g-mmp726结构计算书-zy code项目名称迪士尼度假区标识牌

结构StructureCalculation项目名称：迪士尼度假区标识ProjectName:ShanghaiDisneyThemePark设计单位：至形工程Designinstitute:ZhiXingSignageEngineering 号：G-Author:Dai计算日期：2015331Calculationdate:Mar31st本工程铝标识位于迪士度区园区内按构物标设计计算，设计图号为GMM726/0102030405，标识牌由上下独ThesignageisdesignedforShanghaiDisneyResort.Thecalculationisdoneaccordingtostandardstructurecalculation.DrawingnumberisG-MMP713/01-02-03-04-05.Thesignageconsistsofaupperandalowerpiecesthatisseparatedfromeachother.Theoverallstructureofthesignageisshowninthedrawingbelow.上部Upperpieceofthe下部Lowerpieceofthe该标识牌主要由铝板组成，通过螺栓与背面墙体连接Thesignageismainlymadeofaluminumpanelsandisconnectedtothewallthroughthethreadedbolts.一、设计依据和基础参数Designstandardandbasic设计依据Design Loadcodeforthedesignofbuildingstructures《钢结构设计规范 (GB50017-Codefordesignofsteel《铝合金结构设计规范 (GB50429-Codefordesignofaluminumalloy《混凝土结构设计规范 (GB50010-结构材料参数Structurematerial识牌主要材料均为铝材，连接螺栓采用钢材，标号为Q235钢，螺铝板抗拉/压强度设计值f’=90N/mm2铝板抗剪强度设计值f’v=55N/mm2铝板容重g0=27kN/m3钢材抗拉/压强度设计值f=210N/mm2钢材抗剪强度设计值fv=125N/mm2钢材容重g1=78kN/m3混凝土抗压强度设计值fc=14.3N/mm2混凝土抗拉强度设计值ft=1.43N/mm2混凝土容重g2=25kN/m3螺栓抗拉强度设计值ftb=170螺栓抗剪强度设计值fvb=140TheprojectislocatedatShanghaiPuDongdistrict.ThesignageislocatedwithinShanghaiDisneyResort.Thesignageismainlymadeofaluminum.Theconnectingthreadedboltsusedarelevel4.6standardboltsandthethreadedandanchorboltsareallmadeofQ235steel.ThestrengthlevelofthecementisC30.MaterialparametersareshownAluminumpanel pressivestrengthdesignvaluef’=90N/mm2Aluminumpanelshearstrengthdesignvaluef’v=55N/mm2Aluminumpanelvolumetricweightg0=27kN/m3 pressivestrengthdesignvaluef=210N/mm2Steelshearstrengthdesignvaluefv=125N/mm2Steelvolumetricweightg1=78Cementcompressivestrengthdesignvaluefc=14.3N/mm2Cementtensilestrengthdesignvalueft=1.43N/mm2Cementvolumetricweightg2=25kN/m3Threadedbolttensilestrengthdesignvalueftb=170N/mm2Threadedboltshearstrengthdesignvaluefvb=140N/mm2构件几何尺寸和自重Structuredimensionandself-上部标识牌为不规则矩形，轮廓尺寸为1290×780mm，总重量为G=280N。通过螺栓与背面墙体连接，共M5.5连接螺12个。该标识牌紧贴，不考虑风荷载因素，仅计算自重工况。Theupperpieceofthesignageisirregularrectangularshapedwithanoveralldimensionof1290×780mm.ThetotalweightofthesignageisG=280N.Thesignageisconnectedtothebackwallthroughthreadedbolts.Thereareintotal12M5.5bolts.Sincethesignageisimmediayattachedtothewall,windloadisignoredandonlytheself-weightisconsideredinthecalculation.下部标识牌为铝板字母形状，总重量为G=90N。字母的底部通过螺栓与铝底板连接，每个字母连接螺丝的个数为2～3个。该标识Thelowerpieceofthesignageisasetoflettersmadeofaluminumpanels,whichhasatotalweightof90N.Thebottomofthelettersisconnectedtothealuminumbaseplatethroughthreadedbolts.Eachletterhastwotothreebolts.Thispieceofsignageisacantileverstructure,hencethewindloadneedstobeconsidered.二、上部标识牌和背面墙体连接处螺栓Calculationoftheboltsatthejointoftheupperpieceofthesignageandthewall剪切作用，如下图示。Theweightloadoftheupperpieceofthesignageistransferredtothewallthroughconnectingbolts.Theboltsexperienceshearforceasshowninthedrawingbelow.采用M5.5螺丝，每个螺栓的抗剪承载力为Qmax=S*fvb=3.14×标志牌四角和中间共布12个螺丝，因此该螺丝抗剪强度满足要EachM5.5threadedboltshasa umallowedshearforceQmax=S*fvb=3.14×5.52/4×140=3.32kN，whichismuchgreaterthanthetotalself-weightloadofthesignageG=0.28kN.Sincethereareintotal12threadedboltsonthefourcornersandmiddlesectionofthesignage,theshearstrengthoftheboltssatisfiestherequirement.三、下部标识牌风荷载计算Windloadcalculationofthelowerpieceofthesignage风荷载标准值计算Windloadstandard所在地基本风压为w0=0.55kN/m2，考虑到海风影响，地面粗糙度类别为A类（近海海面和海岛、海岸、湖岸及沙漠地区，构筑物5m，查《建筑结构荷载规范》(B50009-2012)，风压高度变化系数μz=1.09，风荷载体型系数μs=1.3，系数βz=1.74按荷载规范公式8.1.1-1，风荷载标准Thebasicwindpressureatthesignagelocationisw0=0.55kN/m2,takingintoconsiderationtheeffectofwindfromoceanandgroundroughnessislevelA(Fornearoceanwatersurface,island,oceanshore,lakeshoreanddesertarea).Sincetheheightforcalculationofthestructuredoesnotexceed5m,accordingto“buildingstructureloadregulation”(GB50009-2012),windpressurevariationcoefficientisμz=1.09,windloadbodycoefficientisμs=1.3,windvibrationcoefficientisβz=1.74.Accordingtotheregulation’sload8.1.1-1,standardwindloadvaluewk=βzμsμzw0=1.74×1.3×1.09×0.55=1.356kN/m2构件几何尺寸Structure最大的“U”为验算对象，迎风面积约为S=0.015m2。Thelowerpieceofthesignageconsistsofindividualletters.Thecalculationisbasedonletter‘U”whichhastheleastnumberofconnectingboltswhilehavingthebiggestarea.ThewindwardsideareaofletterusisapproximayS=0.015m2.Windloadbendingmoment计算简图如下图所示。Thewindloadgeneratesbendingmomentatthebottomofthelowerpieceofthesignagewheretheletterisbolted,asshownintheequivalentforcediagrambelow.风荷载等效集中F=S×wk=0.015×1.356=0.02kN。总的弯矩为M2=F×L=0.02×0.093=0.002kN*m。底部最大剪力Q2=F=0.02kN。WindloadequivalentconcentratedforceF=S×wk=0.015×1.356=0.02kN.TotalbendingmomentisM2=F×L=0.02×0.093=0.002kN*m,andtheumshearforceatthebottomis四、标识牌底部螺栓强度计算Calculationofboltstrengthatthebottomofthesignage风荷载在连接处最大弯矩M2/2=0.001kN*m。风荷载集中力F/2=0.01kNThelowpieceofthesignageisconnectedtothealuminumbaseplatethroughM4threadedbolts.Underthewindload,the umbendingstressandshearstressatthebottomoftheboltsarecalculated. umbendingmomentatthejointcausedbythewindloadisM2/2=0.001kN*m.Theconcentratedwindloadforceis弯矩验算Bendingstress按照《钢结构设计规范》(GB50017-2003)第5.2.1条，考虑双N

