Risk criteria in design stability of sloping structure in relation to the Iribarren number

Risk criteria in design stability of sloping structure in relation to the Iribarren number

Bruun, P.
Günbak, A.R.

TU Delft

1977-01-01

Existing design formulas for rubble-mound breakwaters under wave attack contain the wave height, H, and the slope angle, cc, as parameters of the wave characteristics (for d/H > 3.0, d being the water depth in front or the structure) and structure characteristics (incl. permeability, roughness, interlocking-, etc.) excluding the effect of wave period. When compared, they are .mostly inconsistent with their definition of stability and generally used the doubtful method of counting blocks that left their original location in the slope. A theory was therefore developed for the importance of the wave period, T , on the stability of rubble-mound breakwaters. Its validity is shown using the available laboratory data of Ref. (T) and by some experiments recently made in Norway. In connection wave run-up, run-down, breaking characteristics were summarized tan a using the Iribarren parameter.

breakwater
armour stability
rip-rap
Iribarren number

TPG110120

http://resolver.tudelft.nl/uuid:6a2dc566-de23-4534-9882-8360263eed16

British Hoovercraft Corporation

Symposium on design of rubble mound breakwaters, paper 4

Hydraulic Engineering Reports

report

© 1977 Bruun, P.
Günbak, A.R.