准高速列车──钢筋混凝土连续梁桥横向车振随机分析

Analysis of Lateral Random Vibration for Quasi-High-Speed Train──Reinforced Concrete Multi-Span Box Girder Bridge

本文将准高速列车──桥梁系统视为一个整体，根据随机振动能量理论１以列车构架人工蛇行波为激振源计算了列车分别以１６０ｋｍ／ｈ、２００ｋｍ／ｈ速度通过钢筋混凝土连续梁桥时具有９９％概率水平的车桥系统振动响应。

The quasi-high-speed train and reinforced concrete multi-span box girder bridge are considered as an integral vibration system in analysis. In accordance with random vibration energy theory1, and by taking artificial hunting curves of the train frame as excitation source, vibrating responses with 99% probability of the train and bridge system are calculated when a quasi-high-speed train runs through the reinforced concrete multi-span box girder bridge respectively at a speed of 160 km/h and 200 km/h.