|
Title |
Comparison on the Behaviors of Inverted Tee and Rectangular Precast Prestressed Concrete Beams Under Combined Bending and Torsion
|
|
Keywords |
휨 ; 비틀림 ; 역티형 보 ; 프리캐스트 프리스트레스트 콘크리트 보 Bending ; torsion ; inverted tee beam ; prestressed concrete beam |
|
Abstract |
This study presents the behaviors of the typical architectural precast prestressed concrete beams, inverted tee and rectangular beams, subjected to combined flexural and torsional loads. For this purpose, two inverted-tee beams were designed with a parking live load, 5kN/㎡, and a market load 12kN/㎡ according to the currently used typical shape in the domestic building site. Also, two rectangular beams were also designed as the same bottom dimension and area, and reinforced for similar strength as in the cases of inverted tee beams. Total of four beams were tested, under combined bending and torsion, analysed and compared. Test results showed that the cracking and ultimate flexural strength of the beams decreased under torsional loading. However, two different shaped-beams had roughly the same load resisting capacity in service and ultimate states.
|