井架钢结构在风载工况下的安全性分析-韩东颖

386201312JournalofGuangxiUniversityNatSciEdVol．38No．6Dec．20[e-mail]@ysu．edu．cn。1001-7445201306-1292-08066004ANSYS、、45°、、45°。。。。TU312TU392ASafetyanalysisofderricksteelstructuresinwindloadsHANDong-yingWUWeiCollegeofVehiclesandEnergyYanshanUniversityQinhuangdao066004ChinaAbstractInordertostudythesafetyofderricksteelstructureinwindloadsanumericalmodelwasestablishedbyusingfiniteelementanalysissoftwareANSYS．Thewindloadswererespectivelycalculatedandsafetyevaluationwasanalyzedintheworkingconditionsofequipmentpreservationanddrillinghaltwithleewardlateraland45°winds．Theresultsshowthatthedisplacementandstressbothsatisfythesafetycriterionintheworkingconditionsofequipmentpreservation．Thede-formationatthetopofderricksteelstructureislargerthantheallowablesafedisplacement．Stressa-nalysisshowsthatintheworkingconditionofdrillinghaltwithlateralloadthestressofthecrossbeambetweenthefrontandthebackderrickthighislargerthantheallowablesafestressandthelocatebeamwillbedamaged．Comprehensiveanalysisofdeformationandstressshowthatsectionaldimensionofmemberbarsofderricksteelstructureshouldbeincreasedormaterialshouldbestrengthened．Windloadeffectmustbeconsideredindesignorsafetyevaluationforderricksteelstructureswithdamageanddefacements．Keywordsderricksteelstructureswindloadpreservationoftheworkingconditionsofequip-mentstopdrillingconditionssafetyanalysis、、、1。2、34-56。。67-89-11。206012-1314。1984424448015199067、、216。199282631352123755。2005“”44“”64。2012831“”。。JJ225/42-K。11.1pw=wf1pwNfm2wPa。w=w0k0kgkβ2w0Pak00.3～0.4kgkβ。《》。w015℃10m。w0=12ρv23ρ15℃/m3vm/s。1.2p1=12qnlcotθ4qN/mnlmθθ=86°～88°。1～3fe=n1dlsinθ5n1d。2JJ225/42-K2.1JJ225/42-KANSYS。1JJ225/42-KX3921381JJ225/42-KFig.1ThesketchofJJ225/42-KderricksteelstructureYZ。1JJ225/42-K2。1JJ225/42-KTab.1BasicparametersofJJ225/42-Ktypederricksteelstructure/kg40800/kN2250/m47.12×/m1.8×2.0×/m6.0×2.65×6/m24.525.526.5/m4200、/m·s－136.0、/m·s－147.8/m·s－1≤8.32Tab.2Thematerialandbeamparametersofderricksteelstructure/m2H250×250×9×14116Mn8.998×10－3320×250×9×14216Mn9.628×10－3320×130×9×143Q235A6.268×10－3700×350×24×14416Mn2.592×10－2127×85Q235A2.988×10－3168×86Q235A4.018×10－3350×175×7×11716Mn6.146×10－3250×116×8×138Q235A4.808×10－32L90×56×69Q235A1.680×10－3210×112×9×12.310Q235A4.516×10－3160×126×6.5×1011Q235A4.340×10－3200×100×7×11.412Q235A3.520×10－32.2。23.68m。。。。45°。2.3、、45°、、45°。2.3.1345°4。492163Tab.3Calculationofleewardlateralwindinpreservationoftheworkingconditionsofequipment/Pa572.67529.48919.57786.83616.11527.18/N15017.6915502.4616545.7614834.9111085.669939.39253624302430/N600.71Z430.62Z－689.41X－494.49X－461.9X－331.31X445°Tab.4Calculationof45°winddirectioninpreservationoftheworkingconditionsofequipment/Pa220.44203.86354.07302.93237.22202.96/N5780.995968.616370.725711.454268.383826.67253624302430/N231.24Z165.79Z－265.45X－190.38X－177.85X－127.56X2.3.2JJ225/42-K4200m28m15025625×688°。5、645°7、8。5Tab.5Calculationofleewardwindloadinstopdrillingconditions/N/Pa324.83300.331457.41/N8518.288793.2669919.9325362/N340.73Z244.25Z34959.97Z6Tab.6Calculationoflateralwindloadinstopdrillingconditions/N/Pa521.59446.3349.47299.021457.41/N9385.038414.616287.975637.7946642.98243024302/N－391.04X－280.49X－261X－187.93X－23321.49X745°Tab.7Calculationof45°directionwindloadinstopdrillingconditions/Pa125.04115.63200.83171.83134.56115.12/N3279.073385.53613.583239.632421.102170.55253624302430/N131.16Z94.04Z－150.57X－107.99X－100.88X－72.35X592138845°Tab.8Calculationofrootedwindloadof45°directioninstopdrillingconditions/Pa790.82790.82/N63232.8615185.5622/N31616.43Z－7592.78X3JJ225/42-K、。、。h/50094.24mm。《》A3215MPa16Mn315MPa。SY/T6326－2008、。3.13.1.135.10mm。。3.1.29。935.30MPa。2Fig.2Theoveralldisplacementoutputofderricksteelstructurewithlateralwindloadinpreservationoftheworkingconditionsofequipment3.23.2.1289.70mm。。3.2.210。1089.84MPa。9Tab.9Stressanalysisofderricksteelstructurewithleewardwindloadinpreservationoftheworkingconditionsofequipment/MPa56119.121235.3038710.23206912.316921610Tab.10Stressanalysisofderricksteelstructurewithlateralwindloadinpreservationoftheworkingconditionsofequipment/MPa32145.9018271.7729435.94114889.843.345°3.3.145°41.96mm。。3.3.211。1139.55MPa。3.43.4.13139.3mm。94.24mm。3.4.212。139.66MPa。3Fig.3Theoveralldisplacementoutputofderricksteelstructurewithleewardwindloadinstopdrillingconditions1145°Tab.11Stressanalysisofderricksteelstructurewith45°directionwindloadinpreservationoftheworkingconditionsofequipment/MPa32122.5818239.55114835.1712Tab.12Stressanalysisofderricksteelstructurewithleewardwindloadinstopdrillingconditions/MPa55190.46182139.66206957.473.53.5.14113.11mm。79213894.24mm。3.5.213。138Q235A114231.17MPa。。816Mn8。3.645°3.6.145°5130.35mm。94.24mm。3.6.214。14148.38MPa。4Fig.4Theoveralldisplacementoutputofderricksteelstructurewithlateralwindloadinstopdrillingconditions545°Fig.5Theoveralldisplacementoutputofderricksteelstructurewith45°directionwindloadinstopdrillingconditions13Tab.13Stressanalysisofderricksteelstructurewithlateralwindloadinstopdrillingconditions/MPa32160.59182108.87115794.4