Mechanical Analysis Of A Steel Steel Truss Suspension Bridge

The development of modern suspension bridge in China lagged far be countries. In recent years, however, with China' s economy leaping forward, susp hind that in west ension bridges are progressing rapidly and built in key sections of the transportation across rivers and islands. The differences between our country and the overseas are diminishing in bridge building, and suspension bridge has a promising future in Chinese traffic construction.The present model for three-dimensional analysis of suspension bridges is framework model that based on spatial pole cells and girder cells. Many substantial problems concerning the complex structure of suspension bridges can be well resolved and get good accuracy by applying this existing model. There are a considering amount of examples for suspension bridges analysis , which based on simplification and assumptions in a great measure. In these examples, detailed work cannot be carried out completely, especially for ascertaining of the structural parameters. And so it is impossible to take full advantages of the finite element analysis in them.The author analyzes the mechanical properties of a suspension bridge by utilizing ANSYS finite element software in the emulation mode. The giant software of ANSYS finite element has extensive applications in bridge engineering and can be used to analyze all kind of bridges owing to its abundance in stocks of cells and materials. Emulate system is to combine status of the construction, and reflect the general features of the bridge accurately. Integrating the two methods mentioned above, a moldering method with sampling terms is derived and compared with other process computing. It is shown that the numerical results are precise enough for project analysis.Subsequently, it has been done that: (1) static analysis of a steel stiffening truss suspension bridge by considering both dead load and live load. The computing results are compared with other process computing; (2) dynamic analysis of the above bridge, which includes the response spectrum analysis and the time history analysis. The earthquake response analysis is carried out in two horizontal one vertical directions. Moreover, the results are contrast with others; (3) the influence analysis of the main structural parameter on the suspension bridge. The conclusions are useful for structural design of the suspension bridge.