区间轨道结构双层叠合交叉梁系力学模型研究

A Study on Mechanical Model of Two-level Crossing Superposed Beam System for Section Track Structure

基于系统的观点 ,建立一种较为复杂的区间轨道结构动力学模型———双层叠合交叉梁系空间力学模型 ,并推导各模型单元的特性矩阵 ,给出区间轨道结构的振动微分方程。该模型中同时考虑了轨道的垂向和横向 ,细化了枕轨联结点等 ,为区间轨道动力学仿真研究提供建模理论依据。

A comparatively complicated dynamic model of section track structure--the three dimensional mechanical model of two\|level crossing superposed beam system is established. Matrix of characteristics for each model unit is derived, and the differential equation of vibration for section track structure is given. The model provides theoretical basis for model establishment of simulation study on section track dynamics.