A scaled physical model to study underwater noise from impact pile driving

2011 ◽  
Vol 130 (4) ◽  
pp. 2558-2558
Author(s):  
Katherine F. Woolfe ◽  
Shima Shahab ◽  
Juan Morales ◽  
Mardi C. Hastings
Keyword(s):  
Physical Model ◽  
Pile Driving ◽  
Underwater Noise

Prediction of underwater noise and far field propagation due to pile driving for offshore wind farms

2013 ◽  
Author(s):  
Stephan Lippert ◽  
Tristan Lippert ◽  
Kristof Heitmann ◽  
Otto Von Estorff
Keyword(s):  
Wind Farms ◽  
Offshore Wind ◽  
Pile Driving ◽  
Far Field ◽  
Underwater Noise ◽  
Offshore Wind Farms

Results of a scaled physical model to simulate impact pile driving

2012 ◽  
Vol 132 (3) ◽  
pp. 2061-2061
Author(s):  
Katherine F. Woolfe ◽  
Mardi C. Hastings
Keyword(s):  
Physical Model ◽  
Pile Driving

Towards a standard for the measurement of underwater noise from impact pile driving in shallow water

2014 ◽  
Vol 136 (4) ◽  
pp. 2216-2216
Author(s):  
Peter H. Dahl ◽  
Pete D. Theobald ◽  
Stephen P. Robinson
Keyword(s):  
Shallow Water ◽  
Pile Driving ◽  
Underwater Noise

scholarly journals Recording and Analyzing Underwater Noise During Pile Driving for Bridge Construction

2015 ◽  
Vol 43 (2) ◽  
pp. 159-167
Author(s):  
Liangliang Yang ◽  
Xiaomei Xu ◽  
Zhixiong Huang ◽  
Xingbin Tu
Keyword(s):  
Pile Driving ◽  
Underwater Noise ◽  
Bridge Construction

Applicability of 3D Spectral Element Method for Computing Close-Range Underwater Piling Noises

2019 ◽  
Vol 27 (04) ◽  
pp. 1950012
Author(s):  
C. Jeong ◽  
A. Manalaysay ◽  
H. N. Gharti ◽  
S. Guan ◽  
J. Vignola
Keyword(s):  
Shear Wave ◽  
Spectral Element Method ◽  
Spectral Element ◽  
Numerical Results ◽  
Pile Driving ◽  
Underwater Noise ◽  
Close Range ◽  
Mach Cones ◽  
Axially Asymmetric ◽  
Element Method

Pile driving is used for constructing foundation supports for offshore structures. Underwater noise, induced by in-water pile driving, could adversely impact marine life near the piling location. Many studies have computed this noise in close ranges by using semi-analytical models and Finite Element Method (FEM) models. This work presents a Spectral Element Method (SEM) wave simulator as an alternative simulation tool to obtain close-range underwater piling noise in complex, fully three-dimensional, axially-asymmetric settings in the time domain for impacting force signals with high-frequency contents (e.g., frequencies greater than 1000[Formula: see text]Hz). The presented numerical results show that the flexibility of SEM can accommodate the axially-asymmetric geometry of a model, its heterogeneity, and fluid-solid coupling. We showed that there are multiple Mach Cones of different angles in fluid and sediment caused by the difference in wave speeds in fluid, a pile, and sediment. The angles of Mach Cones in our numerical results match those that are theoretically evaluated. A previous work18 had shown that Mach Cone waves lead to intense amplitudes of underwater piling noise via a FEM simulation in an axis-symmetric setting. Since it modeled sediment as fluid with a larger wave speed than that of water, we examined if our SEM simulation, using solid sediment–fluid coupling, leads to additional Mach Cones. Because this work computes the shear wave in sediment and the downward-propagating shear wave in a pile, we present six Mach Cones in fluid and sediment induced by downward-propagating P- and S-waves in a pile in lieu of two previously-reported Mach Cones in fluid and sediment (modeled as fluid) induced by a downward-propagating P-wave in a pile. We also showed that the amplitudes of the close-range underwater noise are dependent on the cross-sectional geometry of a pile. In addition, when a pile is surrounded by a solid of an axially-asymmetric geometry, waves are reflected from the surface of the surrounding solid back to the fluid so that constructive and destructive interferences of waves take place in the fluid and affect the amplitude of the underwater piling noise.

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