Abstract
본 연구에서는 건축물의 피난 및 방화에 관한 규칙 제3조에 명시된 법정내화구조 중 보의 내화성능을 평가하고, 국내외 규정과 비교 및 분석을 하였다. 현행 규칙에 따르면 국내의 법정내화구조는 피난 및 방화구조에 관한 규칙의 시방기준을 만족하면 최대 3시간의 내화성능을 갖는 것으로 본다. 법정내화구조로서 보는 총 5개의 구조가 있으나, 본 연구에서는 우선 철근콘크리조를 대상으로 피복두께에 따른 내화성능을 평가하였다. 실험결과 하중비 0.5와 피복두께 40 mm를 확보할 경우, 최대 법정요구내화시간인 3시간을 만족하는 것으로 나타났다. 철골철망 모르타르조 보의 경우, 피복두께 60 mm 하중비 0.4에서 3시간 내화성능을 확보할 수 있다. This study evaluates the fire resisting capacity of the beam of the legal fire resistance construction, which establishes the Article 3 of the Regulations on Escape and Fire Resistance of Buildings. There are a total of five structures that we consider as legal fire resistance constructions, however, this study has a primary target of the reinforced concrete beam, and tests the fire-resistant performance depend on the covering depth of reinforce concrete. The results showed that it meets the three hours, the maximum statutory fire resistance time, if it was a load ratio of 0.5 and covering depth of 40 cm. Steel framed mortar beam is legal fire resistance structure that it was possessed three hours fire resistance performance, if it was a load ratio of 0.4 and covering depth of 60 mm.
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