TBS无砟轨道上部结构层优化设计与参数分析

Parameters analysis and optimum design of TBS’upper structure layer

运用多重叠合梁模型对TBS无砟轨道上部结构层进行优化设计和参数分析,并编制相应的MATLAB计算程序。计算结果表明:增大道床板宽度、支承层厚度以及防冻层弹性模量将有利于降低上部结构层拉应力水平,而增大道床板厚度和弹性模量则不利于结构受力。

A composite beam method was applied for The parameters analysis and optimum design of TBS＇ upper structure layer, and the results were obtained by MATLAB programs. Calculation showed that with the width of track bed, the thickness of supporting-layer and the Elasticity modulus of the anti-freezing layer increased, the stress of upper structure layer decreased; While the increase of the thickness and the Elasticity modulus of track bed was handful to the structure.