独塔斜拉桥静风稳定性分析

Aerostatic Stability Analysis of Single Pylon Cable-Stayed Bridge

以某独塔钢箱梁斜拉桥为背景,进行抗风性能分析。采用计算流体动力学(CFD)数值模拟技术计算得到主梁断面的静力三分力系数,分析静风扭转发散机理。对桥梁结构进行自振特性分析,为进一步研究风致振动提供依据。最后,进行了风载响应计算,评估该桥的抗风性能。

This paper analyzes the wind-resistant behavior of a single pylon cable-stayed bridge with the steel box girder. Firstly,the static force coefficients of the main beam section are obtained by means of the CFD numerical simulation and the wind-induced lateral-torsional buckling mechanism is analyzed. Then,dynamic characteristics of the bridge are analyzed to make a further research on the wind-induced vibration. Finally,the aerostatic response is calculated to evaluate the wind-resistant behavior of the bridge.