Underwater Noise Reduction of Marine Pile Driving Using a Double Pile: Vashon Ferry Terminal Test
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Impact driving steel piles through the water—for example, for ferry docks—produces extremely high underwater sound levels that can harm aquatic wildlife. Previous research has shown that without containing the noise, larger steel pipe piles cannot be installed with impact hammers without exceeding underwater noise thresholds established to protect critical species. To address this problem, a series of research projects for the Washington State Department of Transportation has developed a double-walled pile to decrease the total amount of noise. This project conducted a full-scale test of the double-walled pile technology at Vashon Island, Washington, with encouraging results. ... Read More | |
