冷弯高强钢椭圆管柱力学性能有限元分析  

Finite element analysis of mechanical properties of cold-formed high-strength steel elliptical hollow section columns

作　　者：黄风缘 葛文轩 龚陈阳 郭晶 梁欢 Huang Fengyuan;Ge Wenxuan;Gong Chenyang;Guo Jing;Liang Huan(School of Resources and Civil Engineering,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《山西建筑》2024年第13期62-66,共5页Shanxi Architecture

基　　金：东北大学大学生创新创业训练计划项目“冷弯椭圆钢管混凝土的受力性能分析及设计方法研究”(No.231113)。

摘　　要：冷弯高强钢椭圆管柱由于其椭圆截面的几何特殊性和优越的力学性能而被广泛应用。然而,目前国内外缺乏系统性的冷弯高强钢椭圆截面的研究和设计指导。现通过数值模拟的方法,分析了冷弯高强钢椭圆管柱的轴压性能,并将得到的有限元数据与现行的欧洲规范进行对比。对比表明,欧洲规范中冷弯高强钢椭圆管柱的屈曲曲线过于保守。由此,提出了新的设计曲线,为冷弯高强钢椭圆管柱提供新的设计参考。Cold-formed high-strength steel elliptical hollow section columns are widely used due to their unique geometric characteristics and superior mechanical properties.However,there is currently a lack of systematic research and design guidance for cold-formed high-strength steel elliptical hollow sections both domestically and internationally.The axial compressive properties of cold-formed high-strength steel elliptical hollow section columns were analyzed by numerical simulation,and the obtained finite element data was compared with the current European Code.The comparison indicates that the buckling curve for cold-formed high-strength steel elliptical hollow section columns in the European standards is overly conservative.Therefore,a new design curve is proposed,which will provide a new design reference for cold-formed high-strength steel elliptical hollow section columns.

关 键 词：有限元 椭圆高强钢管 轴压屈曲 长细比 

分 类 号：TU392.3[建筑科学—结构工程]