学科分类
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3 个结果
  • 简介:Apracticalmethodforcomputingtheone-wayrectangularorthotropicplate(isotropicplateasaspecialcase)issuggestedinthispaper.Thesupportedcondi-tionsintwooppositeedgesmaybesimplysupported,continuousorsupportednonsymmetricallyandtheothertwooppositeedgesareslide-supportedorfree.Aseriesofsimplifiedformulasaregivenforcalculatingthebendingmomentsalongthecrosssection(loadedsection),inwhichtheactingpointoftheconcentratedloadorthecenterofarec-tangularuniformloadislocated.Thevalidrangeandaccuracyoftheseformulaswerestud-iedandtheapproximateresultswereexaminedandcomparedextensivelywiththosebythetriangularseriessolutionorfiniteelementmethod.

  • 标签: stress analysis BRIDGE structure piers/plate structures
  • 简介:在这份报纸,为一个种指数类型的操作员的中央时刻的明确的估计被导出。估计在学习操作员的这个家庭的明确的近似性质起一个必要作用。用建议方法,在2007的在1987的Ditzian和Totik的结果,郭和Qi,和在2010罐头的Mahmudov分别地被改进。

  • 标签: 指数型算子 矩估计 中央 逼近性质 家族经营 计数
  • 简介:In2010,thefirstoffshorewindturbinewithintegratedinstallationwasestablishedinQidongseaareaofJiangsuProvince,China,whichledtotheimplementationphaseofone-step-installationtechniquebasedonthedesignandconstructionoflarge-scalebucket-top-bearing(LSBTB)bucketfoundation.ThecriticaltechniqueofLSBTBbucketfoundationincludedself-floatingtowing,penetrationwithadjustmentofhorizontallevelness,removabilityandone-step-installation.Theprocessofone-step-installationincludedtheprefabricationofLSBTBbucketfoundationinonshoreconstructionbase,installationanddebuggingofwindpower,overallwatertransportationoffoundationandwindpowersystem,andinstallationoffoundationandoffshorewindturbineontheappointedseaarea.Thecostofone-step-installationtechniquewasabout5000Yuan/kW,whichwas30%-50%lowerthanthatoftheexistingtechnique.TheprefabricationofLSBTBbucketfoundationtookabouttwomonths.Duringtheone-step-installationprocess,theinstallationanddebuggingofwindpowerandoverallwatertransportationneedaboutonetotwodaysinseaareawithin35mdepth.Aftertheproposedtechniqueisindustrialized,thecostwillbefurtherreduced,andtheinstallationcapacityisexpectedtobeupto500windturbinesperyear.

  • 标签: one-step-installation TECHNIQUE LARGE-SCALE bucket-top-bearing BUCKET foundation