FRP管混凝土懸?guī)Ч皹蛟囋O計研究

FRP管混凝土懸?guī)Ч皹蛟囋O計研究摘要隨著工業(yè)化和城鎮(zhèn)化的不斷推進，公路和鐵路交通的發(fā)展也越來越受到人們的關注。在橋梁工程設計中，混凝土懸?guī)Ч皹蚴且环N常見的設計方案，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（纖維增強塑料）管進行應用，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計原理和特點，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管具有較好的抗應力裂縫和軸向收縮的性能，可以應用于混凝土懸?guī)Ч皹蛑?。首先，本文通過數(shù)學模型仿真分析了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，本文通過實驗研究確定了FRP管的物理性能和應力應變關系，并設計了混凝土懸?guī)Ч皹虻慕Y構方案。最后，通過ANSYS有限元分析軟件對所設計的混凝土懸?guī)Ч皹蜻M行模擬計算，證明所設計的橋梁結構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計研究，本文得出了以下結論：1.FRP管具有較好的抗應力裂縫和軸向收縮性能，可以應用于混凝土懸?guī)Ч皹蛑?，解決軸向收縮對橋梁承載能力的影響問題。2.設計方案中采用了FRP管懸浮拱，通過數(shù)學模型和實驗研究證明了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計的混凝土懸?guī)Ч皹蜻M行模擬計算，證明所設計的橋梁結構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計提供一種新的解決方案，對橋梁工程領域的發(fā)展具有一定的意義。關鍵詞：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