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...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/154768 |
| _version_ | 1826126400120160256 |
|---|---|
| author | Zhang, Xinchen Li, Bing |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhang, Xinchen Li, Bing |
| author_sort | Zhang, Xinchen |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T06:52:02Z |
| format | Journal Article |
| id | ntu-10356/154768 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:52:02Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-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. |
| spellingShingle | Engineering::Civil engineering Beam-Column Joints Corrosion Zhang, Xinchen Li, Bing Seismic performance of exterior reinforced concrete beam-column joint with corroded reinforcement |
| title | 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_short | 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 |
| topic | Engineering::Civil engineering Beam-Column Joints Corrosion |
| url | https://hdl.handle.net/10356/154768 |
| work_keys_str_mv | AT zhangxinchen seismicperformanceofexteriorreinforcedconcretebeamcolumnjointwithcorrodedreinforcement AT libing seismicperformanceofexteriorreinforcedconcretebeamcolumnjointwithcorrodedreinforcement |