Effect of the Foundation-Base Interaction on the Dynamics of Metal Bridge Spans

Resumo

It is shown that the general dynamics factor governing strength calculations of metallic spans is determined by the soil conditions and particularities of the interaction between support foundations and bases. The influence of the soil conditions for transverse oscillations of bridges increases with increasing support height and decreasing deformation characteristics of the base. It is noted that in order to make span structures more earthquake-resistant the foundation can be developed without changing the elements of the span structure.