摘要
针对钢管混凝土核心短柱轴压状态,采用汉基塑性全量理论对钢管进行极限承载力分析,得到屈服时钢管竖向应力对承载力的贡献,同时对核心混凝土采用Drucker-Prager屈服准则进行钢管约束下的承载力的计算分析。考虑配箍率对极限承载力的影响,提出了不同配箍率下的钢管混凝土核心短柱的极限承载力计算公式,并与现有试验数据进行对比,结果吻合良好,为钢管混凝土轴压短柱极限承载力的计算提供一种新的方法。
Under the state of axial compression for core short columns with concrete-filled steel tubular, the Hencky theory was introduced to analysis the steel tubular, obtained the contribution of the vertical stress of the steel tubular when the core column yielded to the ultimate bearing capacity. The Drucker-Prager strength criterion was used to analysis core concrete bearing capacity. Considering the effect of transverse reinforcement ratio, the different formula was proposed according to the different transverse reinforcement ratio. Compared with existing experimental data and other ways, the calculating results are in good agreement with them and provide a new approach to calculate the ultimate bearing capacity of cote short columns for with concrete filled steel tubular under axial compression.
出处
《四川建筑科学研究》
2014年第1期5-8,共4页
Sichuan Building Science
基金
上海师范大学科研基金(SK201245)
关键词
钢管混凝土
核心短柱
轴心受压
极限承载力
concrete-filled steel tubular
short columns
axial compression
ultimate bearing capacity
