CRTS Ⅲ型板式无砟轨道结构的多尺度有限元模型

Multi-scale finite element model for CRTS Ⅲ type slab ballastless track structures

为了对我国自行研发的CRTSⅢ型板式无砟轨道结构的力学特性进行进一步深化研究,基于多尺度有限元模型的基本思想,对板式无砟轨道结构的传统有限元进行了改进和深化,在通用有限元程序ABAQUS中建立了板式无砟轨道结构的多尺度有限元模型。通过建立不同的有限元模型进行对比分析计算,证明了多尺度有限元模型在保证计算结果精度的同时,能够有效提高建模速度和求解效率。该模型适用于对CRTSⅢ型板式无砟轨道结构的力学性能开展大量参数分析,进而优化其关键参数和构造。

In order to make further study on the mechanical property of CRTSIII type slab ballastless track struc-tures,which was self-designed in China,based on the method of the multi -scale finite element model,the traditional finite element model of slab ballastless track structures was improved.The multi-scale finite element model of CRTSIII type slab ballastless track structures was established in the general finite element program ABAQUS.Then the comparative calculation was made between various finite element models,showing that the high solution precision,fast modeling speed and high solution efficiency could be obtained.Therefore,the multi-scale finite element model is suitable for the parametric study on mechanical behavior of CRTSIII type slab bal-lastless track structures,and then the key influence factor and constructions could be optimized.