Pushover Analysis of Multi-Story Reinforced Concrete Frame Structure

Ahmed Hassan, Ahmed Adan Yasin
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Abstract

Pushover analysis is a non-linear static procedure (NSP) used to examine the structural response of a building during the inelastic limit before it reaches the edge of partial or total collapse. In this study a model of multi-story reinforced concrete building along with applied loads is analyzed in powerful non-linear static procedure using computer software ETABS. A limited number of horizontal forces are then applied to imitate the impact of ground movement. The building is supposed as a 6-story building, no shear walls used in the model as the level of earthquake hazard assumed very low. Moreover, deformations are determined. The forces would then be increased gradually, NSPs convert multi-degree of freedom models to single-degree of freedom models utilizing a pushover analysis to determine capacity curve or pushover curve which is horizontal roof displacement vs base shear, This curve plot reveals the highest base motion that the structure can withstand, and then estimate the maximum global displacement by combining a ground response spectrum with the capacity curve.
多层钢筋混凝土框架结构的推覆分析
推覆分析是一种非线性静力程序(NSP),用于检查建筑物在达到部分或全部倒塌边缘之前的非弹性极限期间的结构响应。本文利用计算机软件ETABS对多层钢筋混凝土建筑模型进行了强大的非线性静力分析。然后施加有限数量的水平力来模拟地面运动的影响。该建筑假定为6层建筑,由于假定地震危险性等级很低,模型中不使用剪力墙。此外,还确定了变形。然后力将逐渐增加,NSPs利用推覆分析将多自由度模型转换为单自由度模型,以确定能力曲线或推覆曲线,即水平屋顶位移与基础剪切,该曲线图显示了结构可以承受的最高基础运动,然后通过将地面反应谱与能力曲线相结合来估计最大整体位移。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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