Chapter
Dec 31, 2015
Dolos Stability Effect of Block Density and Waist Thickness
Authors: D J P Scholtz, J A Zwamborn, and M van NiekerkAuthor Affiliations
Publication: Coastal Engineering 1982
Abstract
Model tests were done with dolosse having the same shape and volume, but with different block densities, to determine the effect of block density on stability and to check whether the theoretical third-power relationship between block volume and relative block density is valid.
From these tests it can be concluded that the higher the density of the block material the greater the stability becomes. Although the individual scatter is appreciable, the average results indicate that the stability of dolosse is inversely proportional to a power of about 2,3 of the relative density, which is significantly less than the theoretical power of 3.
Model tests were also carried out on dolosse having the same mass and volume but with different waist-to-height ratios to determine the effect of waist-to-height ratio on the stability of a dolos armour.
From the results of these tests it can be concluded that the stability of the armour decreases with increasing waist thickness, particularly for relatively high waist ratios.
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Published In
Coastal Engineering 1982
Pages: 2026 - 2046
Copyright
© 1982 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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Authors
Affiliations
D J P Scholtz
Coastal Engineering and Hydraulics, National Research Institute for Oceanology, CSIR, Stellenbosch, Republic of South Africa
J A Zwamborn
Coastal Engineering and Hydraulics, National Research Institute for Oceanology, CSIR, Stellenbosch, Republic of South Africa
M van Niekerk
Coastal Engineering and Hydraulics, National Research Institute for Oceanology, CSIR, Stellenbosch, Republic of South Africa
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