花岗岩风化残积地层基桩侧摩阻性能试桩分析

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。

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

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.