Nonlinear Time History Analysis for Seismic Effects on Reinforced Concrete Building

Q4 Engineering
A. Hasan, K. Iqbal, S. Ahammed, A. Ghosh
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引用次数: 0

Abstract

A typical Reinforced Concrete (RC) building frame comprising of RC columns and connecting beams that participates in resisting the earthquake forces. Due to earthquake, reversal tension generates at both faces of a beam and column; and hence damage occur in the frame for the disability of tension carrying capacity of concrete. Therefore, the structural performance of RC building for seismic load has been analyzed by nonlinear time history analysis method for this study. A residential building located in Dhaka, Bangladesh subjected to various types of gravity load and seismic load was considered to analyze using ETABS software as per the guideline of BNBC (2020). According to the guideline of ATC 40 (1996), the seismic performances like maximum displacement and story drift for RC building were evaluated both at structural and element levels by applying El Centro (1940) ground motion at the base of the structure. Formation of plastic hinges is used as the basis to evaluate the local performance and story drift is used to evaluate the global performance. At first, the considered building was designed only for gravity load, and then for both gravity and seismic load according to BNBC (2020). Further studies have been performed on that building considering double height column at a story level. It was observed that the maximum displacement and story drift exceeds the allowable limit for all the considered cases if seismic load is applied on the structure.
钢筋混凝土建筑地震作用的非线性时程分析
典型的钢筋混凝土(RC)建筑框架由钢筋混凝土柱和连接梁组成,参与抵抗地震力。由于地震作用,梁、柱两侧均产生反向张力;由于混凝土抗拉承载力的丧失,导致了框架的破坏。因此,本研究采用非线性时程分析方法对钢筋混凝土建筑在地震荷载下的结构性能进行了分析。根据BNBC(2020)的指导原则,考虑使用ETABS软件对位于孟加拉国达卡的一栋住宅建筑进行各种重力载荷和地震载荷的分析。根据ATC 40(1996)的指导方针,通过应用El Centro(1940)在结构底部的地面运动,在结构和单元水平上对RC建筑的最大位移和层间位移等抗震性能进行了评估。采用塑性铰的形成作为评价局部性能的依据,采用层间漂移作为评价整体性能的依据。首先,所考虑的建筑只设计了重力荷载,然后根据BNBC(2020)设计了重力和地震荷载。对该建筑进行了进一步的研究,考虑在一层的双层高柱。结果表明,在地震荷载作用下,结构的最大位移和层间位移均超过允许极限。
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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来源期刊
Nigerian Journal of Technological Development
Nigerian Journal of Technological Development Engineering-Engineering (miscellaneous)
CiteScore
1.00
自引率
0.00%
发文量
40
审稿时长
24 weeks
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