长沙南站钢屋盖结构设计与分析

41720117BuildingStructureVol．41No．7Jul．2011430071AB3.6m。。SAP2000。、、、、、。TU393A1002-848X201107-0019-05StructuraldesignandanalysisofacomplexspatialgridstructureforSouthChangshaRailwayStationQianYiLiTingZhouDeliangChenXingYuanBofengCentral-SouthArchitecturalDesignInstituteCo．Ltd．Wuhan430071ChinaAbstractSouthChangshaRailwayStationisalargehubstationontheWuhan-GuangzhouPassenger’sExpressRailway．Thelong-spansteelroofinsectionsAandBisanextremelycomplexspatialgridstructureandthelocalskylightroofstructureisanbeamstringstructure．Thegridthicknessis3.6m．Latticedshellbearingshavebeendesignedasamulti-pointsupportsystemwhichincludessteelpipecolumnsandmulti-stagebranchingtreecolumns．Inordertomeettherequirementofthebuildingarchitecturalstyleandthejointcarryingcapacitythecaststeelnodeswereusedandaparticularjointtestandfiniteelementanalysishadbeenconductedforthenodes．Throughwindtunneltestsandwind-inducedvibrationanalysisthewindproblemwassolved．ThedistributionofwindloadsfortheroofofSouthChangshaRailwayStationwassummarized．TheschemeofinstallingroofstructureisanimprovedversionoftheliftingblockconstructionmethodwhichwasanalyzedbyusingSAP2000tosimulatethewholeprocessofconstructionandtheresultsofconsideringpost-constructionsimulationornotwerecompared．Thestructuralshapelayoutmodelingnodedesignwindcalculationconstructionsimulationandstructuralanalysisofthecomplexspatiallatticedshellwerepresentedindetail．Keywordsgridstructurelatticedshellcaststeelnodeswindtunnelwind-inducedvibrationc[e-mail]。11112ABC2。12AB2+3。20113349m4312181m59458m2。49397.7m26278.6m2。。113m81m21m3.6m。1168mm4Q235B1219mmQ345GJ-C。5C5“”。4113m。61117mm78。Q345GJ-C9。①②4③④10。、GS20Mn5202417．67891091112。。。1113MX154MPa。23。5。《》GB50009—20011213/GPa、、、、。1∶2501424。、、。140.6mDANTECDISA-552。ScanivalveDSM3200。3。13.1s313Hz8.1m/s。0°～360°15°24。、、。122011。。。1001.227kPa－2.795kPaA1.037kPa－0.837kPaB1.504kPa－1.279kPa。1001.489kPa－2.493kPaA0.766kPa－0.575kPaB1.223kPa－0.661kPa。。。。。13。10.928Hz20.955Hz132.407Hz。。。、。。。。ZZXY。1.23～2.00。100248MPa1001/145.9。。156、、、。SAP2000。。1141516。7173。22417．。BLOCK4BLOCK1BLOCK5BLOCK2BLOCK6BLOCK3BLOCK7BLOCK4。、。。16177SAP200018。MST。18。。300～800mm30mm。。。1230°。。。。11.34sX21.22sY31.16s。207mm81m1/39184mm1/250＜1/200。22m。42.8kg/m27.7kg/m22.94kg/m253.44kg/m2。84932417．2/kN/kN/%/kN/kN/%1156149.58－4.111174172.72－0.72197196.10－0.512145141.79－2.23123128.994.913237227.75－3.94134135.841.414136142.755.05136142.865.015100100.160.26267247.83－7.216118117.67－0.37195193.60－0.7178479.06－5.98115119.964.3187570.03－6.69152149.65－1.5199793.15－4.010267252.88－5.3209288.51－3.82。±8%。3.4650650MPa。、40CrQ345GJC。、。。9。105。4。70.4kg/m294.4kg/m2。。、、。1．J．201141731-39.2．R．2009．3．R．2009．4．M.．2007．5．M．2．2005．23、。。。。1．J．201141712-18．2DIN17182S．3CECS2352008S．2008．440.145m/s2ATCDesignGuide。。1．J．201141731-39．2．J．200838172-76．3．M．2005．4WILSONEL．Three-dimensionalstaticanddynamic-analysisofstructuresM．BerkeleyCAUSAComputersandStructuresInc．2002．94