路基上双块式无砟轨道结构的参数影响分析

Influence of Double-block Ballastless Track Parameters on Soil Subgrade

针对路基上双块式无砟轨道的结构形式,建立钢轨-扣件-轨下垫板-双块式轨枕-道床板-混凝土底座-弹性基础的有限元分析模型,应用大型国际通用有限元分析软件ABAQUS,对比分析不同的扣件刚度、不同的支承层厚度以及支承层弹性模量的变化对于路基上双块式无砟轨道结构的影响,为我国无砟轨道的结构设计和工程实践提供依据。

According to the configuration of double-block ballastless track on soil subgrade, the finite element analysis model which is composed of tracks, fastens, pads, double-block sleepers, slabs, concrete base- ment and elastic foundation has been set up. By means of the international popular finite element software ABAQUS, the moving trends of the responses of the ballastless track accompanied with the changing of parameters such as fastening stiffness, thickness and elasticity modulus of supporting layers have been researched. The research results can provide reference for the structure design and engineering practice of the ballastless track in our country.