冷弯薄壁型钢轴压矩形空心管试验研究及承载力分析.pdf

《冷弯薄壁型钢轴压矩形空心管试验研究及承载力分析.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第46卷第9期2015年9月建筑技术ArchitectureTechnolo·853·、b1．46No．9Sept．2015冷弯薄壁型钢轴压矩形空心管试验研究及承载力分析姚行友2，郭彦利2，刘忠勇2，宋慧2(1_同济大学建筑工程系，200092，上海2．南昌工程学院江西省水利土木特种加固与安全监控工程研究中心，330099，南昌)摘要：对32根壁厚小于2mm的冷弯薄壁型钢轴压矩形空心管构件进行试验研究，分析构件屈曲模式和极限承载力，采用GB50018-2002《冷弯薄壁型钢结构技术规范》和ABAQUS有限元程序计算构件承载力并与试验结果进行分析比较。结果表明：冷弯薄壁型

2、钢轴压矩形空心管构件由于板件宽厚比较大易发生局部屈曲，通过GB50018-2002《冷弯薄壁型钢结构技术规范》可用于壁厚小于2mm的冷弯薄壁型钢轴压矩形空心管构件的承载力计算，Abaqus有限元程序能较好地模拟冷弯薄壁型钢轴压矩形空心管构件的屈曲模式和分析其极限承载力。关键词：冷弯薄壁型钢；轴心受压构件；矩形空心管；局部屈曲中图分类号：TU317文献标志码：A文章编号：1000—4726(2015)09—0853—04EXPERIMENTALSTUDYANDLOAD-CARRYINGCAPACITYANALYSISOFCOLD-FORMEDTHlN．WALLEDSTEE

3、LAXIALLYCoMPRESSEDRECTANGULARHoLLOWSTEELCOLUMNSYAOXing-you，GUOYan—li。LIUZhong-yong~,SONGHui(1．DepartmentofBuildingEngineering，TongiiUniversity,200092，Shanghai，China；2．JiangxiProvineiaEngineeringResearchCenteroftheSpecialReinforcementandSafetyMonitoringTechnologyinHydraulic＆CivilEngineeri

4、ng．NanchangInstituteofTechnology,330099，Nanchang，China)Abstract：TheobjectedofthisPaDeristoanalyzethebucklingmodeandthecalculatemethodoftheultimates~engthofcold-formedthin-walledsteelaxially．compressedrectangularhollowsections．Compressiontestswereconductedon32shortandintermediate1engthrec

5、tangularhollowsectionswiththethicknessbeinglessthan2mm．TestresultshavebeencomparedwiththetheoreticalresultscalculatedbyGB50018-2002Technicalcodeofcold-formedthin—wallsteelstructuresandanalyzedbyFiniteElementMethodusingAbaqusforinvestigationonthesuitableestimationmethodofload．carryingcapa

6、city．Theresultsshowthat，thelocalbucklingoccureasilyfortheserectangularhollowsectionsbecauseofthebigwidth．to—thicknessratioforelements．therelatedprovisionsinGB500l8～2O02Technicalcodeofcold：formedthin．wallsteelstructuresCanbereliablyusedtoestimatetheload-carryingcapacityofcold．formedthin-w

7、alledsteelaxially-compressedrectangularhollowsectionswiththethicknessbeinglessthan2mm．FiniteElementMethodusingABAQUScansimulatewellthebucklingmodeandload·-carryingcapacitiesofthecold-formedthin--walledrectangularhollowsections．Keywords：cold-formedthin-walledsteel；axially—