*＊至**至＊＊铁路（**段）*＊*＊＊—01 标第＊分部素混凝土钻孔灌注桩施工方案编 写： 复 核： 审 核： 中铁＊局集团有限公司＊＊*铁路＊*段工程指挥部第*分部二〇一六年十月目 录一、编制依据 ................................................................................................................................................. 1 二、编制原则 ................................................................................................................................................. 1 三、设计说明 ................................................................................................................................................. 1 四、施工工期 ................................................................................................................................................. 3 五、施工方案 ................................................................................................................................................. 3 5 。 1 钻孔桩施工工艺流程 .................................................................................................................... 3 5 。 2 施工准备 ........................................................................................................................................ 3 5 。 3 施工放样 ........................................................................................................................................ 3 5 。 4 钻孔平台搭设 ................................................................................................................................ 3 5.5 护筒安装 .......................................................................................................................................... 4 5.9 导管安装 .......................................................................................................................................... 5 5 。 10 清孔 .........................................
