鐵路32m RPC低高度T梁可靠性研究.pdf

1、北京交通大學碩士學位論文鐵路32mRPC低高度T梁可靠性研究姓名：汪文秋申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：鐘鐵毅20090701ABSl：’RACTR繃iVepowderconcrete(RPC)isoneofnewcompositematerialComparingwithcommonconcreteRPCpossessesapparentmeritssuchasultrahighstrength，hightoughne

2、ss，andhighdurabilityetcAsaresult，duringthetimeoftheconstructionofpassengertransportationspeciallineandhighspeedrailwayitwillmakethestructurebetightandlowusingRPCinsteadofcommonconcretetocarryoutstructuraldesignTomakeRPCb

3、ebetterapplicationinengineeringpracticeitwillmaketheRPClowheightgirderinrailwaybridgebeobjectofstudyinthispaperUsingtheANSYStobuildasolidmoldandstaticcalculationmeanwhilemakingtherandomvariableschangebetweenminus10％andpl

4、us10％，tocalculatethesensitivityofwhichtothestressofuplimbofmidspanandthedeflectionofmidspanandtoSCleenwhichrandomvariableisinsensitiveinordertoreducethecalculatedamountofreliabiltyanaliysisandcomparewiththeconcisionresul

5、tsOnthebasisofmakingSUreofthemajorfactorswhichinfluencethereilabilityofgirderinrailwaybridge，combiningnumericalsimulationwithfiniteelementmethodtocalculatethereliabilityofRPCgirderThus，thereistheresultsoffailureprobabili

6、tyandreliabilityparameter：throughdirectsamplingmethod，thereliabilityparameteroffl氌ctureis38，thereliabilityparameterofdeflectiondistortionis41；throughlatinhypercubicsamplingmethod，thereliabilityparameteroffractureis38，the

7、reliabilityparameterofdeflectiondistortionis42Comparingwiththereliabilityparameterofcommonconcret，theresultsissmallerbutclosewhichfitsthebillofrailwaybridgeandfarmorebiggerthanthatofbuildingengineeringItdemonstratesthatt

8、heRPCgirdertobeappliedinrailwaybridgefitsthebillogreliabilityOtherwise，itdepictstheinfluencementoftherandomvariablesandconstructionprecisiontothereliabilityoftheRPCgirderthroughusingthetheoryofcorrelationtoanalysisthesen