本文以列车-曲线桥系统为研究对象,建立车-桥系统的空间振动分析模型。以一箱型简支梁为例,用计算机模拟列车过桥的全过程,计算了列车荷载作用下曲线桥的动力响应、列车的脱轨系数、轮重减载率、横向力和列车运行平稳性指标,分析了列车以较高速度通过曲线桥时,车-曲线桥系统的动力响应,并与直线桥作了比较。计算结果表明本文方法是有效的。

In this paper, the v ehicle-curv ed bridg e systen i s studied. The spaced analy tica l model of a t rain passing on a curved bridg e wi th a span o f 32m, as ex ample, i s simulated by computer. The dynamic response o f the bridge derai lment quo tient , the reduction rate of the w heel load a nd the t rain stabi li ty a re calcula ted. The results are compared wi th the st raig ht bridg e. All o f the resul ts show tha t the proposed method i s ef fective in use.