Flutter analysis for long span bridges

The dynamic effects of wind-structure interaction have become increasingly important in recent times due to trends toward more slender structures. Long span bridges are particularly susceptible to aerodynamic influence and as such it is an important design consideration. This paper discusses and compares the computational simulation and experimental measurement of flutter variables. Flutter is an aeroelastic phenomenon where divergent oscillations have the ability to destroy the deck structure. The Theodorsen theory for streamlined bodies is solved for a flat plate that is investigated experimentally within a low-speed wind tunnel. The critical flutter velocity and structural motions are identified from structural vibration measurement and are compared against those predicted by Theodorsen. It is ascertained that flat plate flutter theory is becoming increasingly applicable to modern day bridge deck sections as they become more streamlined. (a) For the covering entry of this conference, please see ITRD abstract no. E214936.

Language

  • English

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Filing Info

  • Accession Number: 01051016
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Jun 11 2007 1:09PM