Method for nondestructive measurement of active and passive constraint forces of FRP confined concrete column based on ultrasonic wave
A technology for confining concrete and concrete columns, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, measuring devices, and testing the strength of materials by applying stable tension/pressure. The calculation results of FRP-constrained concrete are unsafe and other problems, to achieve the effects of real-time monitoring of safety and health, intuitive measurement results, and simple operation.
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[0023] The specific implementation manner of the present invention will be described below in conjunction with the technical scheme of the present invention and the accompanying drawings.
[0024] As shown in the figure, the embodiment of the present invention provides a detection device corresponding to the ultrasonic-based non-destructive measurement of the active and passive restraint force methods of FRP-confined concrete columns. The detection device includes an FRP confined concrete column 1 to be tested, an ultrasonic transmitting sensor 5 , a signal amplifying device, an ultrasonic receiving device 6 and a computer 7 . Wherein, the ultrasonic transmitting sensor 5 is embedded in the central position of the required measurement section in the column before the core concrete is poured, and the ultrasonic receiving device 6 is closely attached to the FRP outer surface of the middle section of the FRP confined concrete column 1 to be measured. Preferably, The ultrasonic tr...
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