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  • Assets4Rail [Elektronski vir] : Deliverable 3.2 : Section-specific fatigue load models: method and application
    Anžlin, Andrej, gradbenik ...
    Fatigue consumption of structural components is given by train load histories and structural response. In this document the work of Task 3.2 is presented and a concept for estimation of load ... histories is proposed. The assessment of real axle loads of trains is presented, with the aim of determination of structural components fatigue consumption. Available traffic management data, wayside monitoring data and bridge-weigh-in-motion (B-WIM) data are utilized to estimate load histories. In this way the more accurate estimation of the remaining fatigue lifetime of bridges can be performed. With such estimation of load histories, a full-probabilistic fatigue evaluation can be utilized, updating existing deterministic methods in structural codes like the Eurocode EN 1991-2. The concept for the assessment of the current rail traffic is presented in Chapter 5. It is based on six different levels of data knowledge the first being the most simple and the sixth being the most comprehensive or sophisticated level of detail where dynamic axle forces of trains are known. The wayside monitoring was performed on Austrian railways, just few meters before the steel railway bridge, where bridge weigh-in-motion measurements were performed. The results of the field tests and comprehensive analysis are presented in the chapters 5.2 and 5.3 respectively. Better results were obtained by considering the 2-parameter soil model for the wayside monitoring data, whereas temperature and speed compensation of B-WIM data had to be considered in order to improve the accuracy of the train weighting. Approaches for estimating the current rail traffic when knowledge level is low are presented in Chapter 5.4. Just before the Conclusions (Chapter 6) an approach for assessing the rail traffic in the past is presented.
    Type of material - research report ; adult, serious
    Publication and manufacture - Ljubljana : Slovenian National Building and Civil Engineering Institute, 2021
    Language - english
    COBISS.SI-ID - 100603139

    Link(s):

    http://www.assets4rail.eu/wp-content/uploads/2021/12/A4R-D3.2.pdf

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