장방형 개구부를 갖는 유공합성보의 실험적 연구 ( An Experimental Study on the Behavior of Composite Beams with Unreinforced Rectangular Web Openings )

A model for the strength of steel-concrete composite beams with unreinforced circular web openings is presented. Specimens of three composite beams were tested. Opening dimensions in web were limited, with depths equal to 55 percent of steel beam depth and lengths equal to the diameter of circular web openings. Dimensions of circular web openings were equal to rectangular web openings which were reported before. As the results, this paper could propose basic data for design of composite beams with unreinforced circular web openings.