Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
510552 | Computers & Structures | 2006 | 13 Pages |
Abstract
An evaluation of the importance of geometrically nonlinear effects on the structural static analysis of steel cable-stayed bridges is presented. A finite element model is analyzed using linear, pseudo-linear and nonlinear methods. The pseudo-linear approach is based on the modified elastic modulus. The nonlinear analysis involves cable sag, large displacement and beam-column effects. The results confirm that both cable sag and large displacement originate the most important nonlinear effects in those structures. Beam-column effects are irrelevant for service loads. Both the pseudo-linear approach and the modified modulus element prove to be very limited or even inappropriate.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
A.M.S. Freire, J.H.O. Negrão, A.V. Lopes,