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Response of non-structural components mounted on irregular RC buildings: comparison between FE and EC8 predictions

Citation

Aldeka, AB and Chan, AHC and Dirar, S, Response of non-structural components mounted on irregular RC buildings: comparison between FE and EC8 predictions, Earthquakes and Structures, 6, (4) pp. 351-373. ISSN 2092-7614 (2014) [Refereed Article]

Copyright Statement

Copyright 2014 Techno-Press, Ltd.

DOI: doi:10.12989/eas.2014.6.4.351

Abstract

This paper investigates the seismic response of lightweight acceleration-sensitive non-structural components (NSCs) mounted on irregular reinforced concrete (RC) primary structures (P-structures) using non-linear dynamic finite element (FE) analysis. The aim of this paper is to study the influence of NSC to P-structure vibration period ratio, peak ground acceleration, NSC to P-structure height ratio, and P-structure torsional behaviour on the seismic response of the NSCs. Representative constitutive models were used to simulate the behaviour of the RC P-structures. The NSCs were modelled as vertical cantilevers fixed at their bases with masses on the free ends and varying lengths so as to match the frequencies of the P-structures. Full dynamic interaction is considered between the NSCs and P-structures. A set of 21 natural and artificial earthquake records were used to evaluate the seismic response of the NSCs. The numerical results indicate that the behaviour of the NSCs is significantly influenced by the investigated parameters. Comparison between the FE results and Eurocode (EC8) predictions suggests that EC8 underestimates the response of NSCs mounted on the flexible sides of irregular RC P-structures when the fundamental periods and heights of the NSCs match those of the P-structures. The perceived cause of this discrepancy is that EC8 does not take into account the amplification in the dynamic response of NSCs induced by the torsional behaviour of RC P-structures.

Item Details

Item Type:Refereed Article
Keywords:dynamic analysis, Eurocode 8, finite element, irregular RC buildings, non-structural components, torsion
Research Division:Engineering
Research Group:Civil Engineering
Research Field:Infrastructure Engineering and Asset Management
Objective Division:Construction
Objective Group:Construction Design
Objective Field:Civil Construction Design
Author:Chan, AHC (Professor Andrew Chan)
ID Code:100998
Year Published:2014
Web of Science® Times Cited:2
Deposited By:Office of the School of Engineering
Deposited On:2015-06-05
Last Modified:2015-09-18
Downloads:0

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