IndustrialConstructionVol.53,No.4,2023工业建筑2023年第53卷第4期115Z2类疲劳破坏叠合板组合梁疲劳性能试验研究∗袁西贵1张凯2(1.成都职业技术学院城建学院,成都610218;2.四川职业技术学院建筑工程学院,四川遂宁629000)摘要:为推广装配式建造技术及钢-混凝土组合梁在桥梁结构和吊车梁中的应用,有必要对各类构造细节的组合梁疲劳寿命进行试验研究,本论文通过对6根组合梁(其中5根叠合板组合梁,1根现浇板组合梁)施加等幅疲劳荷载,并采用双对数函数对其中5根发生Z2类构造细节疲劳破坏组合梁试验数据进行线性拟合,得到了基于Z2类构造细节组合梁疲劳破坏时的S-N曲线。试验结果与欧洲钢结构协会(ECCS)的规定十分接近,与GB50017—2003《钢结构设计规范》符合得很好,但与现行GB50017—2017《钢结构设计标准》有一定偏差,主要是因为新旧标准对构造细节分类有所不同。采用新标准结果偏于不安全,现阶段在整梁试验数据有限的情况下进行组合梁的设计时,建议按照GB50017—2003中的相关规定进行复核。关键词:构造细节;叠合板组合梁;应力幅;疲劳寿命DOI:10.13204/j.gyjzG22012509ExperimentalResearchonFatigueLifeofCompositeBeamswithLaminatedSlabsandZ2FatigueDetailsYUANXigui1ZHANGKai2(1.SchoolofUrbanConstructionofChengduPolytechnic,Chengdu610218,China;2.ConstructionEngineeringSchoolofSichuanVocationalandTechnicalCollege,Suining629000,China)Abstract:Inordertopopularizetheprefabricationconstructiontechnologyandtheapplicationofsteel-concretecompositebeamsinbridgestructuresandcranebeams,itisnecessarytocarryoutexperimentalresearchonfatiguelifeofcompositebeamswithvariousstructuraldetails.6compositebeams(including5compositebeamswithlaminatedslabsand1compositebeamwithcast-in-placeslabs)weresubjectedtoconstantamplitudefatigueload.Thedoublelogarithmfunctionwasusedtolinearlyfitthetestdataof5compositebeamswithZ2structuraldetails,andtheS-Ncurvewasobtained.ThetestresultswereveryclosetotheprovisionsofEuropeanConventionforConstructionalSteelwork(ECCS)andingoodagreementwithCodeforDesignofSteelStructures(GB50017—2003),buttherewasacertaindeviationfromGB50017—2017,mainlybecausetheirclassificationsofstructuraldetailsweredifferent.TheadoptiontoGB50017—2017wereunsafe.Atthisstage,it...
