南京地铁一号线岔路口站主体围护咬合桩施工方案目录一、施工工艺流程......................................................................................................1二施工方法................................................................................................................12.1施工准备及场地平整.............................................................................................12.2测量放线.................................................................................................................12.3导墙施工.................................................................................................................22.3.1总则......................................................................................................................22.3.2测量放线..............................................................................................................22.3.3导墙沟槽开挖......................................................................................................22.3.4钢筋绑扎...............................................................................................................22.3.5模板施工.............................................................................................................22.3.6导墙混凝土浇筑施工..........................................................................................32.3.7混凝土养护...........................................................................................................32.4咬合桩施工.............................................................................................................32.4.1套管检查..............................................................................................................32.4.2咬合桩施工顺序..................................................................................................32.4.3桩机就位...............................................................................................................32.4.4安装套管.............................................................................................................32.4.5咬合桩成孔..........................................................................................................32.4.5.1A桩成孔施工...................................................................................................32.4.5.2B桩成孔施工...................................................................................................42.4.5.3成孔监测...........................................................................................................42.4.6钢筋笼安装及监测..............................................................................................42.4.7混凝土浇筑..........................................................................................................42.4.7.1安装混凝土导管................................................................................................42.4.7.2灌注混凝土........................................................................................................42.4.7.3混凝土的要求...................................................................................................52.4.7.4混凝土的和易性要求.......................................................................................5三施工技术要点...
