钢骨-钢管混凝土轴压短柱的延性和承载力  

Analysis for the ductility and bearing capacity of axially loaded short steel tubular columns filled with steel-reinforced concrete

作　　者：陈兰响 关萍[1] 王怀亮[1] 

机构地区：[1]大连大学建筑工程学院,辽宁大连116622

出　　处：《辽宁工程技术大学学报（自然科学版）》2015年第5期623-627,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金重点资助项目(508380001);辽宁省教育厅科学研究一般项目(L2012442)

摘　　要：为合理分配钢骨-钢管混凝土组合柱的含钢量及充分发挥组合柱的受力性能,采用有限元软件ADINA数值模拟和理论分析的方法分析不同的钢管厚度、钢骨强度和混凝土强度等级对钢骨-钢管混凝土轴压组合短柱的延性性能和承载力的影响.通过分析,对延性约束指标进行了修正,同时基于回归分析建立了组合柱的承载力计算公式.研究结果表明:用ADINA软件模拟组合柱的受力性能是可行的;延性约束指标能够体现出组合柱的延性性能,为合理配置钢管和钢骨的用量提供了参考依据;建立了简洁且与试验数据吻合良好的承载力计算公式.In order to distribute the reasonable iron content of the steel tube composite columns filled with steel reinforced concrete and give full play to perform mechanical behaviors of the columns, the focuses are the ductility and the axial-load bearing capacity with different thickness of steel tube, the strength of steel-reinforced and the concrete strength grade by finite element software ADINA and theoretical analysis. The ductility constraint index is amended and the calculation formula of the bearing capacity is established by the regression analysis. As a result, the mechanical behaviors of the composite column with ADINA is feasible; the ductility coefficient expression can measure the ductility performance, which will provide the reference for the proper dosage of the steel tube and the reinfbrced steel. The concise calculation formula of bearing capacity coincides well with experimental data, and has a practical engineering significance.

关 键 词：组合柱 受力性能 ADINA 轴压 延性 承载力 

分 类 号：TU398[建筑科学—结构工程]