Steel-concrete composite highway bridges dynamic structural behaviour assessment considering the pavement progressive deterioration effect

Avaliação do comportamento estrutural dinâmico de pontes rodoviárias mistas (aço-concreto) considerando o efeito da deterioração progressiva do pavimento

abstract:

Highway bridges are usually subjected to random dynamic actions of variable magnitude due to vehicles convoys crossing on the bridge pavement deck along their service life. In this context, the asphalt pavement deteriorated road surface condition represents a key issue to assess the bridge displacement and stress values. This way, this research work aims to develop an analysis methodology in order to assess the dynamic structural behaviour of steel-concrete composite highway bridges including the vehicles convoys dynamic actions and the pavement progressive deterioration effect. The conclusions of this investigation have indicated that the displacements and stresses values are considerably higher, with relevant amplifications up to four times, when the road pavement deterioration effect is considered in the bridge dynamic analysis.

Keywords:
steel-concrete highway bridges; dynamic structural analysis; pavement progressive deterioration effect; finite element modelling