九江文化中心自由曲面钢屋盖结构设计

43520133BuildingStructureVol．43No．5Mar．2013122112100962210096、、。、、、。。TU242.4TU318．2A1002-848X201305-0029-06Structuraldesignonthefree-formsteelroofforJiujiangCulturalCentreHanChongqing1HuangGuixin2ChenHaoman2ZhangChong11Architects＆EngineersCo．Ltd．ofSoutheastUniversityNanjing210096China2CollegeofCivilEngineeringSoutheastUniversityNanjing210096ChinaAbstractTheshapeofsteelroofforJiujiangCulturalCentreislightfree-formsurface．Accordingtothemechanicalcharacteristicsofdifferentpartsthesteelroofadoptsspatiallatticedstructurewhichisconsistedofdouble-layerreticulatedshellspacetubetrussanddendriticsupportsystem．Structurallayoutstaticanalysisdynamiccharacteristicoverallstabilityandmulti-dimensionalandmulti-supportearthquakeexcitationanalysisweremainlyintroduced．Theresultsindicatethatthetubetrussarrangementinkeypositionsenhancesthestructuralrigidityeffectivelythedendriticsupporttogetherwithlarge-spanroofisservedasarchedstressmechanismthesteelroofwhichspansmultiplebuildingsneedsmulti-dimensionalandmulti-supportearthquakeexcitationanalysisout-of-planedeformationoffree-formstructurereducestemperaturestresssignificantly．Keywordsdouble-layerreticulatedshelltubetrussdendriticsupporthybridstructuremulti-dim[e-mail]。137480m2、33117200m2、、。1、、。49kg/m2。-、、。5060.05gⅡ。22.1、、2。53。243m、142m90m16.4m39.84m、20.36m。3201323。、2m2～2.4m。3297728658121×4.0。、、、。。2。、219×6.0。。34。402×20、273×163。800×24。90m、16.4m2m。2。2.2103435．4、、、。2。310、32m90m。5m、16.4m。38kN/m2GRG0.8kN/m2。43。5。3。33.1PKPMMIDAS3D3SANSYSMIDAS5。、、Timoshenko。、、。5MIDAS2kN/mm10kN/mm。3.23.2.1、、、、、1DL0.9kN/m2、0.7kN/m2、0.5kN/m28.0kN/m2。2LL0.5kN/m21.0kN/m2。3SL500.40kN/m21.4。4WL500.35kN/m2－0.5－1.42.0。。5E6Ⅱ。αmaxTg11。6TUTDTUTD25℃。1αmax0.040.120.28Tg/s0.350.350.403.2.2《》GB50068—200121.0。0.850.95。1320133.33.3.11.0DL+1.0LL6194mm62mm90m1/4641/200《》JGJ7—20103。89mm。6/m0.5～0.6。32168MPa、－170MPa1.35DL+0.98LL+1.0TU。3.3.2Ritz4001、110017.34Hz210.86s10.53s3100411.06%XY90%400。12Y。7。3.3.3232。320°2X。3.43、7、。213510.5290.5540.5330.446/s20.5060.4880.4680.34730.4510.4330.4250.31610.42/0.420.00/1.000.99/0.000.00/0.97X/Y20.58/0.180.63/0.000.00/0.970.96/0.0030.08/0.710.37/0.000.01/0.060.04/0.04/°4.44－0.032.49－88.420.18×2.8=0.504m/s20.0353。、ElCentroTaft323435．、、、1∶0.85∶0.6520s0.02s。10020050080010001500m/s60°30°60°90°120°150°68。834121.4132、4245。3.5、9XY2Z。44.12、10391%～35%。4.2“1.0DL+1.0LL”1112。/mm31.0DL+1.0LLEX2+0．85EY槡2+0．65EZ/%/%11.902.81－32.319.089.27－2.04315.8017.21－8.227.567.71－1.9458.679.05－4.287.757.94－2.36723.5627.62－14.7117.7320.14－11.9993.284.19－21.7523.7526.19－9.321112.2115.23－19.8016.5317.14－5.90130.741.14－34.6913.5114.27－5.30154.324.51－4.2114.5314.91－2.56175.746.65－13.6711.7711.92－1.25105ANSYS11.0、Beam18833201311/kN12/kN、Shell43。411.35DL+0.98LL1+0.98LL2+0.98LL321.2DL+1.4LL1+1.4LL2+1.4LL331.2DL+1.4LL1+1.4LL341.2DL+1.4LL2+1.4LL3。DLLL1LL2、LL3。112.13。1L/300L34。12.4623。6、、。、13。71、、13。23。33。4。1GB50011—2010S．2010．2GB50068—2001S．2001．3JGJ7—2010S．2010．4．D．2012．“”《》。1。。2018。43