TOE STABILITY OF RUBBLE MOUND BREAKWATERS

Proceedings of the International Conference on Coastal Engineering

Ivo van der Werf¹  Marcel van Gent¹ 

[1] Deltares, Delft, The Netherlands

关键词: coastal structures;    breakwaters;    toe structures;    toe blocks;    rock slopes;    cubes;    physical model tests;    design formula;   

DOI  :  10.9753/icce.v34.structures.22

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The toe of rubble mound structures is important since toe structures need to provide support to the armour layer and prevent scour to occur directly beneath the armour layer. In Van Gent and Van der Werf (2014) an expression for the prediction of the required stone size in toe structures has been derived. This prediction formula was derived for toe structures that consist of rock in combination with rock slopes. Additional tests have been performed a) to analyse the influence of the slope of the rock armour layer, b) to analyse the influence of the roughness of the armour layer, and c) to analyse the potential use of interlocking toe blocks, either in combination with rock slopes or slopes that consist of Cubes in a single layer. It appeared that the derived prediction method is accurate for 1:1.5 slopes and 1:2 slopes, that the roughness of the slope plays an important role and can be incorporated in the prediction method as well, and that interlocking toe blocks with a V-shape are an alternative to rock toe structures.

【 授权许可】

CC BY