Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System
In this study, the Kagome truss damper, a metallic wire structures, was introduced and its mechanical properties were investigated through theoretical analyses and experimental tests. The yield strength of the Kagome damper is dependent on the geometric shape and diameter of the metallic wire. The K...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/1/41 |
| _version_ | 1827666290315100160 |
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| author | Moo-Won Hur Yonghun Lee Min-Jun Jeon Sang-Hyun Lee |
| author_facet | Moo-Won Hur Yonghun Lee Min-Jun Jeon Sang-Hyun Lee |
| author_sort | Moo-Won Hur |
| collection | DOAJ |
| description | In this study, the Kagome truss damper, a metallic wire structures, was introduced and its mechanical properties were investigated through theoretical analyses and experimental tests. The yield strength of the Kagome damper is dependent on the geometric shape and diameter of the metallic wire. The Kagome damper has higher resistance to plastic buckling as well as lower anisotropy. Cyclic shear loading tests were conducted to investigate the energy dissipation capacity and stiffness/strength degradation by repeated loadings. The hysteretic properties obtained from the tests suggest that a modification of the ideal truss model with a hinged connection could be used to predict the yield strength and stiffness of the damper. For seismic retrofitting of a low-rise RC moment frame system, a wall-type Kagome damping system (WKDS) was proposed. The effectiveness of the proposed system was verified by conducting cyclic loading tests using a RC frame with/without the WKDS (story drift ratio limit 1.0%). The test results indicated that both the strength and stiffness of the RC frame increased to the target level and that its energy dissipation capacity was significantly enhanced. Nonlinear static and dynamic analyses were carried out to validate that the existing building structure can be effectively retrofitted using the proposed WKDS. |
| first_indexed | 2024-03-10T01:48:40Z |
| format | Article |
| id | doaj.art-fcb9bffbc8f44064a3d98006a092dfba |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T01:48:40Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-fcb9bffbc8f44064a3d98006a092dfba2023-11-23T13:11:19ZengMDPI AGBuildings2075-53092022-01-011214110.3390/buildings12010041Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping SystemMoo-Won Hur0Yonghun Lee1Min-Jun Jeon2Sang-Hyun Lee3Department of Architectural Engineering, Dankook University, Yongin-si 16890, Gyeonggi-do, KoreaDepartment of Architectural Engineering, Dankook University, Yongin-si 16890, Gyeonggi-do, KoreaDepartment of Architectural Engineering, Dankook University, Yongin-si 16890, Gyeonggi-do, KoreaDepartment of Architectural Engineering, Dankook University, Yongin-si 16890, Gyeonggi-do, KoreaIn this study, the Kagome truss damper, a metallic wire structures, was introduced and its mechanical properties were investigated through theoretical analyses and experimental tests. The yield strength of the Kagome damper is dependent on the geometric shape and diameter of the metallic wire. The Kagome damper has higher resistance to plastic buckling as well as lower anisotropy. Cyclic shear loading tests were conducted to investigate the energy dissipation capacity and stiffness/strength degradation by repeated loadings. The hysteretic properties obtained from the tests suggest that a modification of the ideal truss model with a hinged connection could be used to predict the yield strength and stiffness of the damper. For seismic retrofitting of a low-rise RC moment frame system, a wall-type Kagome damping system (WKDS) was proposed. The effectiveness of the proposed system was verified by conducting cyclic loading tests using a RC frame with/without the WKDS (story drift ratio limit 1.0%). The test results indicated that both the strength and stiffness of the RC frame increased to the target level and that its energy dissipation capacity was significantly enhanced. Nonlinear static and dynamic analyses were carried out to validate that the existing building structure can be effectively retrofitted using the proposed WKDS.https://www.mdpi.com/2075-5309/12/1/41Kagome truss damperwall-type Kagome damping systemseismic retrofitcyclic loading tests |
| spellingShingle | Moo-Won Hur Yonghun Lee Min-Jun Jeon Sang-Hyun Lee Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System Buildings Kagome truss damper wall-type Kagome damping system seismic retrofit cyclic loading tests |
| title | Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System |
| title_full | Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System |
| title_fullStr | Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System |
| title_full_unstemmed | Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System |
| title_short | Seismic Strengthening of RC Structures Using Wall-Type Kagome Damping System |
| title_sort | seismic strengthening of rc structures using wall type kagome damping system |
| topic | Kagome truss damper wall-type Kagome damping system seismic retrofit cyclic loading tests |
| url | https://www.mdpi.com/2075-5309/12/1/41 |
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