新沈阳南站厚砂层成桩分析及质量预防  

The Pile-forming Analysis and Quality Precaution of Thick Sand Layer in the New Shenyang South Railway Station

作　　者：南继芹 

机构地区：[1]锦州锦铁房地产开发有限责任公司,锦州121000

出　　处：《北方交通》2013年第10期26-28,共3页Northern Communications

基　　金：住房和城乡建设部科学技术项目(2012-K2-31);高校优秀科技人才支持计划(LR2013025);国家自然科学基金项目(51078242)

摘　　要：超长灌注桩在厚砂层施工过程中,常伴随着塌孔、钻孔倾斜、卡钻等问题。结合新沈阳南站工程实例,阐述了施工常见问题的分析和预防、泥浆配比试验及施工工艺优化,显著提高了超长钻孔灌注桩的施工质量,减少了质量事故的发生。During the construction of thick sand layer, there are usually some problems atong w^tn over, o,,~ cast -in -place pile. Combined with the engineering project in new Shenyang South Railway Station, the analysis and prevention of frequent questions during construction, slurry ratio test and construction technology optimization are explained, which striki~$1y improved the construction quality of overlong cast - in - place pile and reduced the accidents due to poor quality.

关 键 词：厚砂层 钻孔 泥浆 清孔 成桩 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]