Effects of fundamental factors on coupled vibration of wind-rail vehicle-bridge system for long-span cable-stayed bridge

作     者：张明金 李永乐 汪斌 ZHANG Ming-jin;LI Yong-le;WANG Bin

作者机构：Department of Bridge EngineeringSouthwest Jiaotong University 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2016年第23卷第5期

页      面：1264-1272页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Projects (U1334201,51525804) supported by the National Natural Science Foundation of China Project (15CXTD0005) supported by the Sichuan Province Youth Science and Technology Innovation Team,China 

主　　题：wind-vehicle-bridge system coupled vibration long-span cable-stayed bridge fundamental factors 

摘      要：In a wind-vehicle-bridge(WVB) system,there are various interactions among wind,vehicle and *** mechanism for coupling vibration of wind-vehicle-bridge systems is explored to demonstrate the effects of fundamental factors,such as mean wind,fluctuating wind,buffeting,rail irregularities,light rail vehicle vibration and bridge stiffness.A long cable-stayed bridge which carries light rail traffic is regarded as a numerical ***,a finite element model is built for the long cable-stayed *** deck can generally be idealized as three-dimensional spine beam while cables are modeled as truss *** are modeled as mass-spring-damper *** irregularities and wind fluctuation are simulated in time domain by spectrum representation ***,aerodynamic loads on vehicle and bridge deck are measured by section model wind tunnel *** vertical and torsional flutter derivatives of bridge deck are identified by weighting ensemble least-square ***,dynamic responses of the WVB system are analyzed in a series of *** results show that the accelerations of the vehicle are excited by the fluctuating wind and the track irregularity to a great *** transverse forces of wheel axles mainly depend on the track *** displacements of the bridge are predominantly determined by the mean wind and restricted by its *** the accelerations of the bridge are enlarged after adding the fluctuating wind.