Multi-mode aerodynamics analysis of long-span bridges

Nicholas P. Jones, Jain Anurag, Robert H. Scanlan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Multi-mode responses to wind excitation have been estimated in the past by considering the response of each mode and then taking the root-sum-square for the total response. Other procedures, mainly in the time domain also exist but they have certain simplifying assumptions and limitations which disable the complete analysis of the systems as well as the estimation of the certain important criteria, e.g., flutter speed. A more comprehensive procedure is under development which will aim to capture the full bridge aerodynamics by considering simultaneously the effect of more than one mode. Frequency-domain functions (flutter derivatives) are preferred by most bridge dynamicists because they are easier to obtain experimentally. In this paper, the fundamental single-mode frequency-domain formulation is extended into the multi-modal domain.

Original languageEnglish (US)
Title of host publicationStructures Congress XII
PublisherPubl by ASCE
Pages894-899
Number of pages6
ISBN (Print)087262952X
StatePublished - 1994
Externally publishedYes
EventProceedings of the Structures Congress '94 - Atlanta, GA, USA
Duration: Apr 24 1994Apr 28 1994

Publication series

NameStructures Congress XII

Other

OtherProceedings of the Structures Congress '94
CityAtlanta, GA, USA
Period4/24/944/28/94

ASJC Scopus subject areas

  • General Engineering

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