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Probability-based bridge assessment

机译：基于概率的桥梁评估

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摘要

This paper describes the application of the newly developed Danish guideline for probability-based assessment of bridges to a beam and slab bridge that was built in 1935 and is located outside Copenhagen. The guideline, published by the Danish Roads Directorate in 2004, reflects a commitment to consider probability-based assessment for all bridge structures that have failed a deterministic assessment. For the structure analysed, modelling of the critical limit states is presented as are the statistical techniques employed in modelling the loads and resistances. The overall aim of the analysis was to achieve a higher load rating for the structure than that resulting from a traditional deterministic analysis. Ultimately the cost benefits to bridge owners/managers of performing a probabilistic assessment are apparent from the results, which provide a higher load rating for the bridge than were achieved through deterministic assessment. Although the guideline is intended to be applied in probability-based assessment of Danish bridges it is anticipated that it could equally be applied in other countries.
机译：本文介绍了新开发的丹麦指南在基于概率的桥梁到平板桥的评估中的应用，该桥梁建于1935年，位于哥本哈根市郊。该指南由丹麦道路管理局于2004年发布，反映了对所有未通过确定性评估的桥梁结构考虑基于概率的评估的承诺。对于所分析的结构，提出了极限极限状态的建模，以及在建模负载和阻力时所采用的统计技术。该分析的总体目标是要实现比传统确定性分析更高的结构额定载荷。最终，从结果中可以明显看出，桥梁所有者/经理进行概率评估的成本收益，与确定性评估相比，桥梁的额定载荷更高。尽管该指南旨在应用于丹麦桥梁的基于概率的评估，但可以预期该指南也可以同样地应用于其他国家。

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