第0页共34页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第0页共34页大足区弥陀桥改造工程K0+000.000-K0+067.94钻孔灌注桩施工方案编制人:审核人：编制单位：四川凯天建筑工程有限公司编制日期：2016年02月20日第1页共34页第0页共34页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共34页目录一、工程概述........................................................4二、工程水文、地质及气象条件和施工组织..............................42.1工程地质.....................................................42.2水文条件.....................................................52.3气象特征.....................................................52.4施工组织.....................................................6三、总体施工方案....................................................63.1主要施工方法.................................................63.2施工场地、测量放样及护筒埋设.................................93.2.1场地平台...................................................93.2.2测量放样...................................................93.2.3护筒埋设..................................................103.3泥浆配置及设备..............................................103.3.1泥浆的性能要求............................................113.3.2泥浆性能指标..............................................113.3.3泥浆的制备................................................113.3.4泥浆的循环和净化处理......................................12四、施工工艺控制...................................................134.1钻机安装....................................................134.2钻孔.......................................................144.2.1一般规定..................................................144.2.2旋转钻机成孔..............................................154.2.3冲击钻孔..................................................164.2.4旋挖钻成孔................................................174.2.5岩溶地区钻孔桩施工措施....................................184.2.6钻孔异常处理..............................................194.2.7注意事项..................................................204.3检孔.......................................................204.4清孔.......................................................214.5钢筋笼制作、运输及安装......................................21第2页共34页第1页共34页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共34页4.5.1钢筋笼制造及运输..........................................214.5.2钢筋笼安装................................................224.5.3综合接地设施安装..........................................234.6混凝土浇筑..................................................234.6.1一般规定..................................................234.6.2安装导管..................................................234.6.3二次清孔..................................................234.6.4混凝土配制................................................234.6.5首批封底混凝土............................................244.6.6水下混凝土浇灌............................................254.6.7灌注砼测深方法............................................274.6.8桩基检测..................................................274.6.9凿除桩头..................................................274.6.10泥浆清理.................................................284.6.11桩基施工预防措施...................................
