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Title |
Effect of Load Velocity on Seismic Performance of Steel Beam-column Connection
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Authors |
이기원(Ki-Won Lee) ; 오상훈(Sang-Hoon Oh) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.6.182 |
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Keywords |
하중속도; 접합상세; 취성파괴; 소성변형능력; 내진성능 Load velocity; Connection detail; Brittle fracture; Plastic deformation performance; Seismic performance |
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Abstract |
Brittle feature is one of the fracture behaviors of structure s and has a great influence on the seismic performance of structure materials. Theload velocity acts as one of the main causes of brittle fracture, and in particular, in situations such as earthquakes, a high load velocity acts on buildings. However, most of the seismic performance evaluation of the domestic and external steel connections is conducted through static experiments. Therefore,there is a possibility that brittle fracture due to factors such as degradation of material toughness and reduction of maximum deformation rate dueto high load velocity during an earthquake was not sufficiently considered in the existing seismic performance evaluation. This study conducts a statictest at a low load velocity according to the existing experimental method and a dynamic test at a high load velocity using a shaking table, respectively. It compares and analyzes the fracture shape and structural performance according to the results of each experiment, and finally analyzes the effect ofthe load velocity size on the seismic performance of the connection.
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