It introduces the current hazards of borehole cast-in-place concrete pile, analyses the reasons, and provides the preventions.

介绍了钻孔灌桩柱的常见病害，分析了导致病害及缺陷产生的原因，并针对具体问题提出了防治措施。

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Based on the practice, it analyses the performance and limitation of borehole cast-in-place concrete pile, and introduces the methods of quality test: especially the stress reflection method.

结合工程实例，分析了钢筋混凝土钻孔灌注的特点及常见缺陷。介绍了基桩质量检测的常用方法及反射波法检测钻孔灌注桩的基本原理、方法。

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