钻孔灌注桩施工工艺和操作要点.pdfVIP

目录

一．编制依据·······················································1

二．工程概况·······················································1

三．施工准备·······················································2

四．施工工艺·······················································4

（一）CFG灌注桩施工工艺·········································5

（二）混凝土灌注桩施工工艺·······································8

五．施工质量保证措施···············································11

六．工期计划及保证措施············································13

七．工程验收与交工·················································14

八．保修服务措施···················································15

九．安全生产保证措施···············································15

十．文明施工与环境保护措施·········································17

附件一、施工组织机构图·········································18

附件二、项目班子配备情况·····································19

附件三、劳动力计划表···········································20

附件四、拟投入的主要施工机械设备表·····························21

附件五、质量管理体系图·········································22

附件六、技术管理体系图·········································23

附件七、安全管理体系图·········································24

一、编制依据

1.1甲方提供资料

《工程桩基招标文件》

1.2规程、规范类

※《建筑桩基技术规范》（JGJ94-94）

※《建筑地基处理技术规范》（JGJ79-2002）

※《建筑地基基础工程施工质量验收规范》（GB50202-2002）

※《建筑工程施工测量规范》（DBJ01-21-95）

※《建筑机械使用安全技术规程》（JGJ33-96）

※《施工现场临时用电技术规范》（JGJ46-88）

※《混凝土结构设计规范》（GBJ10-89）

※《建筑地基基础设计规范》（GB50007-2002）

※《普通混凝土配合比设计规程》（JGJ55-2000）

※《桩基低应变动力检测规程》JGJ/T93-95

※《长螺旋钻孔泵压混凝土桩复合地基技术规程》DB13（J）31-2001

※《建筑基桩检测技术规范》JGJ106-2003

二、工程概况

2.1基本情况

⑴工程名称：

⑵建设单位：

2.2工程概况

。

本工程内容如下：

1.采用CFG桩处理的建、构筑物如下：基底埋深标高-2.0~-3.0，桩径为φ

400，桩长为基底标高以下~12，总数量~8327根；

2．采用钢筋混凝土灌柱桩的建、构筑物如下：外管架（一桩一柱）和事故

水池（抗浮桩）。灌注桩采用φ600桩径、桩长9米，总数~412根；

3．CFG桩的试桩要求：CFG桩以第⑤层细砂层作为桩端持力层，要求桩体试

块抗压强度平均值fcu≥10.1Mpa（建议采用C20砼），要求单桩承载力特征值Ra

≥400KN，布置桩间距s=1.4米、1.2米两种，在基础底面与复合地基之间设置3