Traffic load modelling and factors influencing the accuracy of predicted extremes

@article{OConnor2005TrafficLM,
  title={Traffic load modelling and factors influencing the accuracy of predicted extremes},
  author={A. O'Connor and E. O'brien},
  journal={Canadian Journal of Civil Engineering},
  year={2005},
  volume={32},
  pages={270-278}
}
Design and assessment of highway bridges requires accurate prediction of the extreme load effects expected during the proposed or remaining life of the structure. Traditionally these effects are calculated using conservative codified deterministic loading models. While this conservatism is relatively insignificant in design, it may be critical in assessment. Advances in weigh-in-motion (WIM) technology, i.e., the process of weighing trucks travelling at full highway speeds, have increased the… Expand

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References

SHOWING 1-10 OF 61 REFERENCES
A STATISTICAL APPROACH TO TRAFFIC LOADING ON HIGHWAY BRIDGES
A study of the structural effects caused by traffic loading on highway bridges is presented. The objective is to provide guidance for the selection and calibration of the highway live loads, whichExpand
Live load model for highway bridges
Abstract Load models are developed for highway bridges. The models are based on the available statistical data on dead load, truck loads and dynamic loads. The paper deals mostly with the static liveExpand
TRAFFIC LOADS ON BRIDGES
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 LimitExpand
Report of Current Studies Performed on Normal Load Model of EC1
TLDR
Results are given of some new studies performed to validate the european road traffic load model proposed by the Eurocode EC1, which has developed greatly in the last ten years and confidence in the accuracy of recorded data has increased significantly. Expand
Load model for bridge design code
The paper deals with the development of load model for the Ontario Highway Bridge Design Code. Three components of dead load are considered: weight of factory-made elements, weight of cast-in-placeExpand
Development of loading-truck model and live-load factor for the Canadian Standards Association CSA-S6 code
Studies have shown that the MS-200 loading model in the Canadian Standards Association standard CAN3-S6-M78 for design of highway bridges no longer represents modern-day heavy trucks in Canada. ForExpand
THE ACCURACY OF BRIDGE WEIGH-IN-MOTION SYSTEMS FOR THE DETERMINATION OF TRUCK WEIGHTS
This paper examines the accuracy of a bridge Weigh-in-Motion system for the determination of truck weights and the sensitivity of such a system to many factors. The factors influencing accuracy whichExpand
Probabilistic Traffic Load Models and Extreme Loads on a Bridge
This paper contains a summary of the intensive traffic measurements collected in France and Europe, and of the probabilistic distributions adopted for the main parameters. The evaluation of theExpand
Experience with Probabilistic-based Assessment of Bridges
This paper describes the practical experience from probabilistic-based assessment of bridges in Denmark and Sweden. The methodology is based on an individual approach for bridge safety assessmentExpand
SEASONAL PATTERNS OF TRUCK LOADS AND VOLUMES IN THE UNITED STATES
This paper presents the preliminary results of an analysis of the seasonal patterns for different vehicle classes in different states, regions, and roadways in the United States. The paperExpand
...
1
2
3
4
5
...