Intelligent interpretation system and method for broken PCCP (prestressed concrete cylinder pipe) steel wires

Abstract

The invention discloses an intelligent interpretation system and method for broken PCCP (prestressed concrete cylinder pipe) steel wires. The system comprises a vehicle, wherein a receiving probe, a distance measuring wheel and a transmitting probe are arranged on the surface of the vehicle, and a main control computer and a detection host computer electrically connected with the main control computer are arranged in the vehicle; the receiving probe, the distance measuring wheel and the transmitting probe are electrically connected with the detection host computer in the vehicle. According tothe intelligent interpretation system and method for the broken PCCP wires, intelligent interpretation of the number and position of the broken PCCP steel wires can be realized, the broken wires are positioned accurately, the number of the broken PCCP steel wires can be accurately calculated by a fitting expression, and the method has the advantages of accurate and objective calculation of the number of the broken wires, high efficiency and high adaptability compared with manual interpretation .

Description

technical field [0001] The invention relates to the field of concrete detection, in particular to an intelligent judgment system and method for broken PCCP steel wires. Background technique [0002] PCCP pipe (Prestressed Concrete Cylinder Pipe) is the abbreviation of prestressed concrete pipe with steel cylinder. It is a large-diameter and high-pressure pipe widely used in the world. It is composed of prestressed steel wire (diameter) and cement mortar protective layer outside the steel wire. The two ends of the pipe are respectively welded with steel socket ring and socket ring. The flexible joint of the pipe is sealed with a sliding rubber ring. In the working state, the thin steel cylinder embedded in the pipe wall has anti-seepage function, and the prestressed steel wire wound outside the pipe core and the concrete wall of the pipe core bear the internal water pressure and external load of the pipe, so the PCCP pipe is a A pipe type that combines the advantages of stee...

AI Technical Summary

Problems solved by technology

Due to the attenuation of the steel cylinder wall of the PCCP pipe, the far-field eddy current signal induced by the receiving coil is extremely weak, and the noise of the system itself, the noise introduced by the vibration of the test platform, and even the external electromagnetic interference noise may be several orders of magnitude larger than the detection signal, which is useful The signal can be completely lost in the noise

[0004] Although the existing technology has realized the extraction of far-field eddy current signals, the position and quantity of broken PCCP steel wires can be determined by manual interpretation. The disadvantage of this detection method is that the efficiency of manual interpretation is extremely low. It can reach tens of thousands of kilometers, and the mileage of each broken wire detection is tens of kilometers or even hundreds of kilometers. It will take dozens of days or even months to completely rely on manual interpretation of all data; and it is affected by different people's experience and professional background. The results of manual interpretation are not accurate and objective enough, which will lead to ambiguity in the test results

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