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

  title={Micro-simulation of single-lane traffic to identify critical loading conditions for long-span bridges},
  author={Eugene J. O'brien and Alessandro Lipari and Colin C. Caprani},
  journal={Engineering Structures},

Figures and Tables from this paper

Identifying Critical Clusters of Traffic-Loading Events in Recurrent Congested Conditions on a Long-Span Road Bridge

A comparison of the maximum hourly/daily MTHF load effect of the cable force for five notional bridges shows that a 100% increase in the bridge span generates an increase of about 65% in the characteristic load effect.

Highway Bridge Traffic Loading

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.

A pseudo-microsimulation approach for modelling congested traffic loading on long-span bridges

Abstract This paper investigates congested traffic loading on long-span bridges through the use of traffic microsimulation. Six months of Weigh-In-Motion free-flow traffic data (including cars) are

Lifetime Deflections of Long-Span Bridges under Dynamic and Growing Traffic Loads

Steady traffic growth may pose a safety hazard to in-service bridges, especially long-span bridges subjected to the simultaneous presence of multiple heavy-duty trucks. This study presents a

An efficient approach for traffic load modelling of long span bridges

It is shown that the multi-scale modelling approach proposed here achieves high computational efficiency and accuracy, which is significant for the massive traffic load simulation for lifetime bridge load effect analysis.

Extreme value modeling of coincident lane load effects for multi-lane factors of bridges using peaks-over-threshold method

This study aims to adopt the peaks-over-threshold (POT) method to obtain more information from short-term traffic data and model the extreme coincident lane load effects (LLEs) for multi-coefficient MLF calibration of bridge assessment with short- term site-specific traffic data.



The use of micro-simulation for congested traffic load modeling of medium- and long-span bridges

This paper presents a new approach to the modelling of congested traffic loading events on long span bridges. Conventional traffic load models are based on Weigh- In-Motion data of non-congested

Calibration of a Congestion Load Model for Highway Bridges Using Traffic Microsimulation

The calibration of a congested traffic load model using traffic microsimulation is presented, and it is found that the calibrated gaps are either similar to, or are larger than, previous work in the area.

Lane Changing Control to Reduce Traffic Load Effect on Long-Span Bridges

It is shown that restriction of lane changing is an effective means of reducing long-span bridge traffic load effect and may assist bridge owners in implementing measures to prolong the life of existing infrastructure.

Stochastic Vehicle‐Queue‐Load Model for Large Bridges

For long‐span bridges, the traffic load can be modeled as white‐noise‐load fields along the lanes. The mean and the intensity of the white‐noise field depend on the traffic situation. Theoretical

Determination of Minimum Gap in Congested Traffic

Accurate evaluation of site-specific loading can lead to cost and material savings in rehabilitation and replacement of bridges. Currently, bridge traffic load assessment is carried out using long


The results of a study are described which aimed at the derivation of a traffic load model for the design of road bridges. Attention is given to the Ultimate Limit State, the Serviceability Limit

Lifetime Highway Bridge Traffic Load Effect from a Combination of Traffic States Allowing for Dynamic Amplification

Recent research has shown that the dynamic amplification factor (DAF) to be applied to free-flowing traffic-induced load effect may not be as high as previously thought. Therefore, congested traffic

Modeling stochastic live load for long-span bridge based on microscopic traffic flow simulation

Live Load Models for Long Span Bridges

In the dissertation a live load model for long span structures was derived. The live load model is valid for spans between 600 ft. and 5000 ft. and it is intended to reflect current traffic patterns,

Congested traffic states in empirical observations and microscopic simulations

  • TreiberHenneckeHelbing
  • Physics
    Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
  • 2000
It is shown that the results of the microscopic model can be understood by formulating the theoretical phase diagram for bottlenecks in a more general way, and a local drop of the road capacity induced by parameter variations has essentially the same effect as an on-ramp.