高速列车—无砟轨道—桥梁耦合系统振动特性分析

根据高速列车—无砟轨道—桥梁系统运动的特点,建立了适合该问题动力学分析的新型车辆单元和轨道—桥梁单元,运用有限元方法和Lagrange方程,推导了两种单元的刚度矩阵、质量矩阵和阻尼矩阵。整个列车—轨道—桥梁系统被离散为车辆单元和轨道—桥梁单元,其中一节车辆离散成一个车辆单元,轨道—桥梁系统离散成四层梁单元。最后通过一个实例计算对整个系统进行垂向振动特性分析。

Characteristic Analysis of Vibration for Coupling System of High-Speed Train-Ballastless Track-Bridge System

The construction process of standard layer in high-rise building has a characteristic of circular construction. There is limitation to prepare plans using traditional methods. The paper applies ABC simulating system in simulation of constructing high-rise buildings, and integrates advantages of CPM network technology into simulating of modeling stage to make model more practical in the constructing process. Through simulation analysis, the construction period and re- source utilization are obtained. Through sensitivity analysis, the optimized mechanical configuration parameters are gained. Construction examples show that it is effective to adapt this modeling method to simulate construction process.