The Cubipod is an armor unit that can be manufactured with a unit cost almost as low as the conventional cube. It is produced using a casting system...Leer más...
The Cubipod is a massive armor unit with a high structural strength. The drop tests at prototype scale proved that Cubipods withstand far higher dro...Leer más...
The Cubipod: The robust armor unit which reduces costs and environmental impact
The cost of a large breakwater depends on environmental conditions and a key design factor: the concrete elements which form the armor layer. Each shape (cube, tetrapod, Dolo, etc.), placement (random, ordered, patterned, etc.), armor porosity and number of layers has a different hydraulic stability coefficient, KD; if the armor unit is more stable (increased KD) it is reduced in size to withstand the design storm and thereby save money and concrete. Higher armor porosity or single layer would reduce the economic cost and carbon and energy footprints. The Cubipod has a higher hydraulic stability than the conventional cube in the roundhead and a much higher stability in the trunk; it may be placed in a single layer and the tendency of conventional cubic blocks to rearrange face to face is avoided.
Although hydraulic stability is crucial, the catastrophic failure of the Sines breakwater (1978), protected by Dolos W[t]=40, highlighted the paramount importance of structural strength for an armor unit which can break easily if too large. The Cubipod is a massive armor unit, belonging to the family of the conventional cube, which can withstand high pressures without rupture. Handled easily and safely, the Cubipod has also shown, in prototypes drop tests, greater impact resistance than conventional cubic blocks.
In addition to hydraulic stability and robustness, the Cubipod can be produced at low cost and with minimum storage space requirements; it can be handled safely and easily with double pressure clamps and put in place efficiently. The Cubipod has a manufacturing, stacking and handling processes similar to the conventional cubical block; the mould is vertically moved and can produce 2 or 3 units/day. Cubipods may be stacked in an open or closed arrangement with low porosity. Cubipods also have the advantage of random self-placement and self-repairing on the slope and low porosity variations are experienced in the long term. Compared to the double layer conventional cube armor and considering the considerable in concrete associated with single-layer Cubipod armors (smaller layer thickness, lower crest elevation and volume of crown wall), the overall cost savings may range from 15% to 45%, depending on climatic conditions and breakwater length.