Type

Journal Article

Authors

Ales Znidaric
Jason Dowling
Yingyan Li
Daniel Cantero
Eugene J. O'Brien
Arturo González

Subjects

Engineering

Topics
bridges live loads mathematical models bridge loads highway bridges dynamic amplification traffic speed structural dynamics critical speed three dimensional

Critical speed for the dynamics of truck events on bridges with a smooth road surface (2010)

Abstract Simple numerical models of point loads are used to represent single and multiple vehicle events on two-lane bridges with a good road profile. While such models are insufficiently complex to calculate dynamic amplification accurately, they are presented here to provide an understanding of the influence of speed and distance between vehicles on the bridge dynamic response. Critical combinations of speed as a function of main bridge natural frequency and meeting point of two vehicles travelling in opposite directions are identified. It is proposed that such simple models can be used to estimate the pattern of critical speeds versus dynamic amplification for heavy trucks on a bridge with a relatively smooth surface. The crossing of a three-dimensional spring-dashpot truck is simulated over a bridge plate model to test this hypothesis for a range of road roughness. Further validation is carried out using the site-specific mean pattern associated to field measurements due to the passage of a truck population. The latter is found to be closely resembled by the theoretical pattern derived from simple point load models.
Collections Ireland -> University College Dublin -> Critical Infrastructure Group Research Collection
Ireland -> University College Dublin -> Interdisciplinary Centres & Research Groups
Ireland -> University College Dublin -> Civil Engineering Research Collection
Ireland -> University College Dublin -> College of Engineering & Architecture
Ireland -> University College Dublin -> Critical Infrastructure Group
Ireland -> University College Dublin -> School of Civil Engineering

Full list of authors on original publication

Ales Znidaric, Jason Dowling, Yingyan Li, Daniel Cantero, Eugene J. O'Brien, Arturo González

Experts in our system

1
Ales Znidaric
University College Dublin
Total Publications: 12
 
2
Daniel Cantero
University College Dublin
Total Publications: 23
 
3
Eugene J. O'Brien
University College Dublin
Total Publications: 192
 
4
Arturo González
University College Dublin
Total Publications: 106