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Structural assessment and reliability analysis for existing engineering structures, applications for real structures

机译：现有工程结构的结构评估和可靠性分析，实际结构的应用

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摘要

A complex interdisciplinary approach to the reliability assessment of reinforced concrete structures is introduced and demonstrated on a real existing bridge structure. The reliability index of the structure decreases during its life cycle due to material degradation. A retrofitting to the desired reliability level should be performed. This procedure is modelled by advanced life-cycle computer simulation. The main feature of the presented approach is the nonlinear finite element analysis of the structure employed for the realistic assessment of structural behaviour. A suitable statistical sampling technique, which allows relatively small numbers of simulations, is used in this context. Different degradation scenarios are analysed concerning their effect on the structure's reliability progression. These studies give a basis for future models including analytical deterioration models combined with in situ monitoring, used to launch the degradation process. Finally the presented methodology for advanced life-cycle analysis is integrated in the innovative decision-making tool that supports the maintenance planning of engineering structures.
机译：介绍了一种复杂的跨学科方法，用于钢筋混凝土结构的可靠性评估，并在实际存在的桥梁结构上进行了演示。由于材料性能下降，结构的可靠性指标在其生命周期中会降低。应该进行翻新至所需的可靠性水平。此过程通过高级生命周期计算机仿真来建模。所提出的方法的主要特征是对结构进行非线性评估的结构的非线性有限元分析。在这种情况下，使用了一种合适的统计采样技术，该技术允许进行相对较少的模拟。分析了不同的退化方案对结构可靠性发展的影响。这些研究为将来的模型提供了基础，这些模型包括分析性退化模型和用于启动退化过程的原位监测。最后，所提出的用于高级生命周期分析的方法已集成到支持工程结构维护计划的创新决策工具中。

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