文档介绍：轨道交通六号线二期工程龙凤溪车场建设工程
旋挖灌注桩质量控制专项方案
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审核:
编制:
中冶建工集团交通公司基础分公司
编制时间:2012年4月
目录
一、前言.........................................3
概述.........................................3
........................................................3
工程概况.......................................................3
地质结构.......................................................4
不良地质现象…………………………………………………..……………….6
..........................................................6
三、桩基施工质量控制方案..........................6
1、施工工艺........................................................6
2、组织保证体系....................................................7
质量保证组织机构...............................................7
管理措施.......................................................8
3、质量控制点......................................................9
4、质量控制方法...................................................10
...............................................10
.....................................................10
开孔........................................................10
孔口浮土....................................................10
桩径....................................................................................................................11
桩孔垂直度........................................................................................................11
孔深.........................................................11
孔底成渣..........................................................................................................11
下放钢筋笼控制方法.........................................................................................11
钢筋笼尺寸复核..............................................................................................11
合理选择吊点,控制钢筋笼吊起后的竖直度......................12
钢筋笼下放过程控制.........................................12
钢筋笼定位..................................................12
浇筑混凝土