3/24/2024 0 Comments Breakwater design maine![]() In the US, four states have prohibited the construction of coastal defense structures: North Carolina, South Carolina, Maine, and Rhode Island. So, they have both pros and cons.Īs a result, the adoption of shoreline armoring practices is often controversial and not always unanimous. What have they got in common? They're all artificial shoreline stabilization structures built to protect inland human constructions and fight erosion.īreakwaters, groins, jetties, and seawalls have a significant impact on the shoreline and can even incidentally create, improve, or destroy surf breaks and surfing waves.Īll these human-made mechanisms shape the coastline and alter the behavior and movement of sand and sediments. Discover the differences and similarities between breakwaters, groins, jetties, and seawalls. This work demonstrates the possibility to reduce the size, weight, and attenuation mechanism of a breakwater, while maintaining its overall effectiveness.They're everywhere. The overall weight of the full scale box breakwater constructed from composite sandwich materials was 88% less (200 metric tons vs 1548 metric tons) than the same design made of conventional concrete. The beach also had the advantage of being half the full-scale width of the box, 8.56 m wide compared to 16.9 m for the box. ![]() The beach was able to utilize an alternative to reflection to attenuate wave energy, with greater than 50% of the attenuation coming from dissipation. This was comparable to the box, which attenuated 50% of the energy up to a period of 7.5 s. The target operation environment for the breakwaters was a period of 3-6 s, and within this range, the beach breakwater was able to attenuate 50% of the energy up to a period of 5.5 s. The pipe breakwater was designed to utilize drag and vortex shedding as wave attenuation mechanisms, while the beach was designed to utilize wave breaking to induce turbulence. All three were designed to be constructed of lightweight composite sandwich material as opposed to concrete. Three breakwaters consisting of a box, beach, and pipe designs were constructed at 1:40 scale and tested in a Wind and Wave Basin located in the Advanced Structures and Composites Center at the University of Maine. ![]() This research aimed to construct floating breakwaters out of lightweight materials with a smaller footprint while utilizing alternative attenuation mechanisms. Traditional floating breakwaters typically consist of reflective concrete structures that are limited semi-sheltered locations. ![]() Floating breakwaters offer the advantages of adapting to rising sea level, allowing important material transport to occur, and being able to deploy and adapt to varying environmental conditions (seabed, depth, etc.). Global warming and sea level rise threaten to render traditional coastal protection structures as less effective. ![]()
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