钻孔灌注桩专项施工方案.pdf

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1、广州地铁18号线三工区钻孔桩专项施工方案编制：。审核：。批准：。中国铁建二十二局集团有限公司广州地铁18号线三工区项目部2017年9月目录第一章编制依据及原则..................................................................................................-1-1.1编制依据....................................................-1-1.2编制原则.................

2、...................................-1-第二章工程概述..............................................................................................................-3-2.1.工程概况....................................................-3-2.2.地质概况.....................................

3、...............-3-2.3.水文情况....................................................-3-2.4.气象条件....................................................-4-2.5.钻孔桩工程特点和施工难点....................................-4-第三章钻孔桩施工...........................................................

4、.............................................-5-3.1总体施工方案................................................-5-3.2施工工艺....................................................-5-3.3施工方法....................................................-6-3.3.1施工准备.........................

5、..............................................................................-6-3.3.2测量放线.......................................................................................................-8-3.3.3钢护筒制作及埋设.........................................................

6、..............................-8-3.3.4泥浆制备及其循环系统...............................................................................-9-3.3.5钻机就位.....................................................................................................-10-3.3.6钻进成孔.............

7、........................................................................................-10-3.3.7成孔、成孔检查.........................................................................................-12-3.3.8清孔..............................................................

8、...............................................-13-3.3.9钢筋笼的制作与安装.........................................................................