卵石地层中CFG桩的设计及其施工技术
投稿时间：2014-02-26  修订日期：2014-05-30  点此下载全文
引用本文：李开洋,薛倩冰,陈永前,等.卵石地层中CFG桩的设计及其施工技术[J].钻探工程,2014,41(7):62-64，69.
LI Kai-yang,XUE Qian-bing,CHEN Yong-qian,et al. Design and Construction Technology of CFG Plie in Pebble Stratum[J]. Drilling Engineering, 2014,41(7):62-64，69.
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作者单位E-mail
李开洋* 中国地质大学〈北京〉工程技术学院 likaiyang1990@126.com 
薛倩冰 中国地质大学〈北京〉工程技术学院  
陈永前 中国地震局地壳应力研究所〈地壳动力学实验室〉 404298405@qq.com 
李凤 河北省地震局 kindlifeng@126.com 
中文摘要:某工程项目位于北京市门头沟区，场地内卵石、碎石地层层厚大，施工困难，选用CFG桩进行地基处理。考虑场地地层条件、施工设备、项目工期以及工程造价，按变形控制对CFG桩进行设计，同时根据场地条件及CFG桩特点制定了施工流程。对CFG桩施工中可能出现的问题，提出了相应的质量控制措施，如埋设护筒、选用合适的旋挖钻头等。
中文关键词:CFG桩  设计  变形控制  卵石地层
 
Design and Construction Technology of CFG Plie in Pebble Stratum
Abstract:The paper introduces an engineer project in Mentougou of Beijing, the construction was difficult because of the thick pebble and crushed stone layer in the site, CFG pile was selected for foundation treatment. In view of the formation conditions, construction equipments, project construction period and cost of the project, CFG pile was designed with deformation control and according to the site conditions and the characteristics of CFG pile, construction process was formulated. For the problems may arise in the CFG pile construction, the corresponding quality control measures are put forward, such as embedment of steel protective pipe and selection of appropriate rotary drilling bit.
keywords:CFG pile  design  deformation control  pebble stratum
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