Curved concrete crownwalls on vertical breakwaters under impulsive wave load: Finite Element Analysis

IF 4.5 2区工程技术 Q1 ENGINEERING, CIVIL

Coastal Engineering Pub Date : 2025-06-07 DOI:10.1016/j.coastaleng.2025.104791

Lára M. Gísladóttir , Myrta Castellino , Dimitrios Dermentzoglou , Max A.N. Hendriks , Paolo de Girolamo , Marcel R.A. van Gent , Alessandro Antonini

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引用次数: 0

Abstract

Curved concrete crownwalls are commonly installed on vertical breakwaters in deep water to mitigate wave overtopping. This study compares the hydraulic and structural performance of fully curved and recurved crownwalls under impulsive wave loads induced by non-breaking waves, known as Confined-Crest Impact. Using one-way coupled numerical simulations in OpenFOAM and structural analyses in DIANA FEA, we assess the pressure fields and structural responses of the two geometries. Results reveal that while the fully curved crownwall significantly reduces overtopping, it experiences wave forces up to 2.5 times greater than the recurved crownwall, along with longer pressure impulse durations, leading to amplified tensile stresses and higher risk of cracking. In contrast, the recurved crownwall, despite localized peak pressures, benefits from a broader cross-section and linear stress distribution, resulting in better structural performance. These findings underscore the importance of integrating dynamic structural analysis in crownwall design to balance hydraulic efficiency with structural resilience.

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波浪冲击荷载作用下垂直防波堤弯曲混凝土顶墙的有限元分析

弯曲混凝土顶墙通常安装在深水垂直防波堤上，以减轻波浪漫过。本研究比较了完全弯曲和弯曲的顶壁在非破碎波（即约束波峰冲击）诱导的脉冲波荷载下的水力和结构性能。利用OpenFOAM的单向耦合数值模拟和DIANA FEA的结构分析，我们评估了两种几何形状的压力场和结构响应。结果表明，虽然完全弯曲的顶壁可以显著减少过顶，但它承受的波浪力是弯曲顶壁的2.5倍，压力脉冲持续时间更长，导致拉应力放大，开裂风险更高。相比之下，弯曲的顶壁，尽管局部峰值压力，受益于更宽的截面和线性应力分布，从而获得更好的结构性能。这些发现强调了将动力结构分析整合到顶壁设计中以平衡水力效率和结构弹性的重要性。

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来源期刊

Coastal Engineering 工程技术-工程：大洋

CiteScore

9.20

自引率

13.60%

发文量

审稿时长

3.5 months

期刊介绍： Coastal Engineering is an international medium for coastal engineers and scientists. Combining practical applications with modern technological and scientific approaches, such as mathematical and numerical modelling, laboratory and field observations and experiments, it publishes fundamental studies as well as case studies on the following aspects of coastal, harbour and offshore engineering: waves, currents and sediment transport; coastal, estuarine and offshore morphology; technical and functional design of coastal and harbour structures; morphological and environmental impact of coastal, harbour and offshore structures.