摘要
在我国一滨海城市,为敷设出海油管线,建造了一座9跨近海桥。桥的邻跨梁相互铰连并自由置放在桥墩的顶面上。水平地震作用的最敏感方向垂直桥的轴线。结构体系被模拟成一个具有许多刚体振型的链式计算模型。使用振型分析方法,计算了每一桥墩上梁的位移,并给出了桥梁滑离桥墩的概率。此外,还获得了与结构动力学有关的一些有趣的结论。
A 9-span offshore bridge ,to which the oil pipeline is attached,is erected in a coastal city of China. The single span girders are linked with one another and freely supported on top of rigid piers. The direction which is the most susceptible to horizontal earthquake action is perpendicular to the bridge axis. The structural system can be modeled as a chain-typed computation model with many rigid body modes. A deformation diagram is calculated from the modal analysis technique. The probability of divorce of bridge girders from their bridge piers are presented. Also,some interested conclusions related to structural dynamics are obtained.
出处
《地震工程与工程振动》
CSCD
北大核心
1993年第3期43-53,共11页
Earthquake Engineering and Engineering Dynamics
