摘要
为了进一步探讨方钢管钢骨混凝土轴心受压短柱极限承载力计算方法,在修正的方钢管钢骨混凝土混凝土本构模型基础上,采用有限元法建立了轴压短柱的计算模型,通过模型计算了载荷-轴向变形关系曲线,并与相关文献的试验曲线进行了对比,计算曲线与相关试验曲线吻合较好。通过对计算结果的回归分析,得出了实用的轴压承载力计算公式,利用该公式可进行方钢管钢骨混凝土轴压短柱的极限承载力进行预测。
This study investigated the method for calculating the ultimate bearing capacity on axially-loaded short columns of square steel tube filled with steel reinforced concrete.Based on an improved stress-strain concrete model,the finite element method was used to calculate the loading-strain curves.The results were agreed well with the experimental data.Through regression analysis on the calculated results,a formula for axially-load short columns of square steel tube filled with steel-reinforced concrete was obtained.The formula can estimate the ultimate bearing capacity.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2010年第2期220-223,共4页
Journal of Liaoning Technical University (Natural Science)
基金
辽宁省教育厅科技攻关基金资助项目(20100101)
关键词
方钢管混凝土
轴压短柱
有限元
承载力
计算公式
concrete-filled square steel tube
axially-load short column
finite element
bearing capacity
formula
