弯曲构件破坏时的名义拉应力分别为63.2MPa、34.5MPa,初裂应力分别为23.2MPa、10.4MPa,UHPC桥面板的抗弯承载能力满足要求,且具有良好的抗裂性能。关键词:斜拉桥;钢-混组合梁;非常高性能混凝土;桥面板;应力;弯曲试验;有限元法中图分类号:U448.27;U443.35文献标志码
:A犛狋狌犱狔狅狀犛狋犪狋犻犮犅犲犺犪狏犻狅狉狅犳犜狑犻狀犐犛狋犲犲犾犝犎犘犆犅狉犻犱犵犲犇犲犮犽犆狅犿狆狅狊犻狋犲犌犻狉犱犲狉狅犳犆犪犫犾犲犛狋犪狔犲犱犅狉犻犱犵犲,犎犈犢犪狅犫犲犻12,犛犎犃犗犡狌犱狅狀犵2,犔犐犝犚狅狀犵1,犔犐犠犲狀狑狌1,犣犎犗犝犡狌犪狀1(1.HunanPr
ovincialCommunicationsPlanning,Survey&DesignInstituteCo.,Ltd.,Changsha410200,China;2.HunanUniversity,Changsha410082,China)犃犫狊狋狉犪犮狋:Inviewoftheshortcom
ingsoftraditionalsteelconcretecompositegirdersofcablestayedbridges,weproposedacompositegirderwhichiscomposedoftwinIsteelandultrahighperformancecon
crete(UHPC)bridgedeck.BasedonMalukouZishuiBridgeinHunanProvince,awholebridgemodelandasegmentmodelofthemaingirderwereestablishedbyusingthefiniteelemen
tsoftwaresuchasMIDASandANSYS.Themechanicalpropertiesofthecompositegirderwereanalyzed,andthebendingtestoftheUHPCbridgedeckmodelwascarriedouttostudythem
echanicalpropertiesoftheUHPCbridgedeck.Theresultsshowthatthemaximumnormalstressesofthemainlongitudinalgirderandthecrossbeamofsteelare223MPaand197MPa,r
espectively,underthecombinationactionofload;themaximumshearstressesare145MPaand65MPa,respectively,whicharelessthanthedesignvaluesofsteelstrength.Then
ominaltensilestressesofthebendingtestcomponentinbridgedirectionandtransversedirectionare63.2MPaand34.5MPa,respectively,andtheinitialcrackstressesare23
.2MPaand10.4MPa,respectively.ThebendingcapacityofUHPCbridgedeckmeetstherequirementsandhasgoodcrackresistance.犓犲狔狑狅狉犱狊:cablestayedbridge;steelconcret
ecompositegirder;ultrahighperformanceconcrete;bridgedeck;stress;bendingtest;finiteelementmethod1 引 言兼具钢主梁跨越能力大和混凝土梁桥面性能好的优钢-混组合梁由钢主梁和混凝土桥面板组成,点[1],是
大跨径斜拉桥(跨度200~1000m)常用的收稿日期:2018-05-28设立资金项目:交通运输部建设科技项目(2014033)ProjectofScienceandTechnologyofMinistryofTransport(2014033)作者简介:贺耀北,高等工程师,Email:heyaobe
i@qq.com。研究方向:大
175-0642-1321
地址 : 山东高新区搅拌机厂家