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Probabilistic analysis of flood embankment stability: the case study of the Adige River embankment in Italy

机译:洪水堤防稳定性概率分析 - 以意大利迪杰河堤对策

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摘要

Flooding is a worldwide phenomenon. Over the last few decades the world has experienced a rising number of devastating flood events and the trend in such natural disasters is increasing. Furthermore, escalations in both the probability and magnitude of flood hazards are expected as a result of climate change. Flood defence embankments are one of the major flood defence measures and stability assessment for these structures is therefore a very important process. Traditional deterministic approaches to stability analysis do not allow taking into account and quantifying the uncertainties in soil characterisation. For this reason they may not be sufficient to capture the failure of flood embankments. The paper presents a probabilistic approach for the stability analysis of flood embankments taking into account the probabilistic distribution of soil hydro-mechanical properties. The approach is validated against the failure case study of the Adige river embankment in Italy, by comparing the probability of failure of two sections, within and outside the failure segment respectively.
机译:洪水是全球现象。在过去的几十年里,世界经历了毁灭性的洪水事件数量上升,这种自然灾害的趋势正在增加。此外,由于气候变化,预期洪水危险概率和幅度的升级。洪水防御堤是这些结构的主要防洪措施和稳定性评估之一,因此是一个非常重要的过程。传统的稳定性分析方法不允许考虑并量化土壤表征中的不确定性。因此,它们可能不足以捕获洪水堤的失败。本文介绍了洪水堤防稳定性分析的概率方法,以考虑土壤水力力学性能的概率分布。通过比较分别的两个部分,在故障段内外的概率,验证了意大利Adige河堤的失败案例研究。

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