建筑钢结构进展2017，Vol.19Issue(2)：60-67,8.DOI:10.13969/j.cnki.cn31-1893.2017.02.009
均布与局部轴压作用下薄壁钢筒仓屈曲性能研究
Buckling Behavior of Thin-Walled Steel Silos Subjected to Combination of Globally and Partially Distributed Axial Compression
摘要
Abstract
Buckling behavior of thin-walled steel silos subjected to combination of globally and partially distributed axial compression is different from that under global distributed axial compression only.Buckling behavior of thin-walled steel silos subjected to combination of globally and partially distributed axial compression has been investigated using finite element analysis accounting for the geometric imperfection of circumferential weld.Effects of uniform compressive load ratio,distribution angel of partial compressive load,radius to thickness ratio,as well as magnitude of initial imperfection on the buckling strength are studied.Numerical results show that buckling strength of steel silo under the combination of globally and partially distributed axial compression decreases with the increase in uniform compressive load ratio,initial imperfection magnitude,distribution angle of partial compressive load and radius to thickness ratio.Based on the numerical analysis results,a design formula for the ultimate buckling stress is proposed.The buckling stress predicated by proposed equations agrees well with that obtained by the finite element model.关键词
薄壁钢筒仓/屈曲性能/均布轴压/局部轴压/几何缺陷Key words
thin-walled steel silo/buckling behavior/globally distributed axial compression/partially distributed axial compression/geometrical imperfection分类
建筑与水利引用本文复制引用
王跃,郑玉超,王培军,朱绪林..均布与局部轴压作用下薄壁钢筒仓屈曲性能研究[J].建筑钢结构进展,2017,19(2):60-67,8.基金项目
国家自然科学基金(51578322),山东省重点研发计划资助项目(2016GGX103013) （51578322）
