Ultrasonic detection tube, abbreviated as sonic tube, iscast-in-place pileDuring ultrasonic testing, the probe enters the channel inside the pile body. It is an important component of the ultrasonic testing system for cast-in-place piles, and its pre embedding method inside the pile and its layout on the cross-section of the pile will directly affect the testing results. Therefore, the arrangement and burial method of ultrasonic detection tubes for the piles to be tested should be marked on the drawings during design, and the quality of burial should be strictly controlled during construction to ensure the smooth progress of the testing work.

The advantage is that it is easy to install and can be welded to the steel frame by electric welding, which can replace some steel sections. Moreover, due to the steel pipe The stiffness is relatively high. After being buried, its parallelism and straightness can be basically maintained. Many large-diameter cast-in-place piles use steel as the ultrasonic detection tube.

Ultrasonic detection tubes can be used not only as detection channels and to replace some steel bar sections, but also as pipelines for pile bottom grouting. Experimental results have shown that cast-in-place piles treated with bottom slurry can significantly improve their bearing capacity. At the same time, the ultrasonic detection tube can also be used as a pipeline for flushing and grouting treatment of accident pile defects. In this case, measures need to be taken to drill through the pipeline at the defect location that requires grouting.