电缆桥架结构的动态特性与地震反应谱分析

Research on the dynamic characteristics and the reaction spectrum analysis of electric cable bridge

对某核电站工程中的单托臂电缆敷设通道及桥架结构,运用ANSYS软件建立了三维有限元模型,对其进行模态参数分析并在地震荷载作用下进行了加速度反应谱分析,研究结果表明,该电缆桥架结构在地震荷载下强度是安全的,该方法和结论还可推广到其他类型桥架的动态特性分析。

In this paper, the seismic behavior of the electric cable bridge in certain nuclear power station engineering was analyzed by the commercial finite element software, ANSYS. The analysis includes the dynamic characteristics and the reaction spectrum analysis of the structure under seismic loads. The results indicate that the structure of electric cable bridge is secure under the seismic loads. This mthod and results can also be extended to other structure of electric cable bridges.