长螺旋钻孔压灌桩穿越干砂层的施工方法研究  

Study on construction method of long spiral bored pressure grouting pile through dry sand Layer

作　　者：曹巍 CAO Wei(Beijing Rongchuang Geotechnical Engineering Co.Ltd,Beijing 100085,China)

机构地区：[1]北京荣创岩土工程股份有限公司,北京100085

出　　处：《地基处理》2019年第2期29-32,共4页Journal of Ground Improvement

摘　　要：本文结合北京海淀区066项目工程实例,通过关键技术的改进和创新应用,研究出了长螺旋钻孔压灌桩穿越厚大干砂层的特殊施工方法,和传统方法相比,该方法在确保桩身质量施工的情况下,可降低造价,并加快进度。该方法成功应用于实际工程中,证明其可行性及实用性,期望这种方法为类似地层桩基施工时提供一种行之有效的解决措施。Based on the project 066 in Haidian District of Beijing,with the improvement and innovative application of key technologies,this paper has studied the special method of construction of the long spiral bored pile crossing through the thick dry sand layer.Compared with traditional methods,this method can reduce the cost and speed up the progress under the condition of ensuring the the pile body quality.It has been successfully applied in pratical engineering,which indicates its feasibility and pracaticality.It is expected that this method can provide an effective solution for pile construction in similar strata in the future.

关 键 词：长螺旋钻孔压灌桩 干厚砂层 混凝土护壁 

分 类 号：TU745[建筑科学—建筑技术科学]