Dissertation/ Thesis
Reliability of structures exposed to traffic and environmental loads ; Fiabilité de structures soumises aux actions du trafic et aux sollicitations naturelles
| العنوان: | Reliability of structures exposed to traffic and environmental loads ; Fiabilité de structures soumises aux actions du trafic et aux sollicitations naturelles |
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| المؤلفون: | Nesterova, Mariia |
| المساهمون: | Expérimentation et modélisation pour le génie civil et urbain (IFSTTAR/MAST/EMGCU), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Communauté Université Paris-Est, Université Paris-Est, Christian Soize |
| المصدر: | https://hal.science/tel-02438396 ; Civil Engineering. Université Paris-Est, 2019. English. ⟨NNT : 2019PESC2056⟩. |
| بيانات النشر: | CCSD |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Reliability, Bridge, Traffic actions, Wind actions, Fatigue, Extreme load effects, Fiabilité, Pont, Charges du trafic, Charges du vent, Effets extrêmes, [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering |
| الوصف: | The Thesis is dedicated to reliability analysis of the deck of Millau viaduct, a cable-stayed bridge located in Southern France. The main interest is the extrapolation in time of loads and load effects affecting the bridge in order to observe the reliability of chosen elements during the operational life of the structure. Millau viaduct is a complex unique bridge of French road infrastructure in the early stage of its life. It is important to be able to predict possible extreme loads on the deck of the bridge due to traffic growing in volume or weight. Such predictions require data from monitored actions or load effects in elements of the bridge. Large-scale structures need an enormous amount of data, that is not easy to obtain, to store and to analyze. It leads to another challenge - predictions based on limited time and accessible monitoring data.In the current work, predictions for traffic loads are done using provided data from bridge Weigh-in-Motion (BWIM) traffic monitoring for the case of the the ultimate limit state (ULS). For load extrapolation in time, several methods of Extreme Value Theory (EVT) are compared, with the most attention to the Peaks Over Threshold (POT) approach. Moreover, a contribution to existing methods for threshold choice, as the main challenge of POT approach, is made.In large cable-stayed bridges, not necessarily traffic is the leading action, but environment loads can have similar or superior effect. The focus of this work is on the deck of Millau viaduct, therefore, static wind loads obtained from structural health monitoring (SHM) of the viaduct are considered in combination with queues of traffic lorries. A probabilistic model is made to observe probabilities of extreme cases for both actions and their combination. As well, the influence of monitoring duration on confidence intervals for return levels of loads is studied.For the steel orthotropic deck of the bridge, both, local effects caused by passing vehicles and global effects, contribute to values of stresses. Global ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| Relation: | NNT: 2019PESC2056 |
| الاتاحة: | https://hal.science/tel-02438396 https://hal.science/tel-02438396v3/document https://hal.science/tel-02438396v3/file/doc00031214.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.BDFD477F |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |