2008•대한건축학회 학술발표대회 논문집 - 구조계Requires access
제안형 철골가새를 이용한 철근콘크리트 골조의 내진보강
이락근, 서배근, 길종일, 양일승, 김순철
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Abstract
The original steel braced frame retrofit method is difficult to apply to the inner frames of buildings because of weight and size of steel brace. On the other hand, a retrofit method of steel braced frames having ductile fiber reinforced cementitious composites (DFRCCs) and steel bars at the mid span of the steel brace member is apply to the inner frames of building because steel brace frame are divided by three part. The tension force is transmitted only through the steel brace and the compression force is transmitted by the prestressed bars to the DFRCCs of the joint which connect the three brace units. Results from cyclic tests of three specimens clearly showed that specimen with original steel braces and suggested steel brace using DFRCCs and steel bars ensure better strength and stable performance than pure RC frame. Also, the proposed steel brace be shown improved construction efficiency for retrofit than original steel brace frame retrofit method.