确定楼面反应谱的简化方法

Simplified Method for the Determination of Floor Response Spectra

楼面反应谱一般是指楼层质点加速度反应谱,它是对设置在楼面上的设备和管道进行抗震分析的地震输入。为了解决计算楼面反应谱的实用问题,本文提出一种由地面反应谱直接估计楼面反应谱的方法。该方法以建筑结构抗震验算的基底剪力法及相应的放大曲线为基础,具有简单实用的特点。文中最后给出与时程分析途径估计楼面反应谱方法比较的算例,结果表明,对于基底剪力法适用范围内的结构,由简化方法确定的楼面反应谱是可以满足工程要求的。

the floor rcspose spectra often refers to an acceleration response spectra of floor mass point, which is an earthquake input of performing seismic analysis for floor-supported equipments and piping. For the sake of the practical application of the calculation of floor response spectra, a method of estimating floor response spectra directly from ground response spectra is preposed herein. This method is based on the base shear method for the seismic checking of building structures and its corresponding amplitude curve, therefore, it has charactoristics of simplification and practice therein. In this paper, comparable calculating examples by both the simplified method and the time-history analysis are also given. These results express that the floor reponse spectra to be determined by simplified method could meet the engineering requirements for those structures applicable to the base shear method.