摘要
本文基于格林函数法 ,对移动荷载作用下的轨道系统的振动进行了研究 ,与文克尔梁模型进行了对比 ,这一方法可推广到高架桥的计算中 ,所得到的结论具有应用价值。
In this paper, we consider the contribution of wheel-axle pressure mechanism only, assuming that rails and wheels are ideally smooth and no carriage or wheel-axle vibrations are excited.According to this assumption a time domain integral representation is derived using the classic beam dynamics. In the integral representation, loads caused by wheels are modeled by moving loads. The moving loads and reaction caused by rail are discrete by stepwise constant functions in time domain. The calculation of load effects is simple, but the calculation of the effect of reacting force is complicated. The calculation of the vibration caused by reacting force is discussed in detail.
出处
《地震工程与工程振动》
CSCD
北大核心
2002年第2期85-90,共6页
Earthquake Engineering and Engineering Dynamics
基金
武汉市建设科技项目 ( 2 0 0 1 17)
