Numerical method for live load distribution in road bridges

Janusz  Hołowaty

Published: 2010-04-01

Vol. 9 No. 4 (2010)

Numerical method for live load distribution in road bridges

Janusz Hołowaty

Abstract

The paper presents the numerical method for computing the load distribution coefficients in bridge decks analysis. The grillage approach for representation of bridge decks is adopted for determination of general behaviour under traffic loads. The principles of Maxwell’s reciprocal theorem are developed in computing distribution coefficients and their influence lines. The presented method uses the approach developed in traditional methods of transversal load distribution but bridge decks are modelled more realistically using well-established grillage analogy. Any numerical program for grillage analysis can be used and no special software is needed. While computing the distribution coefficients for a bridge deck the rest of the analysis can be performed with ordinary procedures of structural mechanics.

Numerical method for live load distribution in road bridges

Abstract

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Janusz Hołowaty