大跨度梁结构设计方案比选

:100926825(2007)2520107202:2007204203:(19732),,,,200092:,,,:,,:TU318:A125.8m,6.4m,8.6m6m,,:C40,fc=19.1N/mm2,fck=26.8N/mm2,ftk=2.39N/mm2,Ec=3.25104N/mm2;Q345B,fy=fy=295N/mm2,fv=170N/mm2,Es=2.06105N/mm2;fptk=1860N/mm22,12m20m,,1)MA=-1772kNm,ME=3844kNm,ck-pcftk;cq-pc0L/4002),p=(-8Npe)/L2([5])3)11(BH)mm/%50018003415.21225()203,,,,,1)MA=-1331kNm,ME=2703kNm,0.3mmL/4002),bcebeq,beq=bce/E;beq=bce/2E,beq;bce;EEsEc,E=Es/Ec(6.0):Wcra=2.7s(2.7c+0.1dce)Est([6])3)22HBtwt/mm/mm/mm/(1980)140045025300.02553324:1),,,;2),,;3),,;4),,,,,1)MA=-1331kNm,ME=2703kNm,0.3mmL/4002),,,,5%3)33HBtwt/mm/(1980)105040020302815.23325(4)4/m3/kg/t/kg/21.285213410824.812.99.09.38917.0:1);2)5%;3)93,701332520079SHANXIARCHITECTUREVol.33No.25Sep.2007:100926825(2007)2520108202:2007205210:(19782),,,,541001:,,,:,,:TU378.2:A1JGJ149220063.3.1,,,,JGJ3220024.5.54.8.5,33,JGJ3220024.8.24.8.3,50%,,,,,GB50011220013.4.32JGJ149220063.13.2,,,,,,,TtT10.9,0.853,,,,,,,,;;,,,,0.600.85,6,,;,,:[1]GB5001022002,[S].[2]GB5001722003,[S].[3]JGJ13822001,[S].[4]YB9082297,[S].[5].[M].:,2003.[6]JGJ99298,[S].StructuraldesignformselectionoflongspanbeamZHULi2liAbstract:Tooptimizethestructuralschemeoflong2spanbeamsinareportinghall,threebeamtypes,suchasprestressedconcretebeams,steel2concretecompositebeamsandprestressedsteel2concretecompositebeams,arepresented.Technicallyandeconomicallyanalysisisinvestigatedforthethreebeamtypes.Theresultsmayserveasareferenceforsimilarprojects.Keywords:long2span,prestressing,steel2concretecompositebeams801332520079SHANXIARCHITECTUREVol.33No.25Sep.2007