H形鋼のウエブ部分にコンクリートを充填した合成梁が負の曲げモーメントを受ける場合の耐火性能

概要

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Composite beams composed of rolled steel profile concreted between flanges (hereafter, SC composite beam) were subjected to fire resistance tests. Two types of specimens were used in the tests: fix end of the SC composite beams that received the negative bending moment, and sections where cylindrical CFT columns were connected with SC composite beams. In the first test, the size of the SC composite beams cross-section and the working load were used as parameters to discover the relationship between the bending moment and fire resistance time. In addition, if the bending moments were identical, the SC composite beams had longer fire resistance time for negative bending moments than for positive bending moments. In the second test, if the steel pipe used in the connecting section of the CFT columns were thick, they could convey a certain amount of bending moment and shearing force from SC composite beams, even without a diaphragm.
社団法人日本建築学会の論文
2003-06-30