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이방향 중공슬래브의 내화구조성능 영향인자에 관한 해석적 연구
조해정,정주홍,이승창,최창식 한국구조물진단유지관리학회 2011 한국구조물진단학회 학술발표회논문집 Vol.2011 No.9
The objective of this paper is to find the influence factor on the fire resistance of Biaxial Hollow Slab by finite element results using ANSYS program. The parametric analysis which includes thickness of the slab, thickness of cover, hollow shape, internal covering thickness between hollow shape and steel was carried out. As a result of this study, the thicker thickness of the cover and slab the better temperature reduction effect showed. However, distance between hollow shape and steel may influence on the concentration effective of temperature for bottom of Biaxial Hollow Slab.
도넛형 이방향 중공슬래브의 내화성능에 관한 실험적 연구
정주홍(Chung, Joo-Hong),조해정(Cho, Hae-Jeong),이승창(Lee, Seung-Chang),최현기(Choi, Hyun-Ki),최창식(Choi, Chang-Sik) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.12
The biaxial hollow slabs are decreased self-weight of slab and retained structural performance similar with general reinforced concrete slab. The structural performance of this system was evaluated through various study of biaxial hollow slab. But, for actual application of biaxial hollow slab, this system is important to evaluation for fire resistance performance as well as structural performance. However, there is a lack of research on fire endurance assessment of biaxial hollow slab. Generally, the reinforced concrete slab has great fire resistance performance caused by excellent thermal material properties of concrete. But, In case of biaxial hollow slab will be expected to show different temperature distribution and fire endurance performance compare to reinforced concrete slab. Because hollow slab has internal void space that occurs decreasing regenerative effect of concrete and formation of internal air layer. Therefore, this paper was performed the fire test of biaxial hollow slab with donut type shape. and evaluated fire resistance performance of donut type biaxial hollow slab using Fire resistance design of Euro Code2. The result of this study, the thickness of slab affects the load bearing of fire resistance and temperature of unheated side. Also distance between hollow shape and steel is significant influence factor on the fire resistance of donut type biaxial hollow slab.