Surveillance System Research In Construction Of Cable Stayed Bridge With Large Span

This paper has studied and set up a supervision and control system based on the backing item of Jinzhou Yangtze River Bridge with main span of 500m, by analyzing the development of construction control of cable-stayed bridges in china and abroad, foreword calculation of 250 work cases of plane bar FEM, adoption of advanced equipment and devices, quick analysis of gathered data research of karemen filtering method, least square and gray model GM (1,1) into the identification of the real state and precuts and effective manage mechanism.It has also pounded the keys, devices, disposition of surveyed spots, measure method and procedures, data gathering and process (relation with construction workmanship) , error analysis and adjustment, control precision and rules, mechanism and method of control, tables of records, results and discussion. After completion, the Bridge has good behaviors in dead loads state, cable forces, shape style of main beam, stress and strain of concerned sections, displacements of the tower top, which assure the reasonable state of cables, main girder and towers, and safe under running, demonstrate supervision. The Studies of this paper is a beneficial porker to the cable-stayed bridges with long span, which will bring about a good social or economic benefit.