The influence of different factors on buildings’ height in the absence of shear walls in low seismic regions

Keihani, Reza ORCID: https://orcid.org/0000-0002-3679-8312, Bahadori-Jahromi, Ali ORCID: https://orcid.org/0000-0003-0405-7146, Goodchild, Charles and Cashell, Katherine A. (2020) The influence of different factors on buildings’ height in the absence of shear walls in low seismic regions. Structural Engineering and Mechanics, An International Journal. ISSN 1225-4568 (In Press)

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Abstract

Shear walls are structural members in buildings that are used extensively in reinforced concrete frame buildings, and almost exclusively in the UK, regardless of whether or not they are actually required. In recent years, the UK construction industry, led by the Concrete Centre, has questioned the need for such structural elements in low to mid-rise reinforced concrete frame buildings. In this context, a typical modern, 5-storey residential building is studied, and its existing shear walls are replaced with columns as used elsewhere in the building. The aim is to investigate the impact of several design variables, including concrete grade, column size, column shape and slab thickness, on the building’s structural performance, considering two punching shear limits (VEd/VRd,c), lateral drift and accelerations, to evaluate its maximum possible height under wind actions without the inclusion of shear walls. To facilitate this study, a numerical model has been developed using the ETABS software. The results demonstrate that the building examined does not require shear walls in the design and has no lateral displacement or acceleration issues. In fact, with further analysis, it is shown that a similar building could be constructed up to 13 and 16 storeys high for 2 and 2.5 punching shear ratios (VEd/VRd,c), respectively, with adequate serviceability and strength, without the need for shear walls, albeit with thicker columns.
Keywords: High-rise RC buildings; wind actions; Concrete grade; Concrete section size; Column shape; Slab thickness; Shear wall

Item Type: Article
Uncontrolled Keywords: High-rise RC buildings; wind actions; Concrete grade; Concrete section size; Column shape; Slab thickness; Shear wall
Subjects: Construction and engineering > Civil and environmental engineering
Construction and engineering > Civil and structural engineering
Construction and engineering
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Depositing User: Ali Bahadori-Jahromi
Date Deposited: 12 Jun 2020 16:40
Last Modified: 22 Jul 2020 08:44
URI: http://repository.uwl.ac.uk/id/eprint/7039

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