A method for remote monitoring of bridge deflection

Abstract

An opposed bridge deflection remote monitoring system, including a liquid storage tank, a connecting pipe, a double base point calibration module, a deflection measurement sub-module, a data bus, a data synchronous collector, an industrial computer and a remote communication module, a liquid storage tank and a double base point The calibration module is installed on the vertical section of the communication pipe, and the horizontal section of the communication pipe communicates with each deflection measurement sub-module; the deflection measurement sub-module includes a stop valve, a first liquid storage pipe, a second liquid storage pipe, a first pressure sensor and For the second pressure sensor, the first liquid storage pipe and the second liquid storage pipe are respectively installed at both ends of the shut-off valve and arranged horizontally and symmetrically. The second liquid storage pipe is connected to the horizontal section of the communication pipe through the connection pipe interface; the first liquid storage pipe and A first pressure sensor and a second pressure sensor are respectively arranged at the outer end of the second liquid storage tube. The invention avoids the influence of liquid vibration in the connecting pipe on the measurement data by measuring the pressure values ​​of the pressure sensors corresponding to the two opposite liquid storage pipes, and realizes the accurate measurement of the dynamic deflection.

Description

technical field [0001] The invention relates to the technical field of monitoring, in particular to a bridge deflection remote monitoring system and monitoring method. Background technique [0002] Bridge deflection is an important parameter to measure the life and health of bridges. At present, domestic and foreign scholars have done a lot of research on bridge deflection monitoring. The main monitoring methods are as follows: [0003] (1) Level method: [0004] Usually, the bridge deflection is measured manually using theodolite, dial gauge and other instruments, but these methods are difficult to accurately reflect the safety status of the bridge under the dynamic load generated by the passing of vehicles, and cannot meet the needs of long-term automatic monitoring of deflection. Dynamic measurement is a real-time and online monitoring of bridge deflection, which can accurately reflect the real-time deformation state of the bridge, and can detect the early signs of acci...

AI Technical Summary

Problems solved by technology

Since the vibration of the bridge will also cause the liquid in the connecting pipe to vibrate and shock the sensor, it is difficult to guarantee the measurement accuracy in this dynamic and complex environment.

Images