| Double Leaning Tower of Long Span Cable-Stayed bridge which has no stay cable is a a new structural system, it has the structural characteristics of some cable-stayed bridge and backcableless cable-stayed bridge, and it has a tilt main tower to reduce the weight of main beam. Because of its unique, new, beautiful appearance and good force condition, in recent years, it used more often as the city bridge which has small and medium span at home and abroad. In-depth study of the static equilibrium properties of Double Leaning Tower of backcableless Cable-Stayed bridge with a Actual project, this thesis made some research of the bridge as follows.Through the Static equilibrium equation, this thesis do some research about the links of the bean,tower and Cable of Double Leaning Tower of backcableless Cable-Stayed bridge to know the characteristic of Static stress. Main tower is lighter than main beam, with the action of stay cable, Main tower sharing some self-weight of Main beam to make the Main tower in a state of no moment nearly.To study the characteristic of Double Leaning Tower of backcableless Cable-Stayed bridge, it is better to choose a main beam with large stiffness,a main tower Tilted 30 degrees to the shore,Rigid Regions between Beams and Towers. the Cable with Harp Style can bring a Uniform force and low utilization of the cable.The thesis carried out research on duble Leaning Tower of backcableless Cable-Stayed bridge, and take it for Systematic analysis and Construction Control analysis. In the course of the construction of which The FEA results are calculated to help guide the Control and adjustment of gable tension in the construction of cable-stayed bridge,all of this can ensure the bridge to be in a good appearance and to meet the requirements of mechanical properties. |
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