Application of Ultrasonic Testing Method in Concrete Testing of Bridge Pile Foundation
Release time:
2021-08-20
When using the ultrasonic testing method to detect the concrete of bridge pile foundation, it is necessary to embed the acoustic measuring tube in the bridge pile foundation. The material of the acoustic measuring tube is made of metal. Damage occurred during the construction of the foundation concrete.
The pipe diameter and the number of embedded acoustic measuring tubes need to be determined according to the actual diameter of the bridge pile foundation. Generally, the pile foundation diameter is 1.5m as the boundary, and the embedded 3 acoustic measuring tubes with the diameter of the bridge pile foundation within 1.5m , 4 acoustic measuring tubes are used for bridge piles with a diameter of more than 1.5m. When using ultrasonic technology to detect bridge pile foundation concrete, first select a reasonable transducer and other instruments and adjust the parameters. Adjust and verify that the value of the front and back measuring points of the transducer is within 250mm. Stabilize the emission voltage of the ultrasonic transmitter.
When using the ultrasonic method to inspect the concrete of the bridge pile foundation, the distance between the monitoring points is controlled between 0.2m-0.5m. In order to ensure the accuracy of the inspection data of the concrete structure of the bridge pile foundation, it is necessary to carry out multiple inspections and random inspections at each measuring point, and control the relative standard deviation of the amplitude with a standard of 10% to control the relative standard deviation of the sound time within the error range of 5%. .
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