建筑钢结构进展2024，Vol.26Issue(3)：70-79,10.DOI:10.13969/j.cnki.cn31-1893.2024.03.008
花瓣形钢管混凝土柱轴压受力机理和承载力研究
The Axial Compression Mechanism and Load Capacity of Petal-Shaped Concrete-Filled Steel Tubular Columns
摘要
Abstract
Petal-shaped concrete-filled steel tubular(CFST)columns are aesthetically appealing.The cross-sectional composition of petal-shaped CFST columns was defined.The section offset ratio and section symmetry coefficient were proposed to identify the cross-section properties of the petal shape.Cross stiffeners were proposed to improve the composite effect.Based on pier columns in an engineering project and a verified finite element model,the load-resisting mechanisms of petal-shaped CFST stub columns under axial compression was studied.The influence of the stiffener thickness,concrete strength,steel strength,opening diameter and spacing of the stiffener were investigated.The matching relationship between the thickness of the stiffener and steel tube was studied.Based on the theoretical analysis and extensive finite element analysis results,the stiffener thickness to steel tube wall thickness ratio and the nominal tube diameter to thickness ratio were quantitatively suggested.The calculation formulas of axial load-carrying capacity of petal-shaped CFSTs were proposed.关键词
花瓣形钢管混凝土柱/组合效应/多腔钢管混凝土/加劲肋/有限元分析Key words
petal-shaped concrete-filled steel tubular column/composite effect/multi-cell concrete-filled steel tube/stiffener/finite element analysis分类
建筑与水利引用本文复制引用
张涛,甘丹,李扬,黄辉辉,黄尚斌..花瓣形钢管混凝土柱轴压受力机理和承载力研究[J].建筑钢结构进展,2024,26(3):70-79,10.基金项目
国家自然科学基金(52378133),重庆市自然科学基金(CSTB2023NSCQ-MSX0758) （52378133）
