Structure Simulation Analysis And Construction Controlling Of Special Cable-Stayed Bridges

With the development of cable-stayed bridge, structure analysis and construction controlling of cable-stayed bridges has become a hot issues .For this reason, many experts have done a wide range of research and accumulated a wealth of experience. For the special-shaped cable-stayed bridge just have only a few research results can be used. Special-shaped cable-stayed bridge is an asymmetrical structure so we can not simplify the spatial Structure problem for the plane. In this paper, we used catenary cable element imitate the cable, use the theory which is based on the CR formulation effects and considered the beam-column effect and the large displacement to establish of space model. This model is used to study the feasibility of structure analysis and construction controlling of special-shaped cable-stayed bridges.First of all, collect a lot of information at home and abroad, summed up the static analysis of linear and nonlinear finite element method as well as geometric non-linear and the methods used to determine the rational design of the cable-stayed bridges. Combined with the structural characteristics of zhuzhuang overpass, explained the nonlinear finite element method,TL formulation,TL formulation and coordinate system based on the CR formulation.Secondly, summed up the control system of cable-stayed bridges,the Purpose,necessity,Content, methods and impact factors of construction control then determined the construction control processes.Thirdly, use the theory which is based on the CR formulation effects and considered the beam-column effect and the large displacement to establish of space model for zhuzhuang overpass. Done a simulation analysis of the construction process. Calculated the cable force at reasonable and rational state, also calculated the displacement, cable force, stress in every construction stage.Finally, in accordance with the characteristics of Zhu Zhuang overpass, select shift control for the major projects, the cable force control for the supporting projects, stress as a reference implementation of the project construction control. Measured data and analysis data is several similar, when the overpass Completed,it has a smooth linear/Reasonable force. So we can see use the theory which is based on the CR formulation effects and considered the beam-column effect and the large displacement to establish of space model,and use this model with Structural analysis and construction control is feasible.