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Title |
The Experimental Study of Full-scale Optimized Composite Beam (OCB) Reinforced with Open Strands
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Authors |
이두성(Doo-Sung Lee) ; 김태균(Tae-Kyun Kim) ; 채규봉(Gyu-Bong Chae) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2015.27.5.471 |
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Keywords |
OCB 부재 ; 장경간 ; 실험연구 ; 건축보 ; 하이브리드 구조 OCB ; long-span ; experimental test ; architectural beam ; hybrid structure |
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Abstract |
The building structure is planned to maximize the use of space in recent. It was developed of a hybrid OCB (Optimized Composite Beam) for trying to take advantage of the maximize space. The OCB is composed of the steel h-beam section reinforced by open strands in negative moment zone and the psc concrete section in positive zone. Flexural behaviors of typical architectural bybrid OCB section was investigated. The 15 m OCB specimen was tested under three point static loading system. Following results are obtained from the tests; 1) The OCB with 15 m span develop initial flexural crackings under the 171% of full service loading. 2) Overall deflections of OCB under the service loads are less than those of the allowable limit in KCI Code provision. 3) The crack patterns, failure mode and ultimate load capacity of test specimen and F.E. model in this paper and they are compared to each other. The OCB is verified of structural reliability from the experimental results.
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