不锈钢箱形截面柱抗震性能研究  

Research on seismic behavior of stainless steel box-section column

作　　者：宁克洋 杨璐 班慧勇[3,4] Ning Keyang;Yang Lu;Ban Huiyong(The Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education,Beijing University of Technology,Beijing 100124,China;Beijing Engineering Research Centre of High-rise and Large-span Prestressed Steel Structures,Beijing University of Technology,Beijing 100124,China;School of Civil Engineering,Tsinghua University,Beijing 100084,China;Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124 [2]北京工业大学北京市高层和大跨度预应力钢结构工程技术研究中心,北京100124 [3]清华大学土木水利学院,北京10008 [4]清华大学土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《土木工程学报》2020年第4期23-30,49,共9页China Civil Engineering Journal

基　　金：北京市优秀人才培养资助项目(拔尖自然科学)(2017000026833ZK26);国家自然科学基金创新研究群体项目(51421005)。

摘　　要：文章采用有限元软件ANSYS建立不锈钢箱形截面柱有限元分析模型,并基于试验结果验证了该模型的有效性。采用该模型分析了板件几何初始缺陷、宽厚比和轴压比对不锈钢箱形截面柱抗震性能的影响,并对比分析了奥氏体型不锈钢S30408、双相型不锈钢S22053、碳素钢Q235和低合金高强钢Q460箱形截面柱抗震性能的差异。最后,根据有限元分析结果对现行《建筑抗震设计规范》(GB 50011-2010)中箱形截面柱板件宽厚比限值对于不锈钢箱形截面柱的适用性进行讨论,并针对不锈钢箱形截面柱提出不同抗震等级的延性定量判定标准和宽厚比设计建议。The finite element(FE) software ANSYS was used to establish the FE analysis model of stainless steel box-section column.Based on the experimental results,the FE model was validated.The FE model was used to investigate the influence of initial geometric imperfection of the plate,width-to-thickness ratio and axial load ratio on the seismic behavior of components,and the differences in seismic behavior of box-section column made of S30408,S22053,Q235 and Q460 were compared and analyzed.Based on the results of FE analysis,the applicability of the limits of width-to-thickness ratio of box-section column in the current GB 50011-2010 for stainless steel box-section columns was discussed,and the quantitative ductility criteria and design suggestions of width-to-thickness ratio for stainless steel box-section column,with different seismic grade,were proposed.

关 键 词：不锈钢 箱形截面柱 抗震性能 有限元研究 宽厚比 

分 类 号：TU391[建筑科学—结构工程]