广大铁路站前一标段人工挖孔桩施工方案1中铁八局集团广大铁路项目部目录1编制依据及原则...........................................................................................................................21.1编制依据...................................................................................................................21.2编制范围...................................................................................................................21.3工程概况....................................................................................................................22人工挖孔桩施工方法及流程.......................................................................................................32.1施工工艺....................................................................................................................32.2施工方法....................................................................................................................4（1）施工准备.................................................................................................................4（2）桩孔开挖.................................................................................................................4（3）出碴.........................................................................................................................6（4）护壁.........................................................................................................................6（5）钢筋骨架.................................................................................................................6（6）灌注混凝土.............................................................................................................7（7）挖孔桩施工质量标准.............................................................................................73桩基施工质量控制措施...............................................................................................................83.1成孔质量控制...........................................................................................................83.2桩基施工质量控制...................................................................................................94质量保证措施...............................................................................................................................94.1质量管理措施............................................................................................................94.2安全管理措施..........................................................................................................135施工环保、水土保持措施.........................................................................................................186夏季、雨季施工的保证措施......................................................................................................216.1夏季施工..................................................................................................................216.2雨季施工..................................................................................................................226.3其他保证措施..........................................................................................................227建立应急预案机制...........................................................
