Simply Supported Steel Box Girder Block Assembling Construction Process And Study On Load Test Results Of Bridge

In recent years, the long span cable-stayed and suspension bridges construction rapid development, in the construction of these bridges with steel box girder is widely used, steel box girder structure thin appearance,also facilitate the factory prefabrication, site welding, assembling, and can effectively shorten the construction period, save the cost; in addition, the erection of temporary support, small to the other traffic effect of nearby, which of these advantage continuously in actual engineering construction be accepted.Our country in the recent exploration of steel box girder, also summed up a lot of experience. Papers based on Tang Jiaju bridge for construction background, emphatically introduced the advantages of steel box girder in a recent traffic building, steel box girder by subsection, block in the factory prefabricated thinking, and then hoisted on the spot, welding connection. At the same time in order to ensure the normal operation under dressed south high-speed, high-speed road widening firstly, and then the erection of temporary support, and checking the related support bearing capacity of steel box girder, the construction operation in the temporary support, ensure the safety in construction operation period of highway.For the actual clear steel box girder for the project in a stress situation, using finite element analysis software, through the modeling calculation and analysis of the beam body mechanical behavior and deformation, and the results were analyzed to see whether meet the corresponding requirements, in order to ensure the engineering quality. At the same time after completion of the project, timely bridge dynamic test, the corresponding dynamic by measuring bridge in the specification specified load under the action of stress and strainand flexural deformation results of analysis of bridge construction, the completion of the goal, and to evaluate their.As the main beam of steel box girder of modern bridge construction in body structure, its technical advantages are invented, has opened up a new development space for the development of the cause of the bridge, it makes the bridge construction is more close to the "safety, economy, beautiful appearance, the use of goal, we as the main force in the future of the cause of the bridge, we should be fully aware of the advantages of steel box girder,and firmly grasp the, dare toinnovation, to create the new achievement of bridge construction.