Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement

Corrosive environment adversely affects the durability of existing reinforced concrete (RC) structures as well as its performance under seismic loading. In this paper, the seismic behaviour of corroded reinforced concrete (RC) exterior joint was experimentally evaluated. Eight similar RC exterior jo...

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Main Authors: Zhang, Xinchen, Li, Bing
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/154768
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1547682022-01-07T05:46:51Z Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement Zhang, Xinchen Li, Bing School of Civil and Environmental Engineering Engineering::Civil engineering Beam-Column Joints Corrosion Corrosive environment adversely affects the durability of existing reinforced concrete (RC) structures as well as its performance under seismic loading. In this paper, the seismic behaviour of corroded reinforced concrete (RC) exterior joint was experimentally evaluated. Eight similar RC exterior joints with various corrosion level of reinforcements were tested under two levels of representative column axial force ratio. Lateral loading resisting, ductility, energy dissipation and stiffness of corroded specimens were examined and compared with uncorroded control specimens. Joint shear stress and the development length of beam longitudinal reinforcement were investigated and compared with available design code. In addition, the joint internal force flow of corroded joint was investigated analytically based on modified strut-and-tie model (STM). Experimental results indicate that corrosion of reinforcements have significant adverse effect on the strength and lateral drift capacity of the joints as well as other mechanical properties. Based on the STM model and parametric study, it is further found that the effect of corrosion level on joint stress level is more significant at higher axial force ratio. In addition, an axial force ratio above 0.2 is detrimental to the joint. 2022-01-07T05:46:51Z 2022-01-07T05:46:51Z 2021 Journal Article Zhang, X. & Li, B. (2021). Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement. Engineering Structures, 228, 111556-. https://dx.doi.org/10.1016/j.engstruct.2020.111556 0141-0296 https://hdl.handle.net/10356/154768 10.1016/j.engstruct.2020.111556 2-s2.0-85097057947 228 111556 en Engineering Structures © 2020 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Beam-Column Joints
Corrosion
spellingShingle Engineering::Civil engineering
Beam-Column Joints
Corrosion
Zhang, Xinchen
Li, Bing
Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
description Corrosive environment adversely affects the durability of existing reinforced concrete (RC) structures as well as its performance under seismic loading. In this paper, the seismic behaviour of corroded reinforced concrete (RC) exterior joint was experimentally evaluated. Eight similar RC exterior joints with various corrosion level of reinforcements were tested under two levels of representative column axial force ratio. Lateral loading resisting, ductility, energy dissipation and stiffness of corroded specimens were examined and compared with uncorroded control specimens. Joint shear stress and the development length of beam longitudinal reinforcement were investigated and compared with available design code. In addition, the joint internal force flow of corroded joint was investigated analytically based on modified strut-and-tie model (STM). Experimental results indicate that corrosion of reinforcements have significant adverse effect on the strength and lateral drift capacity of the joints as well as other mechanical properties. Based on the STM model and parametric study, it is further found that the effect of corrosion level on joint stress level is more significant at higher axial force ratio. In addition, an axial force ratio above 0.2 is detrimental to the joint.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhang, Xinchen
Li, Bing
format Article
author Zhang, Xinchen
Li, Bing
author_sort Zhang, Xinchen
title Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
title_short Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
title_full Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
title_fullStr Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
title_full_unstemmed Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
title_sort seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement
publishDate 2022
url https://hdl.handle.net/10356/154768
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