CFTトラス梁を用いた鋼構造多層ラーメン架構の耐震性能 : 純鉄骨トラスあるいはH形鋼を梁材とするラーメン架構との比較

概要

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A concrete-filled tubular (CFT) truss is a truss composed of parallel chord members made of CFTs. The web members are not necessarily CFTs but steel tubes or shapes, and they are designed to not yield before the chord members. This sort of truss has an excellent deformation capacity, so that the CFT chords could be prevented from flexural buckling. The objective of this study is to discuss a new seismic-resistant system of a multi-story frame using CFT truss girders, where the trusses are expected to work as full web girders to dissipate the seismic energy even in long spanned frames. The effectiveness is demonstrated by a dynamic response analysis in comparison with a frame with steel truss girders or full-web, H-shaped sections.
2005-03-30