卷边薄壁H型钢单向受弯构件的性能研究的中期报告中期报告摘要：本报告研究了卷边薄壁H型钢单向受弯构件的性能，通过有限元分析和实验验证，探究了其受弯承载力、刚度、变形能力和失稳性能。在有限元分析中，采用ANSYS软件建立了卷边薄壁H型钢单向受弯构件的三维有限元模型，对其在受弯过程中的应力、应变、位移和扭矩等参数进行了模拟计算。实验方面，选取了不同厚度和几何尺寸的卷边薄壁H型钢单向受弯构件进行了弯曲试验，得到了实验数据。并将有限元分析结果和实验数据进行了比较。结果表明，卷边薄壁H型钢单向受弯构件具有良好的受弯承载能力和稳定性能，且刚度较高、变形能力大。对比不同厚度和几何尺寸的构件，发现厚度和截面尺寸对受弯承载能力和刚度产生较大影响，而对于失稳性能影响不大。此外，实验结果与有限元分析结果吻合度较高，验证了有限元模型的准确性。关键词：卷边薄壁H型钢单向受弯构件；有限元分析；弯曲试验；受弯承载力；刚度；变形能力；失稳性能。Abstract：Thisreportstudiedtheperformanceofrolledthin-walledH-shapedsteelmembersunderone-waybending,exploredtheirbendingcarryingcapacity,stiffness,deformationcapacity,andinstabilityperformancethroughfiniteelementanalysisandexperimentalverification.Inthefiniteelementanalysis,athree-dimensionalfiniteelementmodeloftherolledthin-walledH-shapedsteelmemberunderone-waybendingwasestablishedusingANSYSsoftware.Thestress,strain,displacement,andtorqueparametersduringbendingweresimulatedandcalculated.Intheexperimentalpart,bendingtestswereperformedonrolledthin-walledH-shapedsteelmemberswithdifferentthicknessesandgeometricaldimensions,andexperimentaldatawereobtained.Theresultsoffiniteelementanalysisandexperimentaldatawerecompared.Theresultsshowedthattherolledthin-walledH-shapedsteelmemberunderone-waybendinghadgoodbendingcarryingcapacityandstabilityperformance,andhadhighstiffnessandlargedeformationcapacity.Comparingthememberswithdifferentthicknessesandgeometricaldimensions,itwasfoundthatthethicknessandcross-sectionaldimensionshadagreaterimpactonthebendingcarryingcapacityandstiffness,whiletheimpactoninstabilityperformancewasnotsignificant.Inaddition,theexperimentalresultswereingoodagreementwiththefiniteelementanalysisresults,whichverifiedtheaccuracyofthefiniteelementmodel.Keywords:Rolledthin-walledH-shapedsteelmemberunderone-waybending;FiniteElementAnalysis;Bendingtest;Bendingcarryingcapacity;Stiffness;Deformationcapacity;Instabilityperformance.