摘要
为研究带肋薄壁方钢管混凝土短柱的受力性能,以钢管宽厚比、含钢率和加劲肋个数为参数,设计了26个薄壁方钢管混凝土短柱,主要分析了带肋钢管混凝土短柱的极限承载力,破坏形态以及各参数对其受力性能的影响规律。试验结果表明:设置加劲肋不仅能提高试件纵向承载力,而且有效减缓钢管壁的局部鼓曲。随着试件含钢率即加劲肋高度的增加,试件承载力和管壁稳定性有增加的趋势。
In order to study the mechanics behavior of stub-column concrete-filled thin-walled stiffened square steel tube, taking the width to thickness ratio, the steel ratio and the number of stiffeners as parameters, 26 stub-column concrete-filled thin-walled stiffened square steel tube were designed.The ultimate bearing capacity, failure mode and the influence of various parameters on the mechanical behavior of concrete filled tubular short columns are analyzed.The experimental results show that using stiffener can not only improve the longitudinal bearing capacity of the specimen, but also effectively relieve the local buckling of the steel tube wall.The bearing capacity and the stability of the pipe wall are increased with the increase of the steel ratio of the specimen and the height of the stiffener.
作者
李斌
郭世壮
高春彦
LI Bin1, GUO Shizhuang1, GA O Chunyan1.2(1.School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; 2.School of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Chin)
出处
《混凝土》
CAS
北大核心
2018年第3期53-55,59,共4页
Concrete
基金
国家自然科学基金项目(51068021)
内蒙古自然科学基金项目(2013MS0715)
关键词
带肋方钢管混凝土
薄壁
轴压
受力性能
concrete-filled stiffened square steel tubular columns
thin-walled
axial compression
mechanical performance
