Motion Based Design of Cable-Stayed Bridges
نویسنده
چکیده
Recent increases in limit spans of cable-stayed bridges have highlighted the need for new concepts in analysis and design. The increased flexibility requires more theoretical studies on non-linear behavior and on dynamic analysis. Design also is more oriented to a performance-based approach: motion control is more important than strength analysis. My main objective is to define what are the parameters to control in order to design structures that meet the performance requirements in terms of displacements, velocities and accelerations at particular points. My methodology is based on the definition of simplified methods for performance based design of cable-stayed bridges. The results of these methods, implemented on simulation models, are verified through comparison with the results of detailed finite element analyses. My approach is extended both to static and dynamic analysis. The results are compared to those obtained by more traditional methods and show the effectiveness of this approach. The conclusion is that it is possible to rely on these simplified methods especially for conceptual design of cable-stayed bridges. Further evolutions are foreseen in the field of aeroelasticity and active control theories applied to long span civil structures. Thesis Supervisor: Jerome J. Connor Title: Professor
منابع مشابه
DESIGN OPTIMIZATION OF CABLE-STAYED BRIDGES USING MOMENTUM SEARCH ALGORITHM
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تاریخ انتشار 2009