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Comparing calculation methods of storey stiffness to control provision of soft storey in seismic codes
, Article Earthquake and Structures ; Volume 11, Issue 1 , 2016 , Pages 1-23 ; 20927614 (ISSN) ; Noorifard, A ; Sharif University of Technology
Techno Press
2016
Abstract
Numerous buildings have been damaged or destroyed in previous earthquakes by developing soft storey. Almost all the seismic codes have provisions to prevent soft storey in structures, most of them have recommended the ratio of stiffness between adjacent storeys, but none of them has proposed the method to calculate the storey stiffness. On the other hand a great number of previous researches on stiffness have been focused on approximate methods and accurate methods by using analytical softwares have been almost neglected. In this study, six accurate methods for calculating the storey stiffness have been studied on 246 two-bay reinforced concrete frames. It is shown with the results of the...