engleski

Security aspects of vertical actions on bridge structure: Comparison of earthquake and vehicle induced dynamical forces

Vehicles with ever increasing mass and speed characterize modern transport and their influence on forces in bridges cannot be realistically assessed using static approach only. Dynamic analysis that takes into account vehicle speed in some cases gives considerably greater forces in bridge structure. The idea advocated in this paper is to take vehicle dynamics into account when determining vertical actions on bridge structures and compare it with another vertical dynamic action, which is commonly present vertical earthquake analysis. It was hoped that one of them should not necessarily be considered for all types of bridges but it turned out that it is not easy to determine in advance when are actions from vehicle dynamics comparable to or greater than those of an earthquake analysis.

Bridges; Force measurement; Loading (physics); Seismic loading

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