01125580

Component

This paper is presented a modal analysis of a steel flexible shell structure made of corrugation plates which is a main load-carrying element in soil-steel bridge situated in Giman (Sweden). Comparison and parametrization were carried out on two calculation models: a plane (2D) one and a spatial (3D) one. The rigid connection between the steel shell elements and the articulated (hinged) joints employed in the foundation are notable features of the bridge structure. The numerical analysis was performed by means of a FEM based software package. Two kinds of finite elements were used: beam and shell ones. The natural frequencies of the bridge shell structure were compared by means of subspace and reverse iteration methods. The steel flexible shell model was parameterized taking into account the effect of the variable (because of joints) characteristics of its shell elements connected with a foundation on the eigenvalues under the deadweight. In addition, the optimum number of finite elements in the models and the convergence of the results depending on the number of iterations were estimated. Conclusions were drawn on the basis of analysis.

01120148

09-1251

English

13p

2009

Transportation Research Board 88th Annual Meeting

DVD

Photos; References (13) ; Tables (1)

Bridges; Corrugations (Defects); Finite element method; Shells (Structural forms); Steel plates; Structures

Deadweight losses; Load carrying capacity

Sweden

Bridges and other structures; Highways; I24: Design of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2009 Paper #09-1251

TRIS, TRB

Jan 30 2009 5:28PM