Large-span Steel Truss Tied Arch Bridge Construction Process Control Research Of Key Technologies

Steel Truss tied arch bridge, with its unique advantages, a magnificent appearance, beyond capacity, higher capacity advantages. Compared with other types of bridges, steel truss Tied Arch Bridge stiffness greater stability and resistance to shock, are better. When the bridge site in the wind or seismic intensity of the larger area, or under the railway bridge load and good geological conditions, the steel truss arch bridge serves consider adopting a programme of long-span bridge. In recent years, many of the construction of long-span arch bridge, the construction of China's arch bridge has accumulated rich experience, both static and dynamic characteristics of theoretical research, or in the design and construction regard, the Long-span steel pipe and concrete arch bridge Long-span steel arch bridge on me more, on the contrary, due to the construction of long-span steel truss arch bridge is also less, for the construction of long-span steel truss arch bridge on the control of very few.This paper Chaotianmen Yangtze River Bridge for the research background, and the Long-span steel truss Tied Arch Bridge Construction Process Control on several key issues, including: Construction of the overall process control programme, pre-control analysis and the initial installation parameters, and at the inter - Erection control, the main arch cable-stayed cantilever deduction linked to the installation of a main arch-control, Suspenders Tied installation analysis, impact analysis, such as temperature, based on Chaotianmen bridge construction project in Chongqing control and provide a theoretical basis.