻尼和桥跨径等参数对车-桥耦合系统非线性振动性能的影响。The nonlinear dynamic behaviors of vehicle-bridge coupled interaction system were investigated. Based on the Hamilton principle and the hypothesis of Euler-Bernoulli beam, the systematic nonlinear vibration equations of vehicle-bridge coupled interaction were derived. The nonlinear dynamic equations were solved by using Galerkin and Runge-Kutta methods. The influences of vehicle mass, vehicle velocity, bridge damping, bridge span on vehicle-bridge coupled nonlinear vibration behaviors were discussed.

关 键 词：车桥耦合 移动荷载 非线性振动 RUNGE-KUTTA法 

分 类 号：U441[建筑科学—桥梁与隧道工程]