Type

Journal Article

Authors

Colin C. Caprani
Eugene J. O'Brien
Paraic Rattigan
Arturo González

Subjects

Engineering

Topics
statistics loads mechanics mathematical models bridges live loads mathematical models bridge loading finite element modelling traffic

Determination of bridge lifetime dynamic amplification factor using finite element analysis of critical loading scenarios (2008)

Abstract The development of accurate codes for the design of bridges and the evaluation ofexisting structures requires adequate assessment of heavy traffic loading and also the dynamic interaction that may occur as this traffic traverses the structure. Currentapproaches generally first calculate characteristic static load effect and then apply an amplification factor to allow for dynamics. This neglects the significantly-reduced probability of both high static loading and high dynamic amplification occurring simultaneously. This paper presents an assessment procedure whereby only criticalloading events are considered to allow for an efficient and accurate determination ofindependent values for characteristic (lifetime-maximum) static and total (including dynamic interaction) load effects. Initially the critical static loading scenarios for a chosen bridge are determined from Monte Carlo simulation using weigh-in-motion data. The development of a database of 3-dimensional finite element bridge and truck models allows for the analysis of these various combinations of vehicular loading patterns. The identified critical loading scenarios are modelled and analysed individually to obtain the critical total load effect. It is then possible to obtain a correlation between critical staticload effect and corresponding total load effect and to extrapolate to find a site-specific dynamic amplification factor.
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

Colin C. Caprani, Eugene J. O'Brien, Paraic Rattigan, Arturo González

Experts in our system

1
Colin C. Caprani
University College Dublin
Total Publications: 42
 
2
Eugene J. O'Brien
University College Dublin
Total Publications: 192
 
3
Arturo González
University College Dublin
Total Publications: 106