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Effect of earthquake components on global and local response of RC moment resisting frames

Effect of earthquake components on global and local response of RC moment resisting frames Any recorded earthquake has its components in three mutually perpendicular direction viz. X, Y and Z. It is in common practice to take only the single component of earthquake while performing the non-linear time history analysis; completely disregarding the effect of multidirectional loading. Furthermore, the effect of vertical acceleration is often disregarded in the analysis or simply compensated by a code recommended V/H ratio without any valid and rational justification. A clear and concise study on the effect of multidirectional loading of concrete frames is hence deemed necessary. To this end, the coupled inelastic behavior of RC structure was studied under multiple earthquake excitation. Uni-directional, bi-directional and tri-directional analysis was done for the selected structures of 3, 6 and 9 Storey and the global and local response parameters were studied. In case of comparison, x-only loading case was fixed as the base case whereby, the responses were compared with it to study their variation. The results showed that multiple component of earthquakes had significant impact on the local parameters. On a global level, multiple component of earthquake had significant impact in increasing the base shear but had very little impact on the maximum story displacements. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Journal of Civil Engineering Springer Journals

Effect of earthquake components on global and local response of RC moment resisting frames

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References (31)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
1563-0854
eISSN
2522-011X
DOI
10.1007/s42107-023-00583-8
Publisher site
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Abstract

Any recorded earthquake has its components in three mutually perpendicular direction viz. X, Y and Z. It is in common practice to take only the single component of earthquake while performing the non-linear time history analysis; completely disregarding the effect of multidirectional loading. Furthermore, the effect of vertical acceleration is often disregarded in the analysis or simply compensated by a code recommended V/H ratio without any valid and rational justification. A clear and concise study on the effect of multidirectional loading of concrete frames is hence deemed necessary. To this end, the coupled inelastic behavior of RC structure was studied under multiple earthquake excitation. Uni-directional, bi-directional and tri-directional analysis was done for the selected structures of 3, 6 and 9 Storey and the global and local response parameters were studied. In case of comparison, x-only loading case was fixed as the base case whereby, the responses were compared with it to study their variation. The results showed that multiple component of earthquakes had significant impact on the local parameters. On a global level, multiple component of earthquake had significant impact in increasing the base shear but had very little impact on the maximum story displacements.

Journal

Asian Journal of Civil Engineering – Springer Journals

Published: Sep 1, 2023

Keywords: OpenSees; RC; Nonlinear time history; Earthquake components; Fiber section; Distributed plasticity

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