The Structural Engineer > Archive > Volume 62 (1984) > Issues > Issue 6 > Combination of Highway Loads and Temperature Difference Loads on Bridges
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Combination of Highway Loads and Temperature Difference Loads on Bridges

A review is presented of data concerning the occurrence of abnormally heavy highway loads and of severe temperature difference loading on bridges. The probabilities of these loads occurring simultaneously during the design life of a bridge are considered. It is concluded that there is a high probability of combined loading occurring on about 1% of UK trunk-road bridges during their design lives. The probability of the remaining trunk-road bridges experiencing combined loading during their design lives is about 3%. It is almost certain that severe temperature difference loading will occur under dead load conditions. Finally, reduced design loads, based on a nominal ‘permanent’ load, are suggested. J.G. Church and L.A. Clark