基于车轮与桥面耦合关系变换的车桥系统振动耦合求解  

Coupled Solution for Dynamic Response of Vehicle-bridge System Based on Couple Transformation Between Wheel and Bridge Deck

作　　者：周立[1] 葛耀君[2] 

机构地区：[1]中铁上海设计院集团有限公司,上海200070 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《中国公路学报》2009年第2期37-41,共5页China Journal of Highway and Transport

基　　金：国家自然科学基金重大研究计划项目(90715039);国家自然科学基金青年科学基金项目(50408035)

摘　　要：提出一种新的直接求解车-桥系统振动响应的方法,即把车-桥系统作为一个整体来考虑,通过变换车轮与桥面对应点间的耦合关系来实现车辆移动,从而使车-桥系统振动响应的求解更加简便和实用化;将该程序计算结果与理论分析结果、ADAMS软件计算结果及模型试验结果进行对比;应用该车-桥相互作用分析程序研究了在2种路面粗糙度条件下的车-桥系统竖向响应,并进行了对比分析。结果表明:提出的程序计算结果正确、可靠;车-桥系统的竖向加速度及车轮与桥面之间的相互作用力受路面粗糙度影响较大。A novel solution was presented to analyze the dynamic response of vehicle-bridge system. Bridge and vehicles were considered as a whole in the solution method and the moving of vehicle was realized through the couple transformation between vehicle wheel and the corresponding point of bridge deck, which made the solution of the dynamic response of vehicle- bridge system more simple and practical. Results from theoretical analysis, ADAMS software and model test were compared. Finally, using the program of vehicle-bridge analysis program, the vertical response of the vehicle-bridge system was analyzed under the excitations of two surface roughnesses. Results show that the proposed calculation result of program is correct and reliable. Interaction between vertical acceleration and wheel and bridge deck of vehicle-bridge system is greatly influenced by road roughness.

关 键 词：桥梁工程 车-桥系统 耦合求解 粗糙度 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]