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Title |
Proposal and Performance Verification of a Seismic Adapter for Steel Brace Connections for In-plane Reinforcement of School Buildings
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Authors |
허석재(Seokjae Heo) ; 정란(Lan Chung) ; 백인관(In-Kwan Paik) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.6.162 |
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Keywords |
내진 보강; 내진 어댑터; 강구조물; 기존 내진 보강; 연결 어댑터 Seismic retrofitting; Seismic adapter; Steel reinforcement; Conventional seismic retrofitting; Connection adapter |
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Abstract |
In this study, The details for a seismic adapter designed to easily connect concrete structures and reinforcement materials for the in-plane reinforcement of aged structures were proposed. Proposed seismic adapter was tested for performance using a dynamic simulation on a 2-story column-beam structure, scaled to half of the real size. The experimental results showed that the reinforced test specimens using the seismic adapter improved their energy dissipation capacity by 3.5 times compared to the non-reinforced specimens. It was confirmed that the seismic adapter experienced no damage within its general usage range, thus proving its effectiveness. Subsequently, upon loading until the limit of deformation (a deformation angle of 3.3%), it was observed that one of the M10 bolts connecting the adapter and the reinforcement at the lower part of the first floor broke. Considering this finding, when applying seismic retrofitting in real situations, emphasis should be placed on the design of the bolts and anchors connecting the seismic adapter. This aspect warrants further research for validation.
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