Wind‐Induced Nonlinear Lateral‐Torsional Buckling of Cable‐Stayed Bridges
Publication: Journal of Structural Engineering
Volume 120, Issue 2
Abstract
A finite element approach to calculate directly the critical wind velocity for the nonlinear lateral‐torsional buckling instability of long‐span cable‐stayed bridges under the displacement‐dependent wind loads is presented. An analytical modeling of wind‐induced lateral‐torsional buckling is formulated taking into account the three components of displacement‐dependent wind loads as well as geometric nonlinearity. A combination of the eigenvalue analysis and the updated bound algorithm for wind velocity is applied to automatically calculate the critical wind velocity. The results show that the incorporation of the three components of displacement‐dependent wind loads as well as the geometric nonlinearity in the analytical modeling of the lateral‐torsional buckling instability results in significant reduction in the critical wind velocity compared with both the conventional non‐linear torsional divergence and linearized lateral‐torsional buckling.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 2 • February 1994
Pages: 486 - 506
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Oct 15, 1992
Published online: Feb 1, 1994
Published in print: Feb 1994
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