1993•대한건축학회 학술발표대회 논문집 - 구조계Requires access
프리플렉스 보의 내력 및 변형특성에 관한 실험적 연구 ( Experimental Study on the Strength and Deformation characteristics of Preflex Beam )
유영찬, 안형준, 최창식, 오영석, 이리형, 문태섭
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Abstract
A preflex beam is a type of concrete encased steel beam
of which prestressing has been introduced in the lower
flange concrete. To build up preflex beam, preflexion
load are first applied to the steel beam, and secondly,
while keeping the steel beam bent, the lower flange concrete
is cast. Then, releasing the applied loads after the
concrete hardened, the prestress is introduced into the
concrete. This preflex beam has merits such as large
flexural stiffness with smaller beam depth and low
maintenance costs.
Recently, in this merits, it has been demanded to apply
the preflex beam to building structure of large span such
as bowling center and gymnasium.
In this paper, the strength and deformation characteristics
of preflex beam are discussed through positive and negative
bending experiments of preflex beam as a strength test.