Instruments and methods for cable-stayed bridge cable replacement project monitoring

Abstract

The invention discloses equipment and a method for cable-stayed bridge cable replacing engineering monitoring. The monitoring comprises the monitoring of the bridge abutment, the bridge pier, the cable bent tower, the main girder and cables. In the cable-stayed bridge cable replacing engineering construction process, a theodolite is adopted to monitor the centre line of the surface of a cable-stayed bridge, a level instrument is adopted to monitor the elevation of the surface of the cable-stayed bridge and the top surface of the bridge abutment, cable bent tower swing test laser transmitting devices and cable bent tower swing target spot devices are adopted to monitor the inclination and the swing of the cable bent tower, guyed photoelectric displacement sensors are adopted to monitor the linear displacement of the main girder, photoelectric building component deflection testers are adopted to monitor the deflection of the main girder, communicating pipe type component inclination sensors are adopted to monitor the lateral torsion degree of the main girder, arm-type angular displacement sensors are adopted to monitor the angular displacement of the main girder structure, and three-dimensional swing sensors are adopted to monitor the swing of the main girder. According to the monitoring equipment used in the cable-stayed bridge cable replacing engineering process, monitoring can be performed on the cable-stayed bridge in a systematic, continuous and real-time manner, and technical supports are provided for the cable-stayed bridge cable replacing engineering construction process.

Description

technical field [0001] The invention relates to an instrument and method for monitoring abutments, piers, cable towers, girders and cables of a cable-stayed bridge during the construction of a cable-replacement project, in particular to a cable-stayed bridge cable-replacement project monitoring equipment and methods. Background technique [0002] At present, during the operation of some cable-stayed bridges, due to the influence of factors such as load, material, maintenance, construction, design, and environment, the cables of the cable-stayed bridges have quality problems such as corrosion, fracture, and drop, which involve cable-stayed bridges. For the safety and function of the bridge, it is necessary to change the cables and adjust the stress state of the main girder, cable tower and cables in time. However, the existing monitoring equipment and methods used in the construction of cable-stayed bridge cable replacement projects cannot systematically, continuously, and r...

AI Technical Summary

Problems solved by technology

However, the existing monitoring equipment and methods used in the construction of cable-stayed bridge cable replacement projects cannot systematically, continuously, and real-time monitor the main girder, cable tower, and cable, etc., and cannot quickly and timely reflect the cable-stayed bridge. In the case of force, displacement, swing, etc. during the cable replacement, it is impossible to provide technical basis for the adjustment of the cable replacement process and cable force in time, and it is impossible to effectively control the risk of the cable-stayed bridge cable replacement project construction.

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