列车引起地面振动的影响因素的敏感性分析

Sensibility Analysis on Factor of Train-Induced Vibration

通过列车轨道传播系统的数学模型,结合ISO 2631和中国规范《城市区域环境振动标准》,得到列车通过时地面任意一点振动的振级,并以减小地面振动为目标,利用正交法对列车通过引起地面振动的各种因素进行了敏感性分析。在此基础上对一个3水平7因素的算例进行了敏感性分析,通过18次试验,并对结果进行极差分析,得出的结论对实际工程具有一定的参考意义。

This paper outlines an orthogonality analysis method to study the sensibility on factor of the train-induced vibration.The orthogonality analysis method is an optimization mathematical method.And with it,the result can be quickly obtained because it can reduce the test number visibly particular in the case with multiple factors.A specific case is studied in this paper with orthogonality analysis method.With three levels and seven factors,the result obtained by eighteen tests.Then the factor sensitivity is evaluated by difference analysis and trend analysis,and the conclusion is proved to be a useful reference to the practice.