弦材にコンクリートを充填した鋼管トラス柱の曲げねじれ座屈挙動と耐力評価

概要

論文の詳細を見る
Steel tubular trusses whose chords are filled with concrete have the higher load carrying capacities in comparison with vacant tubular trusses. The load carrying capacity of a vacant tubular truss in general decreases radically due to the lateral-torsional buckling. On the other hand, a concrete-filled tubular truss can be designed to have a stable behavior of yielding of a tension chord, since the compression chord is possible to have the larger axial strength than yield strength of the tension chord due to filled concrete. We have carried out an experimental work on concrete-filled tubular trusses which are simply supported to out-of-plane and subjected to inplane bending moments and axial loads proportionally. The experimental result includes two cases of stable and unstable behaviors of the trusses. We propose a method of strength estimation of the concrete-filled tubular trusses and show the design condition of the stable trusses.
社団法人日本建築学会の論文
1994-05-30