考虑初始缺陷的厚壁冷弯方钢管柱承载力研究Study on axial compressive loading capacity of cold-formed steel square hollow sections with initial imperfections
王小平,汪辉,蒋沧如
摘要(Abstract):
运用ANSYS有限元软件,在综合考虑初始几何缺陷、残余应力、冷弯效应等因素的基础上,分析了厚壁冷弯方钢管轴心压杆的极限承载力,得出其稳定系数,并与《钢结构设计规范》、《冷弯薄壁型钢结构技术规范》的计算结果进行对比,提出了厚壁冷弯方钢管轴心压杆稳定系数的初步确定方法。
关键词(KeyWords): 有限元法;冷弯型钢;方钢管;轴心压杆;初始缺陷;极限承载力
基金项目(Foundation):
作者(Author): 王小平,汪辉,蒋沧如
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参考文献(References):
- [1]GB50018-2002,冷弯薄壁型钢结构技术规范[S].
- [2]陈 骥.钢结构稳定理论与设计(第二版)[M].北京:科学出版社,2003.
- [3]WengC.C.andPekozT..Compressiontestsofcold-formedsteelcolumns[J].JournalofStructuralEngineering,ASCE,1990,116(5):1230~1246.
- [4]YoungB.andHancockG.J..Testsofcld-formedchannelswithlocalanddistortionalbuckling[J].JournalofStructuralEngineering,ASCE,1992,117(7):1786~1803.
- [5]SchaferB.W.andPekoz,T..Computationalmodelingofcold-formedsteelcharacterisinggeometricimperfectionsandresidu-alstresses[J].Construct.SteelRes,1998,47(3):193~210.
- [6]SivakumaranK.S.,Abdel-RahmanN..Afiniteelementanalysismodelforthebehaviourofcold-formedsteelmembers[J].Thin-walledStructures,1998,31:305~324.
- [7]GuoY.L..Localandoverallinteractiveinstabilityofthin-walledboxsectioncolumns[J].ConstructionalSteelResearch,1992,22(1):1~19.
- [8]PiYongLin&TrahairN.S..Lateralbucklingstrengthsofcold-formedrectangularhollowsections[J],Thin-WalledStructures,1995,22:71~95.
- [9]PeterW.Key&GregoryJ.Hancock.Atheoreticalinvestigationofthecolumnbehaviourofcold-formedsquarehollowsec-tions[J],Thin-WalledStructures,v16,1993,31~64.
- [10]何保康,周天华.矩形钢管截面b/t、h/t的限值确定[J].钢结构,2001,(2):29~38.
- [11]汪 辉.考虑初始缺陷的中厚壁冷弯钢管柱极限承载力研究[D].武汉:武汉理工大学出版社,2004.
- [12]Karren,K.W..Cornerpropertiesofcold-formedsteelshapes[J].JournaloftheStructuralDivision,ASCEProceedings,Vol.3Feb,1967.401~432.
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