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Title |
Behavior of RC Beams Strengthened with Carbon Fiber Sheets Under Repeated Loading
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Keywords |
탄소섬유시트 ; 반복하중 ; 강도특성 ; 연성특성 Carbon fiber sheets ; Repeated loading ; The characteristics of strength ; The characteristics of ductility |
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Abstract |
This study deals with the response of reinforced concrete beams strengthened with carbon fiber sheets. Test beams are subjected to static loading and repeated loading. Based on the static test results of the RC beams strengthened with carbon fiber sheets, repeated loading tests are performed. The variables of repeated loading test are composed of the number of carbon fiber sheets, the existence of U-shaped band at the end for anchoring, and loading rate of repeated loading, etc. Test results show the flexural behavior, the characteristics of strength, the characteristics of ductility, the change of flexural rigidity, and the amount of energy loss of RC beams under monotonic incremental loading and repeated loading. The failure strain of carbon fiber sheets is also estimated under repeated loading. From the experimental results, this work presents a basis of the data needed to analyze and design the static and dynamic flexural response of RC beams strengthened with carbon fiber sheets.
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