Stability and Wave Transmission at Low‐Crested Rubble‐Mound Structures

TLDR

Low‑crested structures are classified as dynamically stable reef breakwaters, statically stable low‑crested structures above still‑water level, or statically stable submerged structures. This paper develops practical design formulas and graphs for the stability of each class and for predicting wave transmission based on crest height, width, wave height, and steepness. The authors reanalyzed global data sets to derive these design formulas. The reliability of each formula is described.

Abstract

Low‐crested structures can be classified in three categories: dynamically stable reef breakwaters, statically stable low‐crested structures with their crest above still‐water level (SWL), and statically stable submerged structures. This paper presents practical design formulas and graphs with respect to the stability for each of the three classes. In addition, formulas were developed to predict wave transmission over low‐crested rubble mound structures, taking into account the crest height and width, wave height and wave steepness. Most available data sets of various investigations from all over the world were reanalyzed in order to produce the design formulas. The reliability of each formula is described.