This paper presents a simplified parametric model for the estimation of depth-limited hurricane wave spectra, accounting for swell and wind-sea components, for coastal engineering applications. The model was evaluated against observations obtained from three shallow water sites in Florida during Hurricane David in September 1979. It was revealed that the parametric approach increases in accuracy with decreasing distance to the storm center and generally provides a conservative representation of the significant wave height, albeit overestimating the peak wave frequency. The model was subsequently adopted to evaluate the performance of tilted hyperbolic paraboloidal (hypar) shells (referred to as “kinetic umbrellas”) as an adaptable alternative to conventional floodwalls via smoothed particle hydrodynamics (SPH). The introduction of hypar geometry proved superior to conventional sloped barriers in reducing overtopping waves but decreases in effectiveness at levels of inundation greater than two-thirds the deployed height. Furthermore, umbrellas exhibiting larger geometrical warping were more capable at suppressing overtopping but must sustain larger base shear forces when subjected to irregular waves consistent with landfalling hurricanes.

中文翻译：

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飓风条件下深度限制波谱的参数化建模及其在防暴浪潮淹没的动力伞中的应用

本文提出了一种简化的参数模型，用于估计深度受限的飓风波谱，考虑了潮汐和风海成分，适用于沿海工程应用。该模型是根据1979年9月戴维飓风期间在佛罗里达州的三个浅水站点获得的观测值进行评估的。该结果表明，参数方法的准确性随着距风暴中心距离的减小而提高，并且通常提供了重要波高的保守表示，尽管高估了峰值波频率。随后采用该模型来评估倾斜双曲线抛物面（hypar）壳（称为“动力伞”）的性能，以通过平滑粒子流体动力学（SPH）替代常规防洪墙。hypar几何形状的引入在减少越过波浪方面优于传统的倾斜屏障，但在淹没水平大于展开高度的三分之二时，有效性降低。此外，表现出较大几何翘曲的雨伞更能抑制超车，但当受到与登陆飓风相符的不规则波时，必须承受较大的基础剪力。