Geometrical nonlinearities on the static analysis of highly flexible steel cable-stayed bridges
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....
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| Outros Autores: | , |
| Formato: | article |
| Idioma: | eng |
| Publicado em: |
2006
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| Assuntos: | |
| Texto completo: | http://hdl.handle.net/10316/3967 |
| País: | Portugal |
| Oai: | oai:estudogeral.sib.uc.pt:10316/3967 |
| Resumo: | 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. |
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