Analysis Of Changes Of The Suspension Bridge Design Parameters

The suspension bridge spanning capacity is the largest in all of bridge type. Across the river, canyons and other areas, the suspension bridge will become a necessary program. With China's economic development, the suspension bridge project has become more and more, the suspension bridge design theory is continued developing, there are many problems that need further study. This paper is based on the Yangtze river bridge for engineering background, studying single span suspension bridge, consider the suspension the two systems bridge---parallel systems and space systems, change the suspension bridge design parameters, study the impact of design parameters on the static characteristics of suspension bridges.(1) This paper describes the history of the world's suspension bridges, and the suspension bridge features. The development of China's suspension bridge, the future of suspension bridges develops trends.(2) described the development of the computational theory of suspension bridges, from the earlier theory of elasticity, to the deflection theory, now by computer finite displacement theory. This paper uses the finite displacement theory as the theoretical basis.(3) described the background of the project overview, and explained the two systems suspension bridge, and under the same conditions to compare the static characteristics of the two system suspension bridge. Change the design parameters of the diameter of the sling, the contrast of the static characteristics of the two systems under the suspension bridge.(4) introduced the main form and layout prepared of suspension bridge stiffening girder, through the xihoumen stiffening girder suspension parameters to compound this bridge worked double box girder parameters, change of steel box girder suspension bridge single box for double box, contrast the static characteristics of the two steel box girder.(5) described the CFRP material properties, as well as its future development trends, and change the material of the main cables compared to the CFRP and steel main cables of suspension bridges.Finally summarized the full text, and expounds the future development trend of suspension bridge.