It is introduced briefly that the principles of testing piles by low-strain reflected wave, and the factors influencing the quality of pile shaft as well as its applications in actual projects.
简要介绍了低应变反射波测桩的原理，以及影响检测桩身质量的影响因素，并介绍了在实际工程中的应用情况。
These factors, which include slurrys preparation, circulation, depuration and so on, would influence drilling speed, bore quality, exertion of pile shaft resistance and base resistance.
泥浆制备、循环、净化等因素的好坏直接影响到钻进速度和成孔质量、桩侧摩阻力及桩端阻力的发挥。
Since the excavated hole is also the form of the pile shaft, its quality control plays an important role of the whole installation.
挖孔桩的孔筒是桩的模具，其成孔质量检验是桩基施工的重要组成部分。
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