Bridge expansion joint displacement monitoring device

Abstract

The invention discloses a bridge expansion joint displacement monitoring device. There is a first beam plate on one side of the bridge expansion joint and a second beam plate on the other side, including a horizontal spring body, a microprocessor, an early warning device, and a first tension pressure sensor. , the second tensile pressure sensor, fit the first shaped steel fixed on the end face of the first beam plate, fit the second shaped steel fixed on the end face of the second beam plate, the first shaped steel is provided with a first notch groove, and the second shaped steel The section steel is provided with a second notch groove, the first tension pressure sensor is embedded in the first notch groove, the second tension pressure sensor is embedded in the second notch groove, and the first tension pressure sensor is connected to the second tension sensor through the spring body. The tension and pressure sensors are connected, and both the first tension and pressure sensors and the second tension and pressure sensors are electrically connected to the early warning device through the microprocessor. The invention realizes accurate detection of the displacement of expansion joints parallel to and perpendicular to the axis of the bridge, has high efficiency, strong real-time performance, safe and simple inspection work, reliable and comprehensive results, and greatly saves detection costs and detection procedures.

Description

technical field [0001] The invention belongs to the technical field of bridge detection, in particular to a displacement monitoring device for bridge expansion joints. Background technique [0002] Bridge expansion joints refer to the gaps between two adjacent beams and slabs. Bridge expansion joints are mostly set at the weak points of the beam end structure, directly bear the load of the vehicle, and are mostly exposed to the natural environment. They are subject to various complex factors. It is very easy to produce different degrees of displacement changes. [0003] Bridge expansion joints are an important part of bridge design. It is required that the expansion joints can shrink freely in two directions parallel and perpendicular to the bridge axis, and can adapt to the expansion and contraction caused by factors such as temperature, vehicle load, humidity, and shrinkage and creep. changes etc. [0004] The displacement change of the expansion joint will affect the se...

AI Technical Summary

Problems solved by technology

At present, the inspection personnel standing on the bridge deck are mainly used to judge and identify with the naked eye. This detection method has a large safety problem, and the displacement and deformation of the expansion joint cannot be accurately observed by the naked eye. The accuracy is low, it is easy to misjudge, and the real-time performance is poor. Unable to detect problems in time and take measures to deal with them

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