板式轨道结构分析计算的两种方法

板式无碴轨道是一种新型的轨道结构型式,越来越多地应用于高速铁路和客运专线.但是,我国无碴轨道结构计算理论还不完善,不能满足当前高速铁路和客运专线无碴轨道应用的需求.分别采用叠合梁法和有限元法,对板式轨道在荷载作用下的竖向位移和内力进行了分析,并通过MATLAB编程实现,计算结果符合无碴轨道结构的基本原理.通过对比分析,发现两种方法所得计算结果相差不大,均可满足工程要求.

Two Analytical Methods of Slab Track Structures

The slab ballastless track is a new kind of track structure, widely applied in high-speed railway and the special line for passenger transport. However, the calculational theory of ballastless track structure is not fully built presently, and can't meet the needs of ballastless track applicat ion in high-speed railway and the special line for passenger transport. The ver tica l displacement and internal force of slab track structures under the loads are calculated by composite beam method and finite element method respectively in this paper, and the results are obtained by MATLAB programs, which measured up to the basic principle of ballastless track structure. According to a contrast and analysis, the authors find that the results obtained through two methods have few discrepancies, and each of them can satisfy the demands of engineering.