Scheme Design And Structural Analysis Of Cable-Stayed Bridge With High And Low Towers And Parallel Cable Plane

Based on the design scheme of the Second Wujinag Bridge, the thesis focused on design and research of cable-stayed bridge with high and low towers by building up the integrated finite element model with MIDAS/CIVIL, a large-scale FEM software. At first, the author used minimum bending energy method which took the stress of tower and girder in the finished state as the objective function to determine reasonable finished state, then adopted the backward analysis-forward iteration method to determine reasonable construction state. The thesis also simulated the entire construction course with two case: took time-dependent effect into account or not, principally analyzed the time-dependent effect on the performance of structure. Seismic characteristics of structure was also studied by the response spectrum analysis in the thesis. At last, the thesis researched the stability of construction and finished states. Therefore, the static, dynamic, and stable behavior and analysing method of cable-stayed bridge with high and low towers were comprehensively understood.