Research Of Cable Force For Cable-Stayed Bridge

The Cable-stayed bridge with its superior ability, reasonable across the power system and the novel structure, has become the form in the development of modern bridge engineering is the fastest, most competitive bridge. With the increasing span structure and the diversity and complexity, to design and construction brought many new topic.For existing cable-stayed bridge state of force calculation method is discussed and summarized, the determination of reasonable bridge state standards. Build structure analysis and optimization model, using force, stress and minimal bending energy balance and influence matrix method to determine reasonable cable bridge condition. Analyzed the development situation of the cable-stayed bridge is discussed, and the research status and re cable-stayed bridge cable construction, the determination method of optimization methods are compared and analyzed the advantages and disadvantages, and the calculating process of attention.For the existing state of rational construction state cable-stayed bridge cable and calculation method is discussed, in construction control, the structure calculating analysis methods include:forward analysis, installing, inversion analysis method of analysis and calculation, a fall down iteration method and no stress state law. Introduces various analysis method of calculation steps, attention, and its advantages and disadvantages.What is proposed with close together? Not cooperate close together, do not close together with consideration of the cable-stayed bridge days analysis. The lasso and fold section are considered not closed for cable-stayed bridge is analyzed combining loading, the initial equilibrium analysis of the initial load overlay calculated not closed as construction phase control ability, cable. Not to fall down, just as analysis can also make the final phase equilibrium analysis results with the initial. And two models is validated for the three towers, a simple model for the engineering example, a competing bridge is verified.