A comparative study of bridge traffic load effect using micro-simulation and Eurocode load models

Lipari, Alessandro; O’Brien, Eugene J.; Capriani, Colin C.

doi:10.1201/b12352-514

Cited by 12 publications

(7 citation statements)

References 20 publications

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“…However, while the adopted procedure may be fully used to output stress or stress resultants, such as bending moment [19,73], this requires the choice of a structural form for the bridges to be analysed. Since such forms may be quite different for long spans, the use of the total load is adopted here to maintain the generality of the study.…”

Section: Introductionmentioning

confidence: 99%

Micro-simulation of single-lane traffic to identify critical loading conditions for long-span bridges

O’Brien

Lipari

Caprani

2015

Engineering Structures

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Section: Introductionmentioning

confidence: 99%

Micro-simulation of single-lane traffic to identify critical loading conditions for long-span bridges

O’Brien

Lipari

Caprani

2015

Engineering Structures

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“…Depending on the specific structure and maintenance strategy, the bridge owner and engineer must choose a suitable return period for safety verification. In the case of medium-term examination, a return period of 75 years is considered reasonable, as other recent European research has used (Lipari, O'Brien, & Caprani, 2012), and will be used as an input parameter for this work. The notion of degree of compliance, n, is introduced for deterministic verification of the structural safety in the Swiss standards for existing structures (Brühwiler, Vogel, Lang, & Lüchinger, 2012) and is given by:…”

Section: Code-based Approaches For Safety Verificationmentioning

confidence: 99%

Monitoring of traffic action local effects in highway bridge deck slabs and the influence of measurement duration on extreme value estimates

Treacy

Brühwiler

Caprani

2013

Structure and Infrastructure Engineering

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In recent years, monitoring has offered a viable complement or even alternative to traditional analytical safety verification approaches. However, there still remains a lack of guidance for the use of monitored data in safety verification work. Limited resources often necessitate relatively short time frames for safety verification of problematic bridges. While the duration of monitoring is always an important consideration, it is rarely examined explicitly in terms of its influence on the predicted characteristic action effects. This work gives a novel approach for determining if a monitoring regime is sufficiently long to obtain a reliable extreme value estimate of the action effect. A case study of a highway bridge in Switzerland, with one year of continuous high-frequency measurements, is used to exemplify the approaches developed. The focus is on direct measurement of the traffic action effects in the bridge's deck slab reinforcement. A comprehensive statistical approach for determination of site-specific, element-specific extreme traffic action effects is presented.

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“…In order to highlight the influence of several traffic features on bridge loading, a simplified vehicle stream made up of two classes of vehicle, cars and trucks, is used with the parameters shown in Table 4. Real sites are likely to have a more complex traffic stream, but site-specific traffic data could be equally introduced [87].…”

Section: Application Of Microsimulation To Bridge Loadingmentioning

confidence: 99%

“…National Annexes may extend the span limit of application of LM1. For instance, the UK National Annex extends its application up to 1500 m. Again, LM1 may be significantly reduced when using site-specific traffic data, with traffic microsimulation used to replicate congestion events [87].…”

Section: Main Codesmentioning

confidence: 99%

Highway Bridge Traffic Loading

Lipari¹

2016

Structural Bridge Engineering

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In this chapter, traditional approaches and recent advances in highway bridge traffic loading are described, which are of great significance for structural safety assessment of bridges. Indeed, it is widely accepted that consideration of site-specific traffic features can enable significant savings in maintenance operations. While short spans are governed by free-flowing traffic plus an allowance for the dynamic effects, long spans are governed by congested conditions. For the former, a promising research trend is the investigation of the dynamic vehicle-bridge interaction, which is shown to lead to dynamic effects much lower than previously thought. For the latter, advances in traffic flow modelling enable the simulation of realistic congestion patterns based on widely available free-flowing traffic data, thus partially overcoming a long-standing shortage of congestion data. Here, emphasis is given to the promising application of traffic microsimulation to long-span bridge loading, combined with a probabilistic approach based on the extreme value theory, to compute site-specific characteristic loading values.

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A comparative study of bridge traffic load effect using micro-simulation and Eurocode load models

Cited by 12 publications

References 20 publications

Micro-simulation of single-lane traffic to identify critical loading conditions for long-span bridges

Micro-simulation of single-lane traffic to identify critical loading conditions for long-span bridges

Monitoring of traffic action local effects in highway bridge deck slabs and the influence of measurement duration on extreme value estimates

Highway Bridge Traffic Loading

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