Research on Key Technologies for Rotating Construction of T-shaped Rigid Frame Bridges Crossing Existing Lines
With the development of three-dimensional traffic,in the construction process of the existing bridge rotation of the upper span railway,due to the influence of railway operation,the traffic operation cannot be hindered for a long time,so the construction difficulty of the upper span bridge is increased.Based on the above reasons,based on the construction of T-type rigid bridge of Shanghai-Chongqing-Chengdu high-speed railway,the calculation of the rotating parameters such as traction and safety factor in the construction of the rotating structure is studied,so as to provide a basis for the layout and selection of the rotating equipment.By studying the key technical problems in the rotating construction,the important nodes in the process of controlling the bridge span can ensure the structural safety and stability in the construction process under special working conditions.
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