资源描述:
《大直径圆筒仓的温度效应分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、华北水利水电大学硕士学位论文II万方数据ABSTRACTRESEARCHONTHEEFFECTOFTEMPERATUREONLARGE-DIAMETERSILOSABSTRACTTemperatureisoneofthekeyeffectofthereinforcedconcretesilo,theeffectwillbeevenmoresignificant,especiallywiththeincreaseofsilodiameter.Butthecurrentregulationsaboutthetemperaturecalc
2、ulationofthesiloeffectistoosimplifiedanduncertainty,andlacktheoreticalandpracticalbasis.Forthisreason,thispapercombineswithalargediameterreinforcedconcretecylindersiloprojecttocarryoutthestudyoflawoftemperatureeffect.ThisarticleselectsthefiniteelementsoftwareABAQUSinsi
3、losof3-dnumericalsimulation,calculatingandanalyzingthesilowhentemperaturedrops20℃andrises20℃basedonthemeasureddata,researchidentifiesthesilointhestressdistributionunderdifferentworkingconditions.Theresultsshowthat:undertheconditionsoftemperaturedroppingandrising,theeff
4、ectoftemperatureonradialstressandverticalstressofconcretesiloisrelativelysmall,theinfluenceofsilomainlyshowshoopstress.Amongthem,theinfluenceoftemperaturedroppingonhoopstressofthewallisveryoutstanding,thevastareainsideandoutsidethewallisinastateofhooptension,showingthe
5、largehooptensilestress,themaximumcanreach2.917MPa.Comprehensivecomparisonoftwokindsofworkingconditionoftheimpactofsilo,hooptensilestressofpartofthestructureexceeddesignvalueoftensilestrengthofconcreteundertheconditionoftemperaturedropping,thisadverseeffectwilldirectlyr
6、esultinthecrackofthesilo,whichmayaffectthenormaluseofstructure,sothat,comparedwithtemperaturerising,theeffectoftemperaturedroppingonsilostructureismoreadverse.Basedonthelinearelasticanalysisofthemainconcretemembersofthelarge-diametersilo,thispapergetstheregularityofsil
7、oundertheeffectoftemperature,whichhopestoprovidesomereferencedopinionsfortheaspectofdesign,constructionandresearchinthefuture.KEYWORDS:Large-diametersilo;Effectoftemperature;Thefiniteelementanalysis;StressIII万方数据华北水利水电大学硕士学位论文IV万方数据目录目录摘要...............................
8、............................................................................................................IABSTRACT