主 讲曾绍武 陕西铁路工程职施工课件讲解.ppt

LOGO主讲：曾绍武

陕西铁路工程职业技术学院《桥梁施工》精品资源共享课BridgeConstructionqualityresourcesharingclassLecture27oncantileverconstruction(3)Speaker:ZengShaowu,ShaanxiRailwayEngineeringVocationalandTechnicalCollege0号段Section0悬浇段Suspensionsection合拢段Closethesegment悬臂施工边跨现浇段Sideacrossthecast-in-placesection支架法、托架法挂篮施工法Hangingbasketconstructionmethod有支架施工法Thereisabracketconstructionmethod挂篮骑跨HangbasketridecrosscantileverbeintheprocessofconstructionSupportmethod,bracketmethod悬臂浇筑段施工任务Constructiontaskofthecantileverpouringsection

1one挂篮施工工艺流程Constructionprocessofhangingbasket2two3three施工设备选用及注意问题Constructionequipmentselectionandpayattentiontotheproblems施工过程实施方案Constructionprocessimplementationplan任务1：挂篮施工工艺Task1:Constructiontechnologyofhangingbasket子任务1.挂篮施工工艺流程？Sub-task1.Hangingbasketconstructionprocess?解析子任务1：悬臂浇筑段施工工序Parsethesub-task1:theconstructionprocessofthecantileverpouringsection

挂篮试压Hangbaskettestpressure安装挂篮Installthehangingbasket调整模板系统Adjustthetemplatesystem绑扎钢筋预留孔道BreservereinforcementPouringconcrete浇筑混凝土养护拆模Maintenanceandmoldremoval穿束张拉预应力筋Wearthebundleintensionandpulltheprestressedtendons压浆封端Pressureslurrysealingend挂篮移动HangbasketmoveHangbasketmove任务2：预应力钢筋布置方案Task2:Arrangementschemeofprestressedreinforcement子任务1.三向预应力钢筋位置及作用？1.Positionandfunctionofthree-wayprestressedreinforcement?子任务2.预应力定位方法措施？Sub-task2.Prestresspositioningmethodsandmeasures?1.1纵向预应力钢筋位置及作用？1.1Locationandfunctionoflongitudinalprestressedreinforcement?子任务1.1解析：纵向预应力沿着梁体纵向布置，主要抵抗纵向弯矩，钢丝束。Sub-task1.1Analysis:Thelongitudinalprestressisarrangedverticallyalongthebeambody,mainlyresistingthelongitudinalbendingmomentandthesteelwirebeam指出图中竖向形式及作用？子任务1.2竖向预应力钢筋位置及作用？Su