（1同济大学，上海 200092；2 上海城兴市政工程设计有限公司，上海 200235）

 [摘要]  本文介绍了钻孔灌注桩桩侧与桩底复合后注浆机理及注浆装置设计，并制定了操作流程与注意事项，最后通过对试验桩基数据的分析，给出了适合本工程的承载力提高系数，为类似工程的设计施工提供一定的参考。

[关键词]  后注浆；灌注桩；承载力

中图分类号：              文献标识码：         文章编号：14S1199

作者简介：郭旸，学士，工程师，Email：hmilye@gmail.com。

Application research of pile post-grunting technology for city elevated road

Guo Yang^1,2

(1 Tongji University, Shanghai 200092, China; 2 Shanghai Chengxing Urban Engineeringdesign Co.,Ltd., Shanghai 200235, China)

Abstract: This article describes the mechanism of post-grouting combination as well as the design of grouting device for pile’s side and bottom. Besides, the article also introduces the handling process and operation guidelines for the technology. Finally, according to the testing data analysis of the bearing capacity experiment, we could provide the addtional coefficient of bearing capacity that is suitable for this project. Meanwhile, it is also a significant milestone of offering the valuable reference to the similar projects in the future.

Keywords: post-grouting; slurry drilled pile; bearing capacity

参 考 文 献

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[2]JTG/T F50—2011 公路桥涵施工技术规范[S].北京：人民交通出版社, 2011.

[3]JGJ 94—2008 建筑桩基技术规范[S].北京：中国建筑工业出版社,2008.

[4]DGJ08-11—2010 地基基础设计规范[S].上海, 2008.