（雙語）混凝土枕類型 市賽獲獎(jiǎng)

土木工程檢測(cè)技術(shù)專業(yè)教學(xué)資源庫LearningResourcesforSurveyingTechnologyforCivilEngineeringMajorsClassificationofConcreteSleepers（SessionIII）混凝土枕類型（三）1.BroadConcreteSleepers混凝土寬枕2.Bi-blockConcreteSleepers雙塊式軌枕ClassificationofConcreteSleepers混凝土枕類型ClassificationofConcreteSleepers混凝土枕類型Lead-in導(dǎo)入：?jiǎn)栴}：混凝土枕有哪些類型？Q：Whattypesofconcretesleepersarethere?ClassificationofConcreteSleepers混凝土枕類型1.BroadConcreteSleepers混凝土寬枕Reinforcementmodelordinaryreinforcedconcretesleeperspre-stressedreinforcedconcretesleepersordinaryconcretesleepersbroadconcretesleepersbi-blocksleeperscapacitivesleepersconcretebridgesleepersturnoutsleepersClassificationofConcreteSleepers混凝土枕類型1.BroadConcreteSleepers混凝土寬枕Advantages:Withheavyweightandbroadbottom,itcaneffectivelyreduceballaststressanddeformation.優(yōu)點(diǎn)：質(zhì)量大，底面積大，能有效降低道砟應(yīng)力和變形。Disadvantages:

complicatedconstructiontechnologyforsleepergapsealing缺點(diǎn)：縫隙封閉層施工工藝復(fù)雜。Application:Suitableforlargepassengerandfreightstations,longtunnelsandlineswithheavytrafficflow.適用：大型客貨站場(chǎng)、長(zhǎng)大隧道和行車密度大的線路。ClassificationofConcreteSleepers混凝土枕類型1.BroadConcreteSleepers混凝土寬枕ClassificationofConcreteSleepers混凝土枕類型2.Bi-blockConcreteSleepers雙塊式軌枕Advantages:Withsmallvolume,theyareeasytobeintegratedwithconcretetrackbed,toformarigidtrackbed,whichcanevenlybearstresses.Therefore,thegeometryformofthetracklinecanbewellmaintained,andensureasmoothandstablerunning.優(yōu)點(diǎn)：體積小，容易與混凝土道床成為整體，構(gòu)成剛性道床，受力均勻，線路幾何尺寸容易保持，線路平順性、穩(wěn)定性好。ClassificationofConcreteSleepers混凝土枕類型2.Bi-blockConcreteSleepers雙塊式軌枕Disadvantages:Itisdifficulttolocateandcontroltheconstructionprocess.缺點(diǎn)：施工過程定位、控制較難。Application:Suitableforballastlesstrackofhigh-speedrailwayandpassengerdedicatedlines.適用：適合高速鐵路、客運(yùn)專線無砟軌道。ClassificationofConcreteSleepers混凝土枕類型1.BroadConcreteSleepers混凝土寬枕2.Bi-blockConcreteSleepers雙塊式軌枕3.什么是持力層？什么是下臥層？地基是有一定深度和范圍的，當(dāng)?shù)鼗蓛蓪蛹皟蓪右陨贤翆咏M成時(shí)，通常將直接與基礎(chǔ)底面接觸的土層稱為持力層；在地基范圍內(nèi)持力層以下的土層稱為下臥層（當(dāng)下臥