PLACEMENT GRIDS, POROSITY AND RANDOMNESS OF ARMOR LAYERS

Vicente Pardo; Maria Piedad Herrera; Jorge Molines; Josep Ramon Medina

doi:10.9753/icce.v33.structures.37

No. 33 (2012), Coastal Structures

No. 33 (2012)

PLACEMENT GRIDS, POROSITY AND RANDOMNESS OF ARMOR LAYERS

Coastal Structures

https://doi.org/10.9753/icce.v33.structures.37

Published 2012-10-25

Vicente Pardo⁺⁻
Maria Piedad Herrera⁺⁻
Jorge Molines⁺⁻
Josep Ramon Medina⁺⁻

Vicente Pardo

Polytechnic University of Valencia

Maria Piedad Herrera

Polytechnic University of Valencia

Jorge Molines

Polytechnic University of Valencia

Josep Ramon Medina

University

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Keywords

breakwater
armor unit
armor porosity
placement grid
Cubipod
random placement
randomness

How to Cite

Pardo, V., Herrera, M. P., Molines, J., & Medina, J. R. (2012). PLACEMENT GRIDS, POROSITY AND RANDOMNESS OF ARMOR LAYERS. Coastal Engineering Proceedings, 1(33), structures.37. https://doi.org/10.9753/icce.v33.structures.37

Abstract

Armor porosity and armor unit randomness are much easier to control in small-scale models constructed by hand than in prototype. Differences between design and prototype armor porosities and design and armor unit randomness can generate significant model effects. This paper describes realistic 3D placement tests with cube and Cubipod CAUs, using a small-scale crawler crane and pressure clamps. This research aims to estimate workable armor porosities at prototype scale and to determine the prototype placement grids to obtain the armor porosities commonly tested in laboratories. A new methodology based on laser scanning was developed to measure armor unit randomness. This methodology can be applied to both small-scale models and prototypes. Armor Randomness Indexes (ARIs) are proposed to measure the randomness of cube and Cubipod armor units. The ARI values were higher for Cubipods than for cubes.

https://doi.org/10.9753/icce.v33.structures.37

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References

Bakker, P., M. Klabbers, M. Muttray, and A. van den Berge. 2005. Hydraulic performance of Xbloc armour units. Proc. 1st International Conference on Coastal Zone Management and Engineering in the Middle East.

Dupray, S., and J. Roberts. 2009. Review of the use of concrete in the manufacture of concrete armour units. Proc. of Coasts, Marine Structures and Breakwaters 2009, Thomas Telford Ltd., Vol. 1, 245-259.

Frens, A.B. 2007. The impact of placement method on Antifer-block stability. M.Sc. thesis, Delft University of Technology.

Gómez-Martín, M.E. and J.R. Medina. 2008. Erosion of cube and Cubipod armour layers under wave attack. Proc. 30th International Conference on Coastal Engineering, ASCE, 3461-3473.

Medina, J.R., M.E. Gómez-Martín, and A. Corredor. 2010. Influence of armor unit placement on armor porosity and hydraulic stability. Proc. 32nd International Conference on Coastal Engineering, ASCE, Paper No. 255/structures.41.

Medina, J.R., M.E. Gómez-Martín, and A. Corredor. 2011. Armor unit placement, randomness and porosity of cube and Cubipod armor layers. International Conference on Coastal Structures 2011, ASCE, B9-067 (in press).

Pardo, V., J. Molines, and J.R. Medina. 2010. Experimental Analysis of the Influence of Armor Unit Placement Method on Armor Porosity. Proc. 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection, 25.1-25.10.

SPM. 1984. Shore Protection Manual. U.S. Army Corps of Engineers, Waterways Experiment Station, Coastal and Hydraulics Laboratory, Vicksburg, MS.

Van der Meer, J. 1999. Design of concrete armour layers. Proceedings of the Coastal Structures ´99. A.A. Balkema, 213-221.

Yagci, O., and S. Kapdasli. 2003. Alternative placement technique for antifer blocks used on breakwaters. Ocean Engineering, 30, 1433-1451.http://dx.doi.org/10.1016/S0029-8018(02)00134-8

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PLACEMENT GRIDS, POROSITY AND RANDOMNESS OF ARMOR LAYERS

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