Bridge displacement and expansion joint width remote metering system based on internet of things and ultrasonic waves

Abstract

The invention discloses a bridge displacement and expansion joint width remote metering system based on internet of things and ultrasonic waves. The system is innovatively characterized in that ultrasonic reflective plates are respectively arranged on the surfaces of adjacent two sections of the bridge body; the two ultrasonic reflective plates are positioned on two sides of an area at which an expansion joint is positioned; a mounting rack is arranged between the two ultrasonic reflective plates and is fixed on a pier; two ultrasonic probes are arranged on the mounting rack; the transmitting areas of the two ultrasonic probes are respectively opposite to the reflective areas of the two ultrasonic reflective plates; the ultrasonic probes adopt transmitting / receiving integrated ultrasonic transducers. The system has the beneficial effects that a novel measurement means is provided for measurement of relative displacement between the bridge and the pier and displacement of the expansion joint of the bridge body, the technology of the novel measurement means is mature and stable, the data of the relative displacement between the bridge and the pier and the displacement of the expansion joint of the bridge body can be measured at high efficiency in real time, field operation of the personnel is not needed, and the cost is low.

Description

technical field [0001] The invention relates to a bridge safety monitoring technology, in particular to a remote measurement system for bridge displacement and expansion joint width based on the Internet of Things and ultrasonic waves. Background technique [0002] The relative displacement between the beam body and the pier on the bridge and the width displacement of the expansion joint between the beam body are key parameters in bridge health monitoring. So far, there is no instrument that can directly measure the above two displacements in the prior art , Generally, manual periodic inspection is used for measurement. The reliability and flexibility of manual inspection are poor. Not only the measurement cost is high, but also real-time measurement cannot be realized. At the same time, there are certain safety risks in high-altitude operations. Contents of the invention [0003] Aiming at the problems in the background technology, the present invention proposes a...

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Problems solved by technology

[0002] The relative displacement between the beam body and the pier on the bridge and the width displacement of the expansion joint between the beam body are key parameters in bridge health monitoring. So far, there is no instrument that can directly measure the above two displacements in the prior art Generally, manual periodic inspection is used for measurement. The reliability and flexibility of manual inspection are poor. Not only the measurement cost is high, but also real-time measurement cannot be realized. At the same time, there are certain safety risks in high-altitude operations.

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