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Title |
Thermo-Elastic Anlysis of Reinforced Concrete Space Frames by Fiber Model
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Authors |
김화중(Wha-Jung Kim) ; 이헌석(Heon-Seok Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2018.30.1.003 |
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Keywords |
철근콘크리트 구조물 ; 입체 골조 ; 열전도 해석 ; 열탄성 해석 reinforced concrete structure ; space frame ; heat-conduction analysis ; thermal-elastic analysis |
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Abstract |
Recently, as the construction of buildings has become higher and bigger, the damages and collapse of the buildings due to the fire are increase. Especially, it is occurring in the reinforced concrete structures. It is essential to establish the structural behavior of a structure damaged by fire, because it can cause serious deterioration and damage when the reinforced concrete structure is exposed to high temperature for a long time. This study devised a structural behavior analysis method of reinforced concrete space frame including thermal and mechanical properties of reinforced concrete members under elevated temperature for performance based fire resistance design. In this paper, heat-conduction analysis of reinforced concrete members (beam and column) under elevated temperature is performed by selecting actual building model. Using output data of reinforced concrete member element, the results of investigation in the time-dependant the structural behavior under elevated temperature are presented through the thermal-elastic analysis of the space frame. Based on the results, the deformation of the structure under changing temperature was confirmed, and the failure temperature of the structure was estimated by examining the short-term allowable moments and shear forces of the members (beams and columns).
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