桥梁结构强度与抗震设计的思考

我国位于环太平洋地震带和欧亚地震带之间,是一个地震活动频率高、强度大、震源浅、分布广震灾严重的国家;20世纪以来,我国发生6级以上的地震近800次,每次地震的发生都对区域经济、人民生命财产造成不同程度的损伤。桥梁结构是道路交通中重要的节点部分,在地震灾害发生时,桥梁结构安全性往往是保通、震灾抢险的重要环节,因此,对桥梁结构的抗震设计是很有必要的,也是必须要的设计点。

Thoughts on Structural Strength and Aseismic Design of Bridge

China lies between the Circum-Pacific seismic belt and the Eurasian seismic belt,and is a country with high frequency of seismic activity,high intensity,shallow seismic source,wide spreading and serious seismic hazard.Since the 20 th century,China has experienced nearly 800 earthquakes of magnitude 6 or above.Each earthquake has caused varying degrees of damage to the regional economy,people's lives and properties.The bridge structure is an important node part in the road traffic.The safety of bridge structure is often an important link in the traffic guarantee and earthquake rescue in the event of an earthquake.Therefore,it is necessary to carry out the aseismic design for bridge structure,and is also a necessary design point.