简介:摘要运营阶段轨道梁在恒载、列车荷载、列车横向摇摆力、离心力、风力等作用下会产生水平横向位移。而规范中对于轨道梁的横桥向挠度尚未作出具体规定。若横向挠度过大,将对列车行驶产生不利影响。跨座式单轨简支梁由于对路线的适应性强,因此常出现小半径轨道梁。而曲线梁在结构受力上具有弯扭耦合的特殊性,因此其受力特性应予以重视。本文以深圳某云轨(跨座式单轨)简支梁为研究对象,采用有限元软件Midas/Civil建立有限元计算模型,对轨道梁横向位移进行了简要分析。
简介:ABanachspaceoperatorsatisfiesgeneralizedRakoevi'sproperty(gw)ifthecomplementofitsuppersemiB-WeylspectruminitsapproximatepointspectrumisthesetofeigenvaluesofTwhichareisolatedinthespectrumofT.Inthisnote,wecharacterizehypecyclicandsupercyclicoperatorssatisfyingtheproperty(gw).
简介:NationalismthreatenstoimbuemodernJapanwitharationaleforincreasedmilitarism.Post-warnationalismwasareasonJapanhadlaunchedwarabroad,butthereinvigorationofJapanesenationalismisburgeoningundertwo-termPrimeMinisterShinzoAbe.Hissenseofnationalism,whichhasdomesticandinternationalrepercussions,hasdevelopedundertheinfluenceofhisfamilypoliticalgenes.Abe'snationalismisbeingcarriedoutininternalandexternalpolicies,withincreasinglynegativeimpactondomesticandregionalorder.Theinternationalcommunityshouldremainvigilantofhisright-wingpolitics.
简介:Theinternationalorderisbuiltontheprinciplesofsovereignequality,nationalinterests,greatpowersandrespectforhumanrightsamongothers.Internationalrivalryandcooperationhaveexistedsidebysideoverthepastfewcenturies,whilethefoundationsofaninternationalorderhavesolidified.Wearenowseeingatransitionintheinternationalorderthatrequiresnewinnovativewaysofthinking.Chinaisseenasthekeydriverofthesechangesbecauseofitsuniquestatus,patternofgrowthandfuturepotential.Chinashouldembracethishistoricopportunityandtakeonitsobligationstocontributetothebirthofanewmoderninternationalorder.
简介:1920sAmericaembracedanageofprosperityandliberation.Economysoaredthatraisedpeople'slivingstandard.Peoplelearnprogressiveideas,andsocietybecomemoredemocratic.
简介:Anewsituationhasemergedasaresultofglobalclimatechangefollowingthe'ParisAgreement',whichgivesrisetonewopportunitiesforcarbonmarket.Carbonmarketasamechanismtopromotelow-carbondevelopmenthasbeenexploredbothintheoreticalresearchandpracticalapplicationhomeandabroadforseveralyears.However,therearestillmanyproblemstosettle,suchasthepotentialuncertaintytodetermineanddistributetotalcarbonemissions,pricedistortionsinhigh-carbonproductsandservicesinthemarket,mainbodiesresponsibleforthecarbonemissioninurbaninfrastructure,etc.Allthesehaveformedaconstraintonthefurtherdevelopmentofcarbonmarket.Throughthehistoricalanalysisoftheactualdevelopmentofthecarbonmarket,thispapertriestoidentifypracticalproblemswhichshouldbesolvedurgently,andprovidesideasforChinatoestablishaunifiednationalcarbonmarketin2017,whichisnotonlythenationalmeasurestoparticipateinthe'ParisAgreement'actively,butalsotheimplementationofChina’ssustainabledevelopmentstrategy.