塔梁连接形式对大跨斜拉桥动力特性的影响

Research on effects of type of joints between towers and girders on dynamic characteristics of long span cable-stayed bridge

建立了大跨斜拉桥的三维有限元分析模型，可方便考虑斜拉索初张力等几何非线性影响，进行了自由振动分析讨论了不同塔梁连接形式对结构动力特性的影响，可为进一步开展结构抗震、抗风等研究打下基础。

three-dimension finite dement model of long span cable-stayed bridge is established, with consideration of the gecmetric nonlinearity such as the initial tension of cable. The free vibration analysis has been performed. The effects of types of joints between towers and girders on dynamic characteristics of the bridge are discussed. It may lay a foundation for further investigations on antiseismic and wind-resistant of the bridge.