The behavior of rectangular and circular reinforced concrete columns under biaxial multiple excitation
The behavior of rectangular and circular reinforced concrete columns under biaxial multiple excitation
The aim of this study is to investigate the dynamic performance of rectangular and circular reinforced concrete (RC) columns considering biaxial multiple excitation. For this purpose, an advanced nonlinear finite element model which can simulate various features of cyclic degradation in material and structural components is used. The implemented nonlinear fiber beam-column model accounts for inelastic buckling and low-cycle fatigue degradation of longitudinal reinforcement and can simulate multiple failure modes of RC columns under dynamic loading. Hypothetical rectangular and circular columns are used to investigate the failure modes of RC columns. A detailed ground motion selection is implemented to generate real mainshock and aftershocks. It was found that multiple excitations due to aftershock has the potential of increasing the damage of the RC columns and longitudinal reinforcements are significantly affected low-cycle fatigue. Also, it was found that rectangular column is more sensitive to accumulative damage due to cyclic fatigue. This study increases the accuracy of structural analysis of RC columns and consequently improves understanding the failure modes of RC columns with different cross-sectional shapes.
RC column, biaxial loading, multiple excitation, low-cycle fatigue
677-691
Salami, Mohammad Reza
db0a471b-65d9-45d6-973b-ae10a3e4febd
Afsar Dizaj, Ebrahim
387bbd6f-a74a-47fe-9637-af62729ba50d
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
2019
Salami, Mohammad Reza
db0a471b-65d9-45d6-973b-ae10a3e4febd
Afsar Dizaj, Ebrahim
387bbd6f-a74a-47fe-9637-af62729ba50d
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Salami, Mohammad Reza, Afsar Dizaj, Ebrahim and Kashani, Mohammad
(2019)
The behavior of rectangular and circular reinforced concrete columns under biaxial multiple excitation.
Computer Modeling in Engineering & Sciences, 120 (3), .
(doi:10.32604/cmes.2019.05666).
Abstract
The aim of this study is to investigate the dynamic performance of rectangular and circular reinforced concrete (RC) columns considering biaxial multiple excitation. For this purpose, an advanced nonlinear finite element model which can simulate various features of cyclic degradation in material and structural components is used. The implemented nonlinear fiber beam-column model accounts for inelastic buckling and low-cycle fatigue degradation of longitudinal reinforcement and can simulate multiple failure modes of RC columns under dynamic loading. Hypothetical rectangular and circular columns are used to investigate the failure modes of RC columns. A detailed ground motion selection is implemented to generate real mainshock and aftershocks. It was found that multiple excitations due to aftershock has the potential of increasing the damage of the RC columns and longitudinal reinforcements are significantly affected low-cycle fatigue. Also, it was found that rectangular column is more sensitive to accumulative damage due to cyclic fatigue. This study increases the accuracy of structural analysis of RC columns and consequently improves understanding the failure modes of RC columns with different cross-sectional shapes.
Text
Salami et al. Accepted Manuscript
- Accepted Manuscript
More information
Accepted/In Press date: 9 July 2019
e-pub ahead of print date: 6 September 2019
Published date: 2019
Keywords:
RC column, biaxial loading, multiple excitation, low-cycle fatigue
Identifiers
Local EPrints ID: 433007
URI: http://eprints.soton.ac.uk/id/eprint/433007
ISSN: 1526-1492
PURE UUID: b84d9884-0d0a-406a-994f-2ed8b2b8eb5b
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Date deposited: 06 Aug 2019 16:30
Last modified: 16 Mar 2024 08:04
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Author:
Mohammad Reza Salami
Author:
Ebrahim Afsar Dizaj
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