曲线箱梁桥列车-桥梁时变系统空间振动随机分析

在列车-桥梁时变系统横向振动能量随机分析理论的基础上，采用26个自由度的列车空间振动模型，以空间曲梁单元模拟桥梁结构，建立了曲线箱梁桥列车-桥梁时变系统空间振动分析模型，分别以构架人工蛇行波及前苏联规律性的竖向不平顺函数为横向及竖向激振源，计算了列车以不同车速通过洛湛铁路曲线箱梁桥的空间振动响应，所得结果可供设计参考。

Stochastic Space Vibration Analysis of Train-Curved Bridge Time-Varying System

Based on the stochastic analysis theory of lateral vibration energy for train-bridge time-varying system, in this paper, a finite element model for space vibration of the train and the curved box beam bridge is presented for the first time, where the vehicle is considered as a twenty-six-freedomed multi-body system and the bridge is discretized as curved beam finite elements. With the artificial bogie crawl wave as lateral vibration source and the irregularity function presented by former Soviet Union researchers as vertical vibration source, the space vibration respones are calculated when the train runs through the curved box beam bridge on Luoyang-Zhanjiang Railway at differents speeds. The results provide a reference for design.