带刚性环耳座的计算

计算依据：HG20582-1998、JB/T4712.3-2007。ThiscalculationispreparedreferringtoHG20582-1998andJB/T4712.3-2007.1.设计条件DesignCondition圆筒壳体的名义厚度Nominalthicknessofshellδ=12mm垫板的名义厚度Nominalthicknessofpadδ1=12mm圆筒壳体壁厚扣除壁厚附加量后的厚度Efectivethicknessofshellδ0=9.4mm垫板壁厚扣除壁厚附加量后的厚度Effectivethicknessofpadδ01=9.4mm筋板的厚度扣除壁厚附加量后的厚度Effectivethicknessofgussetδ4=15.7mm刚性环的有效厚度EffectivethicknessofringsT=27.7mm刚性环的宽度WidthofringsB=185mm圆筒壳体外径OutsidediameterofshellD0=8024mm垫板的外径OutsidediameterofpadD01=8048mm地震影响系数Seismiccoefficientα=0.1基本风压Basicwindpressureqo=500PaB保温厚度Thicknessofinsulationtk=80mm筒体有效当量直径EquivalentdiameterofshellDe=8184mm设备高度HeightofequipmentH=19000mmh1=7200mm设备质心离地面高度HeightfromgroundtocentroidofequipmentZ=22500mm耳式支座数目Numberoflugsupportsn=28耳式支座的高度Heightoflugsupportsh=2400mm带刚性环耳座的计算Doc:--revCalculationofSupportLugswithRings地面粗糙度类别Groundroughnesscategory(输入A、B、C或D)耳座底板下表面到设备重心的距离Distancefrombottomoflowerringtocentroidofequipment设备操作质量Operatingmassofequipmentmo=1000000kg地脚螺栓中心圆直径AnchorboltcirclediameterDb=8200mmb=88mm筋板材料的许用应力Allowablestressofgussetmaterial[σr]=189MPa刚性环材料的许用应力Allowablestressofringmaterial[σ]=189Mpa2.载荷计算LoadCalculation风压高度变化系数fWindpressurecoefficientfAf=0.794Z0.24(Z≤5m时，f=1.17)Bf=0.479Z0.32(Z≤10m时，f=1.00)1.30Cf=0.2244Z0.44(Z≤15m时，f=0.74)Df=0.0798Z0.60(Z≤30m时，f=0.62)Pe=α×mo×g980000NFw=1.2×f×qo×H×De×10-6121033.17NFh=max(Pe,Fw，Pe+0.25Fw)1010258.3NM=Fh×h1=7.274E+09M.mm476722.29N17479.817Nθ＝π/n0.11弧度rad3.惯性矩、形心计算CalculationofMomentofInertiaandCentroid302.10mm302.55mm10808.24mm2153.74mmDs＝Do+2×（δ1+B-a）8110.52mmRs＝0.5×Ds4055.26mma1=a-0.5×B61.24mma2=B＋0.5×δ1-a37.26mma3=B+δ1+0.5×δ-a49.26mm3.38E+07mm4地面粗糙度类别Groundroughnesscategory组合截面的面积Areaofcompositecrosssection刚性环外缘至惯性轴的距离Distancefromouterperipherencetoinertiaaxis作用于设备耳座上的弯矩Overturningmomentactingonlug支座处反力Reactionforceatlugsupport支座处作用于刚性环上的力Radialforceonrings耳座间夹角的一半Halfofincludedangleofadjacenttwosupports圆筒体上有效加强宽度Effectivewidthofshell垫板圆筒上有效加强宽度Effectivewidthofcylindricalpad反力Fb至壳体外壁的距离DistancefromreactionforceFbtooutersurfaceofshell水平地震力Horizontalseismicload水平风载荷Horizontalwindload作用于设备的水平力HorizontalloadactingonthevesselnnDMFbbgm4ohbFFb01.1OsDL0111.1OsiDLssiLLTBA001ssissiLLTBBLBLBTBa1111)5.0()5.0(5.02131121aTBTBI3.97E+06mm46.91E+06mm4I=I1+I2+I34.47E+07mm44.应力校核Checkofstresses筋板应力Stressingussets82.07MPa筋板应力校核checkstabilityofgussetsσr≤[σr]Soit'sOK支座处和两支座中间处刚性环组合截面上的应力校核Checkofstressinrings-1.33E+06N·mm77568.84N11.74MPaσ1≤[σ]Soit'sOK6.64E+05N·mm78059.66N9.50MPaσ2≤[σ]Soit'sOK内力矩Internalmoment周向力Circumferentialforce应力Stress支座处Atlugsupport两支座中间处Atmiddleoftwosupports组合截面的惯性矩Momentofinertiaofcompositecrosssection内力矩Internalmoment周向力Circumferentialforce应力Stress22103102121aLLIsisi230303121aLLIss)1(5.01ctgFRMsrctgFTr5.01ATIaMrr111)1sin1(5.02FRsMrsin15.02FTr4br2BFATIaMrr222