三塔悬索桥风-车-桥耦合动力分析  

The wind-vehicle-bridge coupling dynamic analysis of three tower suspension bridge

作　　者：王柳[1] 郭向荣[1] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2012年第1期24-29,共6页Journal of Railway Science and Engineering

摘　　要：以温州市某大桥为例,分别考虑风荷载的平均成分和脉动成分对车桥系统的影响,建立了风荷载作用下三塔悬索桥的车桥耦合动力分析模型,并根据势能驻值原理及形成结构矩阵的"对号入座法则",导出了车桥系统的空间振动方程,采用计算机模拟的方法,计算与分析了该桥列车通过时的桥梁动力响应和列车走行性。研究结果为三塔悬索桥的动力设计提供了理论依据。Taking Wenzhou Oujiang bridge as an example,a vehicle-bridge dynamic analysis model under wind load was estabilished considering both the influence of the average wind load and fluctuating wind load.Based on the principle of total potential energy with stationary value in elastic system and the ＂set in right position＂ rule for formulation of system matrixes,the bridge system spatial vibration equation was derived.By using computer simulation method,the bridge dynamic response and train running performance were calculated and analyzed in detail when trains run through the bridge,and the results provided a theoretical basis for dynamic design on three tower susention bridge.

关 键 词：三塔悬索桥 风荷载 车桥动力分析 

分 类 号：U441.7[建筑科学—桥梁与隧道工程]