建筑钢结构进展2024，Vol.26Issue(2)：34-42,9.DOI:10.13969/j.cnki.cn31-1893.2024.02.004
方钢管超轻混凝土短柱轴压性能试验研究
Experimental Study on the Axial Compression Behavior of Ultra-Light Concrete-Filled Square Steel Tubular Short Columns
摘要
Abstract
Sixteen ultra-light concrete-filled square steel tubular short columns and eight hollow steel tubular short columns were tested under axial compression.The failure mode and mechanical behavior of ultra-light concrete-filled square steel tubular short columns were studied by taking the strength of ultra-light concrete and the steel ratio as parameters.The results show that the confinement effect of steel tube on core concrete is stronger with the decrease of ultra-light concrete strength.With the increase of steel ratio,the bearing capacity and deformation capacity of members increase.However,when the steel ratio is higher than 0.25,the presence of ultra-light concrete has little effect on the bearing capacity and deformation capacity of the members.Based on the superposition theory,a formula for calculating the bearing capacity of ultra-light concrete-filled square steel tubular short columns is proposed.关键词
钢管超轻混凝土短柱/轴压试验/约束效应/含钢率/轴压极限承载力Key words
ultra-light concrete-filled steel tubular short column/axial compression test/confinement effect/steel ratio/ultimate bearing capacity under axial compression分类
建筑与水利引用本文复制引用
刘志轩,曲慧,陈琦,张威..方钢管超轻混凝土短柱轴压性能试验研究[J].建筑钢结构进展,2024,26(2):34-42,9.基金项目
山东省自然科学基金(ZR2020ME238),烟台市科技发展计划项目(2020XDRH104、2022MSGY052) （ZR2020ME238）
