花岗岩风化残积地层基桩侧摩阻性能试桩分析  

Analysis on Test Pile for Side Friction Performance of Foundation Pile in Weathered Granite Residual Stratum

作　　者：刘雪岭 左战旗 王亚芳 LIU Xueling;ZUO Zhanqi;WANG Yafang(China Railway Liuyuan Group Co.,Ltd.,Tianjin 300000,China)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300000

出　　处：《路基工程》2023年第1期148-152,共5页Subgrade Engineering

摘　　要：以广州市轨道交通7号线某停车场建筑基桩现场工程试桩为例,分析花岗岩残积地层中钻孔灌注桩侧摩阻力取值问题,同时对影响钻孔灌注桩成桩质量的因素进行分析;通过对泥浆护壁成孔的钻孔灌注桩和预应力高强管桩的基桩成桩质量及桩基检测结果进行对比,论述两种桩型在该类地层中的适用性。Taking the field test pile of building foundation pile in a parking lot of Guangzhou rail transit Line 7 as an example, in this paper, the value of side friction of bored pile in granite residual stratum and the factors affecting the quality of bored pile are analyzed. The pile quality and pile foundation detection results of two kinds of foundation piles, namely, bored pile with slurry wall and prestressed high-strength pipe pile are compared, and the applicability of the two pile types in this type of stratum is discussed, which provides reference for the design and construction of pile foundation in this type of stratum in Guangzhou.

关 键 词：花岗岩风化残积地层 建筑基桩选型 侧摩阻力 钻孔灌注桩 预应力管桩 

分 类 号：U435[交通运输工程—道路与铁道工程]