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2015 Impact Factor: 0.519 ©2015 Thomson Reuters, 2015 Journal Citation Report®

ISSN 1822-427X print
ISSN 1822-4288 online



"The Baltic Journal of Road and Bridge Engineering"
Vilnius: Technika, 2008, Vol III, No 3, p. 121–128.

Tatjana Grigorjeva, Algirdas Juozapaitis, Zenonas Kamaitis, Ainars Paeglitis

Finite Element Modelling For Static Behaviour Analysis of Suspension Bridges with Varying Rigidity of Main Cables

DOI: 10.3846/1822-427X.2008.3.121-128
The paper presents a summary of numerical analysis on static behaviour of suspension bridges with varying rigidity of cables. The primary purpose of this study was to compare suspension systems with flexible and rigid cables and to determine the influence of varying rigidity of cables on the response of bridge members under the action of uniformly distributed symmetrical and unsymmetrical static loading. The finite element analysis of a three-dimensional bridge model was performed. In the first model, the cable is modelled as TRUSS3D element, in the second model as BEAM3D element. In both models, the hangers and backstays are TRUSS3D elements and stiffening girder as BEAM3D element. It is shown that a suitable increase of main cable’s bending stiffness can effectively reduce the displacements, internal forces and stresses of suspension systems. Recommendations for appropriate stiffness are given.
Keywords: suspension bridges, flexible cables, rigid cables, FEM, displacements, moments and stresses.

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