鋼梁-柱部材の加熱時構面内弾塑性クリープ変形挙動に関する研究

概要

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Numerical studies on the elasto-plastic creep thermal deformation behavior of steel beam-columns at elevated temperatures are carried out to get information for the fire safety design of steel frames. The combined nonlinear analysis method by the one-dimensional finite element technique is adopted to simulate the beam-column behavior, in which the mechanical model of steel material at continuously varying temperature proposed by F. Furumura in Ref. 5) is used. The slenderness ratio, the axial load ratio, and the moment load ratio of steel beam-columns are selected for analytical parameters. The influence of the reduction of mechanical properties and the increase of creep strain in steel materials at high temperature on the behavior of steel beam-columns and the influence of the beam pushing action on the collapse temperature of beam-columns are investigated.
社団法人日本建築学会の論文
1989-01-30