FRP管混凝土懸?guī)Ч皹蛟囋O(shè)計(jì)研究

FRP管混凝土懸?guī)Ч皹蛟囋O(shè)計(jì)研究摘要隨著工業(yè)化和城鎮(zhèn)化的不斷推進(jìn)，公路和鐵路交通的發(fā)展也越來越受到人們的關(guān)注。在橋梁工程設(shè)計(jì)中，混凝土懸?guī)Ч皹蚴且环N常見的設(shè)計(jì)方案，但是在長期使用過程中存在軸向收縮影響橋梁的承載能力等問題。因此，本文通過對FRP（纖維增強(qiáng)塑料）管進(jìn)行應(yīng)用，解決了混凝土懸?guī)Ч皹虼嬖诘膯栴}。文章介紹了混凝土懸?guī)Ч皹虻脑O(shè)計(jì)原理和特點(diǎn)，并分析了軸向收縮對橋梁承載能力的影響。通過對FRP管的研究，發(fā)現(xiàn)FRP管具有較好的抗應(yīng)力裂縫和軸向收縮的性能，可以應(yīng)用于混凝土懸?guī)Ч皹蛑?。首先，本文通過數(shù)學(xué)模型仿真分析了FRP管懸浮拱橋的靜力特性，證明了FRP管的具有優(yōu)越的抗彎剛度和抗彎扭剛度。其次，本文通過實(shí)驗(yàn)研究確定了FRP管的物理性能和應(yīng)力應(yīng)變關(guān)系，并設(shè)計(jì)了混凝土懸?guī)Ч皹虻慕Y(jié)構(gòu)方案。最后，通過ANSYS有限元分析軟件對所設(shè)計(jì)的混凝土懸?guī)Ч皹蜻M(jìn)行模擬計(jì)算，證明所設(shè)計(jì)的橋梁結(jié)構(gòu)方案具有良好的抗荷能力和安全性能。通過對FRP管混凝土懸?guī)Ч皹虻脑O(shè)計(jì)研究，本文得出了以下結(jié)論：1.FRP管具有較好的抗應(yīng)力裂縫和軸向收縮性能，可以應(yīng)用于混凝土懸?guī)Ч皹蛑?，解決軸向收縮對橋梁承載能力的影響問題。2.設(shè)計(jì)方案中采用了FRP管懸浮拱，通過數(shù)學(xué)模型和實(shí)驗(yàn)研究證明了FRP管具有良好的抗彎剛度和抗彎扭剛度。3.通過ANSYS有限元分析軟件對所設(shè)計(jì)的混凝土懸?guī)Ч皹蜻M(jìn)行模擬計(jì)算，證明所設(shè)計(jì)的橋梁結(jié)構(gòu)方案具有良好的抗荷能力和安全性能。4.本文的研究成果可以為混凝土懸?guī)Ч皹虻脑O(shè)計(jì)提供一種新的解決方案，對橋梁工程領(lǐng)域的發(fā)展具有一定的意義。關(guān)鍵詞：混凝土懸?guī)Ч皹颍籉RP管；抗彎剛度；ANSYS仿真分析AbstractWiththecontinuousprogressofindustrializationandurbanization,thedevelopmentofhighwayandrailwaytransportationhasattractedmoreandmoreattention.Inthedesignofbridgeengineering,theconcretesuspensionarchbridgeisacommondesignscheme.However,duringlong-termuse,theaxialshrinkageaffectsthebearingcapacityofthebridge.Therefore,thispapersolvestheproblemsofconcretesuspensionarchbridgesbyusingFRP(fiber-reinforcedplastics)pipes.Thispaperintroducesthedesignprinciplesandcharacteristicsofconcretesuspensionarchbridges,andanalyzestheimpactofaxialshrinkageonthebearingcapacityofbridges.ThroughresearchonFRPpipes,itisfoundthatFRPpipeshavegoodanti-stresscrackingandaxialshrinkageperformance,whichcanbeusedinconcretesuspensionarchbridges.Firstly,thispaperanalyzesthestaticcharacteristicsofFRPpipesuspensionbridgesthroughmathematicalmodels,demonstratingthatFRPhassuperiorbendingstiffnessandtorsionalstiffness.Secondly,thispaperdeterminesthephysicalpropertiesandstress-strainrelationshipofFRPpipesthroughexperimentalresearch,anddesignsthestructuralschemeofconcretesuspensionarchbridges.Finally,theANSYSfiniteelementanalysissoftwareisusedtosimulateandcalculatethedesignedconcretesuspensionarchbridge,provingthatthedesignedbridgestructurehasgoodload-bearingcapacityandsafetyperformance.ThroughthedesignresearchofFRPpipeconcretesuspensionarchbridges,thispaperconcludesthat:1.FRPpipeshavegoodanti-stresscrackingandaxialshrinkageproperties,whichcanbeusedinconcretesuspensionarchbridgestosolvetheproblemofaxialshrinkageaffectingthebearingcapacityofbridges.2.ThedesignschemeadoptsanFRPpipesuspensionarch,andthroughmathematicalmodelsandexperimentalresearch,itisprovedthatFRPpipeshavegoodbendingstiffnessandtorsionalstiffness.3.ThroughANSYSfiniteelementanalysissoftware,thedesignedconcretesuspensionarchbridgehasgoodload-bearingcapacityandsafetyperformance.4.Theresearchresultsofthispapercanprovideanewsolutionforthedesignofconcretesuspensionarchbridgesandhaveacertai