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Browsing by Author "González, Arturo"

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Assessment dynamic ratio for traffic loading on highway bridges

Caprani, Colin C. ; González, Arturo ; Rattigan, Paraic ; O'Brien, Eugene J. (Taylor & Francis, 2011-11-28)

The determination of characteristic bridge load effect is a complex problem. Usually, statistical extrapolation of simulated static load effects is used to derive a lifetime characteristic static load effect. However, ...
Assessment of the condition of a beam using a static loading test

Walsh, Brian J. ; González, Arturo (Trans Tech Publications Inc., 2009-05)

This paper presents a novel approach for structural damage detection. The cross-entropy method is used to estimate the structural parameters of a simply supported beam from its response to a static load consisting of a ...
An Assessment of the Influence of Dynamic Interaction Modelling on Predicted Characteristic Load Effects in Bridges

González, Arturo ; O'Connor, Alan ; O'Brien, Eugene J. (Thomas Telford, 2003)

Traffic loading crossing a bridge is simulated to analyse the correlation between the worst static and dynamic load case. The worst static cases are obtained through a Monte-Carlo simulation using weigh-in-motion (WIM) ...
Bridge roughness index as an indicator of bridge dynamic amplification

O'Brien, Eugene J. ; Li, Yingyan ; González, Arturo (Elsevier, 2006-05)

The concept of a road roughness index for bridge dynamics is developed. The International Roughness Index (IRI) is shown to be very poorly correlated with bridge dynamic amplification as it takes no account of the location ...
Characterisation of pavement profile heights using accelerometer readings and a combinatorial optimisation technique

Harris, Niall K. ; González, Arturo ; O'Brien, Eugene J. ; McGetrick, P. (Elsevier, 2010-03)

Pavement surface profiles induce dynamic ride responses in vehicles which can potentially be used to classify road surface roughness. A novel method is proposed for the characterisation of pavement roughness through an ...
Characteristic Dynamic Increment for Extreme Traffic Loading Events on Short and Medium Span Highway Bridges

O'Brien, Eugene J. ; Cantero, Daniel ; Enright, Bernard ; González, Arturo (Elsevier, 2010-12)

More accurate assessment of safety can prevent unnecessary repair or replacement of existing bridges which in turn can result in great cost savings at network level. The allowance for dynamics is a significant component ...
Characteristic dynamic traffic load effects in bridges

O'Brien, Eugene J. ; Rattigan, Paraic ; González, Arturo ; Dowling, Jason ; Znidaric, Ales (Elsevier, 2009-07)

When formulating an approach to assess bridge traffic loading with allowance for Vehicle-Bridge Interaction (VBI), a trade-off is necessary between the limited accuracy and computational demands of numerical models and the ...
Critical speed for the dynamics of truck events on bridges with a smooth road surface

González, Arturo ; O'Brien, Eugene J. ; Cantero, Daniel ; Li, Yingyan ; Dowling, Jason ; Znidaric, Ales (Elsevier, 2010-05-24)

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 ...
Detection of Bridge Dynamic Parameters Using an Instrumented Vehicle

González, Arturo ; O'Brien, Eugene J. ; McGetrick, P. (World Conference on Structural Control and Monitoring, 2010)

Highway structures such as bridges are subject to continuous degradation primarily due to ageing and environmental factors. A rational transport policy requires the monitoring of this transport infrastructure to provide ...
Determination of bridge lifetime dynamic amplification factor using finite element analysis of critical loading scenarios

González, Arturo ; Rattigan, Paraic ; O'Brien, Eugene J. ; Caprani, Colin C. (Elsevier, 2008-09)

The development of accurate codes for the design of bridges and the evaluation of existing structures requires adequate assessment of heavy traffic loading and also the dynamic interaction that may occur as this traffic ...
The development of a dynamic amplification estimator for bridges with good road profiles

Li, Yingyan ; O'Brien, Eugene J. ; González, Arturo (Elsevier, 2006-05)

The paper considers the influence of the surface profile on the dynamic amplification of a simply supported bridge when subject to a quarter car vehicle model. The effect of the profile irregularities on the bridge dynamic ...
Dynamic Amplification Factors for Bridges with Various Boundary Conditions

Carey, Ciaran ; O'Brien, Eugene J. ; González, Arturo (BCRI, 2010-09)

It is important that the assessment of bridges be as accurate as possible. Dynamic amplification is one area in which the codes are sometimes overly conservative. Bridge dynamics is well researched but the majority of ...
Dynamic increment for shear force due to heavy vehicles crossing a highway bridge

González, Arturo ; Cantero, Daniel ; O'Brien, Eugene J. (Elsevier, 2011-12)

Most of the current research on dynamic amplification factors caused by traffic flow on a bridge has focused on bending moment effects. Although bending stresses often govern the requirements of the bridge section, sufficient ...
Experimental determination of dynamic allowance for traffic loading in bridges

González, Arturo ; Dowling, Jason ; O'Brien, Eugene J. ; Znidaric, Ales (Transportation Research Board, 2010)

Bridge codes adopt values for dynamic allowance in traffic load models that are necessarily conservative to cover for an entire range of bridges with different mechanical characteristics, boundary conditions, and the ...
A filtered measured influence line approach to bridge weigh-in-motion

O'Brien, Eugene J. ; González, Arturo ; Dowling, Jason (Taylor & Francis (Routledge), 2010-07-11)

In Bridge Weigh-in-Motion (B-WIM), an instrumented bridge is used as a scales to weigh passing trucks and their axles. The most common algorithm upon which modern B-WIM systems are based remains that developed by Moses ...
Finite Element Model Updating Using Cross-Entrophy

Dowling, Jason ; González, Arturo ; O'Brien, Eugene J. ; Walsh, Brian J. (BCRI, 2010)

This paper presents the potential of the cross-entropy method to surmise the properties of a simply supported beam using as input the response of the structure to a moving load. The beam model is discretised into a number ...
A general solution to the identification of moving vehicle forces on a bridge

González, Arturo ; Rowley, C. ; O'Brien, Eugene J. (Wiley, 2008-07)

Bridge Weigh-In-Motion systems measure bridge strain caused by the passing of a truck to estimate static axle weights. For this calculation, they commonly use a static algorithm that takes the bridge influence line as ...
Identification of Road Irregularities via Vehicle Accelerations

O'Brien, Eugene J. ; McGetrick, P. ; González, Arturo (2010)

A periodic monitoring of the pavement condition facilitates a cost-effective distribution of the resources available for maintenance of the road infrastructure network. The task can be accurately carried out using ...
The Impact of a Bump on the Response of a Bridge to Traffic

González, Arturo ; Cantero, Daniel ; O'Brien, Eugene J. (Civil-Comp Ltd, 2009-09-01)

There are numerous studies on the dynamic amplification factors caused by traffic flow on a bridge. For short- and medium-span bridges, the road profile appears as a dominant parameter on the bridge dynamic response. In ...
The influence of pre-existing vibrations on the dynamic response of medium span bridges

Rattigan, Paraic ; González, Arturo ; O'Brien, Eugene J. (NRC Research Press / Presses scientifiques du CNRC, 2009-01)

Critical static bridge loading scenarios are often expressed in terms of the number of vehicles that are present on the bridge at the time of occurrence of maximum lifetime load effect. For example, 1-truck, 2-truck, 3-truck ...