Wave-induced pressures in porous bonded revetments. Part I: Pressures on the revetment

Wave-induced pressures in porous bonded revetments. Part I: Pressures on the revetment
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多孔粘结护岸中波浪引起的压力第一部分:护岸上的压力

DOI:
10.1016/j.coastaleng.2016.01.008
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发表时间:
2016
影响因子:
4.4
通讯作者:
Oumeraci
Oumeraci
中科院分区:
工程技术1区
文献类型:
--
作者:
Alcerreca-Huerta;Oumeraci

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由聚氨酯粘结骨料(PBA)制成的护岸是最近减轻海岸侵蚀的替代方案。基于大规模实验室测试(Oumeraci et al., 2010)和CFD建模(Foyer and Oumeraci, 2013),之前的研究显示了它们相对于传统防渗护岸的优势。后者是用来描述波浪-结构与PBA护岸相互作用所涉及的水动力和水文-岩土过程。然而,所产生的数据并不能完全描述护岸的波浪荷载和下面土壤的反应;因此,采用计算流体动力学-计算固体动力学(CFD-CSD)模型系统进行了综合参数研究。本文(第一部分)侧重于护岸上的波浪诱导压力,而配套论文(第二部分)描述了护岸下方和路堤底土中的孔隙压力发展。在第一部分中,讨论了以下问题:(i)介绍了数值参数研究和用于波浪诱导压力建模的CFD-CSD模型;(ii)简要回顾波浪荷载的分类和参数化,以确定波浪压力分析的要素和符号;(iii)分析波峰压力大小、波峰在护岸上的位置和空间压力分布;(四)基于问题三的分析结果,开发预测公式。最后,对主要研究结果进行了总结,并给出了结论,包括对工程应用和进一步研究的启示和建议。
Revetments made of polyurethane bonded aggregates (PBA) are a recent alternative to mitigate coastal erosion. Their advantages over conventional impermeable revetments are shown in previous studies, based on large-scale laboratory tests (Oumeraci et al., 2010) and CFD modelling (Foyer and Oumeraci, 2013). The latter were conducted to describe the hydrodynamic and hydro-geotechnical processes involved in the wave–structure interaction with PBA revetments. However, the data generated did not allow a full description of the wave-induced loading of the revetment and the response of the underlying soil; therefore, a comprehensive parameter study with a computational fluids dynamics–computational solid dynamics (CFD–CSD) model system was performed. This paper (Part I) focuses on the wave-induced pressures on the revetment, while a companion paper (Part II) describes the pore pressure development just beneath the revetment and in the embankment subsoil. In this first part, the following issues are addressed: (i) introduction to the numerical parameter study and the CFD–CSD model used for the modelling of the wave-induced pressures; (ii) brief review of the wave load classification and parameterization to define the elements and notations for the wave-induced pressure analysis; (iii) analysis of the peak pressure magnitude, its location on the revetment, and the spatial pressure distribution; and (iv) the development of prediction formulae, based on the results of the analysis in issue iii. Finally, a summary of the key results and concluding remarks are provided, including the implications and recommendations for engineering applications as well as for further research.
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