桩基旋挖钻施工方案

目录

一、编制依据------------------------------------------------------------------------------------------------------------------------- 1

二、编制原则-------------------------------------------------------------------------------------------------------------------------- 1

三、工程概述-------------------------------------------------------------------------------------------------------------------------- 1

四、钻孔灌注桩施工组织机构及职责----------------------------------------------------------------------------------------- 2

五、施工总体目标------------------------------------------------------------------------------------------------------------------- 2

1.工期目标---------------------------------------------------------------------------------------------------------------------- 2

2.质量目标 --------------------------------------------------------------------------------------------------------------------- 2

全部桩基工程争取为Ⅰ类桩。-------------------------------------------------------------------------------------------- 2

3.安全目标 --------------------------------------------------------------------------------------------------------------------- 3

实现“四无”：即无重大人身伤亡事故、无交通行车事故、无重大火灾爆炸事故、无压力容器爆炸事故，确保施工安全。 -------------------------------------------------------------------------------------------------------------- 3

4.环境保护及文明施工目标---------------------------------------------------------------------------------------------- 3

实现“三无”：即无施工污染，无当地村民投诉，无当地有关部门警告。----------------------------------- 3

5.职业健康安全目标--------------------------------------------------------------------------------------------------------- 3

六、旋挖钻施工方案---------------------------------------------------------------------------------------------------------------- 3

1.旋挖钻施工原理及优势-------------------------------------------------------------------------------------------------- 3

2.施工流程-------------------------------------------------------------------------------------------------------------------- 3

3.施工准备-------------------------------------------------------------------------------------------------------------------- 4

4.钻进成孔--------------------------------------------------------------------------------------------------------------------- 6

5.钻孔过程中孔内事故的预防及处理 ----------------------------------------------------------------------------------- 9

6.钢筋笼制作、运输及安装 --------------------------------------------------------------------------------------------- 10

7.导管下放 ------------------------------------------------------------------------------------------------------------------- 14

8.二次清孔------------------------------------------------------------------------------------------------------------------- 15

9.水下混凝土灌注---------------------------------------------------------------------------------------------------------- 15