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钻孔灌注桩是桥梁下部结构加固地基的一种重要形式,声波透射法作为大直径钻孔灌注桩检测常用的一种方法,在工程实践中具有很多其它检测方法不具有的优点。通过阐述超声波检测钻孔灌注桩的原理和方法,结合石家庄某工地现场不同基坑中钻孔灌注桩的检测波形图,分析声波透射法检测出的桩基缺陷对应的声学参数变化,为工程技术人员利用声波透射法检测桩基提供参考。
Bored piles are an important form of reinforced foundation of substructure of bridge. Acoustic transmission method, as a commonly used method for testing large diameter bored piles, has many advantages that other testing methods do not have in engineering practice. Through the principle and method of ultrasonic testing of bored piles, combined with the detection waveform of bored piles in different foundation pits at a construction site in Shijiazhuang, the change of acoustic parameters corresponding to pile foundation defects detected by sonic transmission method is analyzed. Personnel using sonic transmission method for testing pile foundation.