初期不整が鋼製矩形補剛断面橋脚の繰返し水平耐荷挙動に及ぼす影響に関する解析的検討

抄録

Stiffened rectangular steel piers, often used for bridges, provide high stiffness and buckling resistance. However, the seismic impact of initial imperfections remains unclear, as they can trigger buckling under cyclic horizontal loading, potentially reducing load capacity. This study utilized 3D finite element analysis on SBHS500 steel piers to assess this specific impact. Comparing models with and without these imperfections, the analysis indicated that the mechanical behavior was not clearly affected by the initial imperfection conditions considered in this investigation.