- Title
- Seismic response of non-structural components attached to reinforced concrete structures with different eccentricity ratios
- Creator
- Aldeka, Ayad; Dirar, Samir; Chan, Andrew; Martinez-Vazquez, Pedro
- Date
- 2015
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/94778
- Identifier
- vital:10035
- Identifier
-
https://doi.org/10.12989/eas.2015.8.5.1069
- Identifier
- ISSN: 2092-7614
- Abstract
- This paper presents average numerical results of 2128 nonlinear dynamic finite element (FE) analyses of lightweight acceleration-sensitive non-structural components (NSCs) attached to the floors of one-bay three-storey reinforced concrete (RC) primary structures (P-structures) with different eccentricity ratios. The investigated parameters include the NSC to P-structure vibration period ratio, peak ground acceleration, P-structure eccentricity ratio, and NSC damping ratio. Appropriate constitutive relationships were used to model 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 vibration periods of the P-structures. Full dynamic interaction was considered between the NSCs and P-structures. A set of seven natural bi-directional ground motions were used to evaluate the seismic response of the NSCs. The numerical results show that the acceleration response of the NSCs depends on the investigated parameters. The accelerations of the NSCs attached to the flexible sides of the P-structures increased with the increase in peak ground acceleration and P-structure eccentricity ratio but decreased with the increase in NSC damping ratio. Comparison between the FE results and Eurocode 8 (EC8) predictions suggests that, under tuned conditions, EC8 provisions underestimate the seismic response of the NSCs mounted on the flexible sides of the plan-irregular RC P-structures. © 2015 Techno-Press, Ltd.
- Publisher
- Techno Press
- Relation
- Earthquake and Structures Vol. 8, no. 5 (2015), p. 1069-1089
- Rights
- © 2015 Techno-Press, Ltd.
- Rights
- This metadata is freely available under a CCO license
- Subject
- Dynamic analysis; Eccentricity ratio; Eurocode 8; Finite element; Irregular RC buildings; Non-structural components; Torsion; Acceleration; Concrete buildings; Concretes; Damping; Reinforced concrete; Seismic response; Seismology; Structural analysis; Peak ground acceleration; RC buildings; Finite element method; 0905 Civil Engineering
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