地震作用下结构振动的时程分析

Time-history Analysis of Structural Vibration under Earthquake

高层钢筋混凝土结构是现代建筑的主要结构型式,研究其振动特性可优化抗震设计。利用有限元软件,建立了10层钢筋混凝土框架结构模型;采用汶川地震波记录荷载,应用动力时程分析方法,对模型的前12阶振型、节点的反应谱曲线、位移和加速度关于时间的函数曲线进行分析,验证了方法的可靠性,探究了结构的振动形式,为同类结构的抗震分析研究提供了一定的参考。

High rise reinforced concrete structure is the main structure style of modem building. Ten - storied reinforced concrete frgime structure model was built by using finite element method. The first twelve modes,re-sponse spectrum curve, displacement and acceleration time curve were analyzed by using dynamic time - his-tory method. The reliability of the method was verified and the vibration problem of the structure was ex- plored, which is helpful for seismic analysis of similar structures.