大沽河航道桥抗风性能试验研究

采用双梁法力学计算模型对大沽河航道桥的成桥状态及施工状态进行了动力特性分析，依托全桥气弹模型风洞试验，对此独塔自锚式分离双箱梁悬索桥进行了成桥状态和施工状态的颤振及抖振试验，可测定颤振临界风速及抖振响应，据此分析评估该桥的抗风性能。结果表明，该桥县有较好的抗风稳定性，并对同类型桥梁的设计有一定指导作用。

Experimental Inverstigation on Wind-resistent Behavior of Dagu-river Channel Bridge

The dynamical analysis of Dagu-river Channel Bridge during construction and service were conducted by adopting a double-beam mechanical model. Flutter and buffeting vibration of the single-tower self-anchored suspension bridge with separated double-box girder were studied by conducting overall bridge aeroelastic model wind tunnel test. The critical flutter wind speed and buffeting response were measured, and wind-resistant property of the bridge was assessed based on the experimental results. The results showed that the bridge has good aerodynamic stability which might be a reference for design of the same bridge type.