轨道横向动力特性振型叠加法分析

本文对包括两根钢轨、轨枕、道床的点支承欧拉梁轨道横向振动力学模型，用振型叠 加法进行了分析，得到了20一500比频率范围内的位移响应.它与轨道实际情况有良 好的一致性。计算结果表明，本方法分析频率范围广，计算量小，是分析软道横向动力 特性的有效方法。 

An Analysis of Railway Track Lateral Vibration by Summation Method

The study applies the summation methed to analyse the mechanical modelof track lateral vibration characteristic of Euler beam with discretesupports. Included in the discussion are two pieces of rails, sleepers andballast. The analysis results in a displacement response the frequencyrange of which is from 20 to 500 Hz, which agrees well to the actualones. From the calculation it follows that the method covers a widerfrequency range, claims less work of calculation, and presents a moreeffective approach to the scientific analysis of railway track lateralvibration.