资源描述：
《结构设计原理预应力钢筋混凝土t型梁设计(英文)》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、ProjectofPrinciplesofStructuralDesignDesignofthePRCSSB1.Known:SpanofSSB:29m；ComputedspanL=27.66m；Designload：VehicularLoad-Ι；PedestrianLoad=3.0kN/m2；CoefficientofImportanceγ0=1.0；Environment：Bridgelocatesinacommonfield,environmentІ;Relativehumidity(averageofperyear)=75％；Materials：Tendon:lowr
2、elaxationstrands(1×7)；Standardvalueoftensionstrength；designvalueoftensionstrength；nominalarea=140mm2,nominaldiameter15.2mm;Road,Bridge&civilEngineering,Bilingualprogramclass1Page53ProjectofPrinciplesofStructuralDesignelasticmodulus；Strandtaperedofgroupanchors.Nonprestressedreinforcement:HRB
3、400,fsk=400MPa,fsd=330MPa.HRB335：(d<12mm)normalvalueoftensionstrength；designvalueoftensionstrength；Elasticmodulus=2.0×105MPa；Concrete：C50；=3.45×104MPa；normalvalueofcompressstrength＝32.4MPa；designvalueofcompressstrength＝22.4MPa；normalvalueoftensionstrength＝2.65MPa；designvalueoftensionstrengt
4、h＝1.83MPa.Designrequirements：JTGD62-2004,TotalPrestressConcrete.Construction：Post-tension;Pre-castgirder;TDJack;Cast-in-sitewetconnectionjointwithwidthof400mm;Asphaltlayerwith80mmthickness.Road,Bridge&civilEngineering,Bilingualprogramclass1Page53ProjectofPrinciplesofStructuralDesign2.Sizeun
5、it:mm3：Geometricfeaturesofallcross-section1):Calculationofeffectivewidthbf´,obtainingminimumvalueofthefollowingthreeones:(1):Simplesupportedbeamspan’sl/3,l/3=27660/3=9220mm;Road,Bridge&civilEngineering,Bilingualprogramclass1Page53ProjectofPrinciplesofStructuralDesign(1):Averagedistanceofthe
6、twoadjacentbeams,tothemiddlebeamis2200mm;(2):(b+6bh+12hf´),bh=0,wecanlethf́isequivalentwithaverageofwebthicknessaboutmiddlespansection.So,wehaveso(b+6bh+12hf´)=200+6×0+12×228=2936mm;Sobf´=2200mm;2):Calculatinggeometricfeaturesofallcross-section:Generally,geometricfeaturesofmainbeamoftenuseb
7、locknumericalsummationmethod,Areaofallcrosssection:A=AiDistancebetweengravitycenterlineoftheallcrosssectionandthetopofbeam:yu=Aiisareaofblock,isdistancebetweengravitycenterlineoftheallcrosssectionandthetopofbeamTheallcross-sectiongeometricfeaturesofmiddl
