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Elimination of resonant vibration in cable stayed bridges and footbridges by active steering of tension in cables
Author(s) -
Pakos Wojciech,
Grosel Jacek,
Wójcicki Zbigniew
Publication year - 2008
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200810901
Subject(s) - structural engineering , vibration , finite element method , tension (geology) , sensitivity (control systems) , engineering , notice , acoustics , physics , materials science , compression (physics) , composite material , political science , law , electronic engineering
The paper presented proposes a new approach to the elimination of vibration in cable stayed bridges and footbridges which may be applied to dynamic analysis of modern cable stayed bridges with typical structure systems. The reduction of the vibration is to be achieved by way of active steering of the tension in cables. The problem of eigenproblem sensitivity analysis with respect to change of the cable tension in cable stayed footbridges and bridges is considered. In the future, the information gained from the sensitivity analysis may be used to calculate how to steer the cable tension in a way that will ensure the most efficient resonant vibration elimination. Particular notice has been paid to the vibration of cables. The matrix equation of motion of a three–dimensional computer model of the structure has been created with the help of a non–standard use of standard computer software leaning on Finite Element Method (FEM). The system Mathematica and the authors' own program have also been used to analyze the eigenproblem sensitivity of bridges. An example has been provided. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)