Min Pu Bridge Construction Technology Of Steel

Since the 90s of the 20th century, China's bridge construction is experiencing a glorious period of development,establishment of a large number of novel structure, technical complexity, design and construction difficult, with modern high-tech quality and long span steel bridge across the sea of crossing the river. Min Pu Bridge is the world's largest twin dual-span cable stayed bridge road surface layer, the side span and main span are the basic steel structure, is also the difficulty of its production is a world-class, therefore, through the bridge construction technology to the same type of steel bridge construction at home and abroad to provide reference and an important reference value.In this paper, Min Pu Bridge Steel through the whole construction process briefly, and then choose the construction process re-analysis of the welding process, the factory's main construction site lifting techniques and processes. In the welding process, the 40 kinds of welding process test, and forming a complete coverage of the welding procedure qualification, and to study ways to eliminate residual stress. In the pre-assembly process, the main frame of the ship's tire technology and the construction of sub-total group pre-assembly method and applied to the bridge's construction process, solved the Yang-welded construction process and the factory's site too limited and weak lifting transport equipment, shorten the construction cycle. Lifting process in the field, combined with the actual situation of the bridge, using a floating crane erection method, try to walk hanging rack, cantilever erection method and drag to the construction Combination slip, drag slip law because the site working conditions limited study of the slide technique, using MIDAS software to analyze the mechanical properties of slide, and well used in lifting technology. This research, on the Min Pu Bridge opened to traffic last successfully played an important role.