Mx

MyWnyAccordingtoCodefordesignofsteelstructures,(GB50017-2003) Mx

M isusedtocalculatethestress.Thecrosssectionthebeamisringshaped.Thecombinedeffectofwindloadandself-weightloadisconsidered.Wnxisthenetsectionmodulusofthebendingplane,Wnx=πD3/32=π×43/32=6.28mm3,γxistheplasticdevelopmentcoefficientwhichisequalto1.15inthiscase.Thebendingstressatthecrosssectionis

Mx

M

138.5N/138.5Nmm2f170Nmm2，Thestructurestrengthcomplieswiththe连接处剪应力验算Calculationofshearstressatthe按照《钢结构设计规范》第4.1.2条，对螺丝底部的剪应力验算公式为

(4.1.2)，考虑全截面均匀受TheshearstressatthebottomofthethreadedboltisaccordingtoCodefordesignofsteelstructures,section4.1.2,

(6.1.2).Assumingtheshearstressisevenlydistributedthecross

0.80N/mm2[

]140N/

，实际剪应力小于容许应力，承载力满足要Theactualshearstressismuchlessthantheallowablevalue,hencethestrengthcomplieswiththerequirement.五、下部标识牌悬臂CalculationofstrengthofthealuminumcantileverbaseplateforthelowerpieceofthesignageAsshowninthedrawingabove,thelowerpieceofthesignageisconnectedtoanaluminumcantileverbaseplate.Windloadistransferredthroughthreadedboltstothealuminumbaseplate.Thestressunderthebendingmomentiscalculated.弯矩应力强度验算Bendingstress按照《铝合金结构设计规范》(GB50429-2007)第6.1.1条，按M6.1.1

W，铝6mm， x y度按字母宽度计算取100mm，其中Wenx为弯矩作用平面的净截面量，Wenx=bh2/6=600mm3，γx为截面塑性发展系数，取1.00。则截面ThestressiscalculatedaccordingtoCodefordesignofaluminum M M yWeny,inwhichWenxisthenetsectionmodulusofbendingplane.Thecrosssectionofthealuminumbaseplatehasathicknessof6mmandthewidthoftheplateisassumedtobethesameastheletter,hence100mm.ThusWenx=bh2/6=600mm3.γxistheplasticdevelopmentcoefficientwhichisequalto1.00inthiscase.ThebendingstressatthecrosssectionisMx0.002

3.33N/mm2[f]90N/W

1.00

材料的的强度设计值，结构有较好的安全储备Muchlessthanthedesignedstrengthofthealuminumalloy,thusthestructurehasalargesafetyfactor.六、构件防腐除锈处理Anti-corrosionandrustremovalof钢结构的构造要求均应符合现行国GB50046GB8932的规定。 andrustproofcoating,surfacetreatmentsandstructureofthesteelworkallcomplywiththecurrentnationalstandardGB50046and为125um，室外为150um。Redleadpaintisusedastherustproofcoatingwithonelayerofbasecoatingandtwolayersofsurfacecoating.Thetotalthicknessoftherustproofcoatingis125umindoorand150umoutdoor.外，均刷底漆二度；漆膜厚度大于等于60μm。构件安装完成后，应时间根据涂层质量和环境条件而定。凡发现涂层表面失去光泽达90％，表面粗糙，风化开裂达25％或漆膜起化开裂达25％或漆膜起Beforesendingoutthestructurefromthefactory,twolayersofbasecoatingwithtotalthicknessequaltoorgreaterthan60umwillbeappliedontotheentirestructureexceptthefrictionsurfaceoftheboltandthe50mmwidestripsalongwieldinglines.Oncethestructureisinsta