Research On The Key Technology Of Strengthening In Huayudong Bridget

The trussed combination arch bridge originated by our country in the1980’s is such a new type. Compared with traditional truss bridge, it is simple and cost less, as well as benefits, so it had developed rapidly in the past20years. But many problems about this kind of bridge have arisen in recent years. For example, many cracks have been found at the intersections of the main trusses almost in all of these bridges, and some bridges even had been demolished, so it is necessary and exigent to investigate the damage reason of this kind of bridge.Firstly, combined with the structural characteristics of trussed combination arch bridge, the construction characteristics of the mechanical characteristics and disease characteristics were analyzed. Analysis, summed up the characteristics of trussed combination arch bridge built trussed combination arch bridge structure, construction, stress, disease characteristics. And bridge the existing reinforcement methods of analysis and evaluation.Secondly, analysis and evaluation of the existing bridge reinforcement method, combined with the characteristics of trussed combination arch bridge, the bridge maintenance and reinforcement of the principle of technology research, while the winding Trussed combination arch bridge, and the last quarter, real abdominal segment, the vertical rod and the inclined rodmaintenance and reinforcement of technical analysis. And various ancillary facilities maintenance and reinforcement were analyzed.Of the causes of poor bridge integrity based on cause, respectively, to take a targeted analysis to identify tangible, feasible solutions. And separately from the technical feasibility, the reinforcement effect, construction feasibility and economics of proposed research programs of trussed combination arch bridge prestressed reinforcement and technical feasibility of the bridge panel replacement.At last, the Huayudong Bridge research, reinforcement of key technologies for the reinforcement of the application instance, the use of a trussed combination arch bridge reinforcement based on the project, compared to the analysis of the structural condition of the bridge before and after reinforcement, the reinforcement method is reasonably practicable, the reinforcement effect is obvious. Summarizes the results of the full text of theory and model identification, and trussed combination arch bridge key technology development prospect...