摘要
大跨度斜拉桥桥塔属于高耸结构,在施工阶段桥塔处于不稳定状态,需对其进行动力特性分析。以鄂东公路大桥主桥桥塔为例,对桥塔和塔吊结构体系的动力特性进行了有限元理论分析。给出桥塔3个主要施工阶段动力特性分析结果,为桥塔的抗风、抗震分析奠定了基础。
As high-rise structure ,the long span cable stayed bridge tower is at the non-steady state during construction stage. So the dynamic characteristic on it must be analyzed. This paper carries out the finite element theoretical analysis of the dynamic characteristic on the bridge tower and the tower crane structure system on the basis of main span bridge tower of the e＇dong highway bridge. The dynamic analysis results of bridge tower during three main construction stages are given at last, which have laid the foundation for againsting the wind and the earthquake resistance analysis of the bridge tower.
出处
《筑路机械与施工机械化》
北大核心
2007年第6期38-40,共3页
Road Machinery & Construction Mechanization
关键词
桥塔
塔吊
动力特性
有限元法
bridge tower
tower crane
dynamic characteristic
FEM
