摘要
为了清楚地了解混凝土折线塔斜拉桥的动力特性和地震响应,对一座混凝土折线塔斜拉桥的抗震性能进行研究。采用数值计算方法利用有限元软件MIDAS对直塔和折线塔斜拉桥的动力特性和地震响应进行计算。得出了两种塔型斜拉桥在不同结构体系情况下的动力特性和地震作用下的位移和内力。最后得出在地震荷载作用下两种结构体系的斜拉桥内力和位移均相差不大,并为设计和实际工程提供参考。
In order to clearly understand the dynamic characteristic and earthquake response of the concrete dogleg pylon cable-stayed bridge,the article studies the earthquake resistant performance of a concrete dogleg cable-stayed bridge.The numerical value calculation is used to calculate the dynamic characteristic and the earthquake response of the straight pylon and dogleg pylon cable-stayed bridges by the finite element software MIDAS.The article gives the dynamic characteristic of two pylon-shaped cable-stayed bridges under the different structural systems and the displacement and inner force under the earthquake action.Finally,the inner forces and displacements of two structural system cable-stayed bridges are not more different under the earthquake loading action,which can provide the reference for the design and practical engineering.
出处
《城市道桥与防洪》
2010年第9期30-34,共5页
Urban Roads Bridges & Flood Control
关键词
斜拉桥
折线塔
动力特性
地震响应
cable-stayed bridge
dogleg pylon
dynamic characteristic
earthquake response
