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 : 梁端のみをCFTトラスとした場合,層数・スパン数・スパン長を変化させた場合

概要

論文の詳細を見る
A concrete-filled tubular truss CFT truss is a truss composed of parallel chord members made of CFTs. A multi-story frame using CFT truss girders might have an exellent seismic-resistant capacity, so that the CFT truss could have an exellent derformation capacity without any flexural buckling. In this study, mainly, two topics are discussed. One of two is the local use of CFT trusses at the end portions of girder where plastic derfomations are expected to happen. The local use of CFT trusses will save the weight of concrete and time of concrete casting. The other is the use of CFT truss girders in a multi-spanned frame. The derfomation capacity of a CFT truss is guaranteed unless the plastic elongation of chord members in tension are restrained. In a multi-spanned frame, it should be clear how much a chord member is restrained by the next beam. Additionaly, differences between low and high rise buildings with short or long spanned beams are disscussed.
2005-02-28