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Title: Geometrical nonlinearities on the static analysis of highly flexible steel cable-stayed bridges
Authors: Freire, A. M. S. 
Negrão, J. H. O. 
Lopes, A. V. 
Keywords: Cable-stayed bridges; Nonlinear analysis; Large displacements; Beam-column; Cable sagging
Issue Date: 2006
Citation: Computers & Structures. 84:31-32 (2006) 2128-2140
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.
Rights: openAccess
Appears in Collections:FCTUC Eng.Civil - Artigos em Revistas Internacionais

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