Underwater Noise Reduction of Marine Pile Driving Using a Double Pile: Vashon Ferry Terminal Test

Reinhall, Per G.; Dardis, Tim; Hampden, Julie; Washington State Transportation Center

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Underwater Noise Reduction of Marine Pile Driving Using a Double Pile: Vashon Ferry Terminal Test

2016-11-01
By Reinhall, Per G. ; Dardis, Tim ; Hampden, Julie

[PDF-1.60 MB]

English

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Details:

Creators:

Reinhall, Per G. ; Dardis, Tim ; Hampden, Julie

Reinhall, Per G. ; Dardis, Tim ; Hampden, Julie Less -
Corporate Creators:

Washington State Transportation Center
Corporate Contributors:

Washington (State). Dept. of Transportation. Research Office ; United States. Federal Highway Administration

Washington (State). Dept. of Transportation. Research Office ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Acoustic Acoustic Emission Attenuation Mach Wave Marine Noise Control Pile Pile Driving Pile Foundations Pile Hammers Pressure Sediment Sediments SEL Sound Sound Exposure Level Underwater Underwater Sound
Publication/ Report Number:

WA-RD 861.1
Resource Type:

Tech Report
Geographical Coverage:

United States ; Washington

United States ; Washington Less -
TRIS Online Accession Number:

1618813
Edition:

Research report
Corporate Publisher:

Washington (State). Dept. of Transportation. Research Office
Abstract:

Impact pile driving of steel piles in aquatic environments produces extremely high underwater sound levels. To address this problem, a double-walled pile has been developed to decrease the total noise transmitted into the water and substrate. The double-walled pile consists of two concentric steel pipe piles flexibly connected by a special driving shoe, allowing for an air gap between the two tubes. The double-walled pile is driven into the sediment by using traditional equipment that strikes the inner pile only. The air gap between the inner and outer pile and the flexible coupling prevent the radial deformation wave produced by the pile hammer from interacting with the water and the sediment. A second full-scale test of the double-walled pile technology was performed at Vashon Island, Puget Sound, Washington. A potential reduction of the peak pressure in excess of 17dB was observed for the double pile and of 16 dB for the mandrel pile. Root mean square (RMS) levels and cumulative sound exposure levels (SEL) decreased by 13 dB and 12 dB, respectively. Use of the WSDOT Geotechnical Design Manual Pile Driving Formula showed that the pile capacity of the novel piles was comparable to that of a control pile with the same outer diameter. PDA (Pile Driving Analyzer) data were also collected from both the inner and outer piles of the mandrel and double piles and will be used to modify current software for predicting drivability and stresses in the piles (WEAP (Wave Analysis of Pile Driving) analysis) and for estimating load capacity after driving (CAPWAP (Case Pile Wave Analysis Program) analysis).
Format:

PDF
Funding:

Agreement T1461, Task 26
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:b74f44e4d991bbdaf1c2b1d840ff0c15b06b65312f4479a5c6e42702ec10b6cf
Download URL:

https://rosap.ntl.bts.gov/view/dot/38449/dot_38449_DS1.pdf
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Underwater Noise Reduction of Marine Pile Driving Using a Double Pile: Vashon Ferry Terminal Test

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