列车通过小半径反向曲线桥梁的动力相互作用分析  

ANALYSIS OF DYNAMICS INTERACTION ABOUT TRAIN CURVING BRIDGE ON SMALL RADIUS AND REVERSE CURVE

作　　者：宋郁民[1] 吴定俊[1] 侯永姣[1] 

机构地区：[1]同济大学桥梁工程系,上海200092

出　　处：《工程力学》2012年第A01期185-189,共5页Engineering Mechanics

摘　　要：以新建的某铁路货运专线上的反向曲线上的小半径曲线桥梁为例,考虑列车曲线通过的特点及轮轨非线性相互作用,建立空间的列车和曲线桥梁的振动方程,运用模态叠加法求解振动方程。通过车桥耦合振动专用分析程序VBC2.0的数值分析,得出列车通过该反向曲线上小半径曲线梁桥的一些振动规律,并给出我国货运列车通过该桥梁的合理行车速度及其他建议。In this paper, a certain new railway curved-bridge on a small radius curve and a reverse curve was taken for the case, and the motion equation of vehicle curving and three-dimensional space bridges were established on considering the characteristics of vehicle curving and nonlinear creep theory of a wheel-rail interaction. The motion equations were solved by a modal superposition method. The numerical analysis of the new curved bridge dynamic responses was solved by a professional program called VBC2.0, and some laws of vehicle-curved bridge coupling vibrations were summarized, and reasonable speed and other suggestions for vehicle curving this special bridge were proposed.

关 键 词：桥梁工程 车桥振动 动力相互作用 曲线桥梁 反向曲线 小半径曲线 振动规律 

分 类 号：U441.2[建筑科学—桥梁与隧道工程] U441.3[交通运输工程—道路与铁道工程]