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In-Plane Shear-Wall Configuration Effects on the Seismic Performance of Symmetrical Multistory Reinforced-Concrete Buildings
International Journal of Civil Engineering ( IF 1.7 ) Pub Date : 2021-05-11 , DOI: 10.1007/s40999-021-00634-8
Sayed Mahmoud

Shear walls, which are vertical elements with significantly high stiffness values, are becoming more and more popular and are widely used as primary lateral-load-resisting systems for reinforced-concrete (RC) buildings of various heights to ensure satisfactory performance. This study is thus devoted to assessing the performance of RC buildings with shear walls of different locations and configurations under the effect of seven different earthquake motions representing near‐source records. The buildings were designed to fit regions of medium seismicity following the ASCE 7–10 design requirements. Finite-element models were developed with shear walls, distributed over either the outer panel, the intermediate panel, or the center of the building. The seismic assessment of the developed building models was performed using dynamic nonlinear time–history analysis employing the selected full set of records. The results from the analysis clarified that the configuration and location of shear walls tend to significantly affect the induced story seismic responses. More specifically, building models with central core system, Configuration 7, provide the highest seismic responses among all other building models with about 50% which may lead to cost-effective earthquake-resistant design. From base shear design point of view, the use of shear walls distributed as parallel pairs along either the peripheral or the intermediate panel, Configurations 3 and 6, are the advantageous where they substantially reduce base shear by at least 33.20% among all other configurations.



中文翻译:

平面剪力墙构型对对称多层钢筋混凝土建筑物抗震性能的影响

剪力墙是具有很高刚度值的垂直单元,正变得越来越流行,并广泛用作各种高度的钢筋混凝土(RC)建筑的主要侧向抗力系统,以确保令人满意的性能。因此,本研究致力于评估在代表近源记录的七种不同地震运动的作用下,具有不同位置和构造的剪力墙的RC建筑物的性能。建筑物的设计符合ASCE 7-10设计要求的中等地震活动性区域。用剪力墙开发了有限元模型,这些剪力墙分布在外部面板,中间面板或建筑物的中心。使用选定的完整记录,使用动态非线性时程分析对开发的建筑模型进行地震评估。分析结果表明,剪力墙的配置和位置往往会显着影响诱导的层地震响应。更具体地说,具有中央核心系统配置7的建筑模型在所有其他建筑模型中提供最高的地震响应,约为50%,这可能会导致具有成本效益的抗震设计。从基础剪力设计的角度来看,使用沿构造3和6沿外围或中间面板成对平行分布的剪力墙是有利的,因为在所有其他构造中,它们可将基础剪力基本降低至少33.20%。

更新日期:2021-05-11
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