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Analytical seismic assessment of RC dual wall/frame systems using SLaMA: Proposal and validation

Gentile, R; Pampanin, S; Raffaele, D; Uva, G; (2019) Analytical seismic assessment of RC dual wall/frame systems using SLaMA: Proposal and validation. Engineering Structures , 188 pp. 493-505. 10.1016/j.engstruct.2019.03.029. Green open access

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Abstract

A paramount step in seismic assessment of existing structures is the determination of the structural capacity. It is widely recognised that non-linear numerical approaches are arguably the most reliable tool to achieve this goal. However, reliable yet simple analytical procedures are needed to identify potential structural weaknesses and their influence on the overall capacity, to cross-check and/or interpret numerical analyses. This paper presents a novel analytical -or “by-hand”- procedure to calculate the non-linear capacity curve of RC dual wall/frame systems within the framework of the Simple Lateral Mechanism Analysis (SLaMA). The mechanical interaction among frame(s) and wall(s) is explicitly considered to calculate their base shear and overturning moment contributions. The procedure is outlined and applied to 28 case studies with different geometry, wall(s) position, wall-to-frame strength ratio and plastic mechanism. The results are compared to refined numerical pushover analyses, showing a maximum 5% error both in terms of ultimate base shear and displacement for the majority of the case studies.

Type: Article
Title: Analytical seismic assessment of RC dual wall/frame systems using SLaMA: Proposal and validation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.engstruct.2019.03.029
Publisher version: https://doi.org/10.1016/j.engstruct.2019.03.029
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Technology, Engineering, Civil, Engineering, Seismic assessment, Displacement-Based Assessment (DBA), Simple Lateral Mechanism Analysis (SLaMA), Non-linear analysis, Reinforced Concrete (RC), Dual wall/frame systems, Hierarchy of strength, SHEAR-STRENGTH, MODEL, DESIGN
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Inst for Risk and Disaster Reduction
URI: https://discovery.ucl.ac.uk/id/eprint/10073836
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