某双悬臂渡槽风致破坏原因分析

介绍了某双悬臂渡槽的结构及风致破坏情况,论述了渡槽静力风荷载与等效脉动风荷载的计算方法,指出渡槽等效风荷载的计算方法有别于桥梁和建筑结构,有其自身的特点.根据作用在某渡槽结构上的风荷载响应,分析了该渡槽风致破坏的原因：低估了结构静风荷载,忽略了结构脉动风荷载的影响;结构自身的抗风构造缺陷.

Wind Damage Mechanism Analysis of a Double-Cantilever Aqueduct Bridge

The paper presents a wind damage case study of a double-cantilever aqueduct bridge.The equivalent along-wind loads on the aqueduct structure is discussed for this special bridge.The computational method of the equivalent wind load for the aqueduct bridge is different from that of the ordinary bridges and house buildings.A detailed analysis is made of the causes of the wind damage.Results show that the static wind load on the aqueduct structures is lowly estimated without taking the fluctuating wind load into consideration into the structural design,and the structure is pooly designed.