先简支后连续桥梁振动影响因素分析

分析桥梁和车辆两个动力系统的耦合振动规律，对公路上常见的4种标准跨径先简支后连续箱梁桥进行车桥耦合振动动力特性对比分析。通过详细对比分析桥面铺装、截面尺寸及行驶车速的变化等对该类桥型的车桥振动动力特性的影响进行分析，得到影响该类桥车桥耦合振动性能的关键因素，并提出设计建议。

Analysis of Vibration Characteristics of Simple-Continuous Bridge

To learn the vibration rule of two dynamic systems of vehicle-bridge, the paper computes the vehicle-bridge vibrations of the common simply supported continuous box beam bridges and analyses the dynamic capability resulted from bridge deck pavement and the change of cross-sections size and vehicle velocity. At last, this discussion finds out the main factors that affect the dynamic capability of bridge, and gives some advices about the design of this kind of bridges.