Abstract
Monopile foundations are the most common foundation type for offshore wind turbines. Local scour and scour protection around piles in the marine environment are major concerns for the engineering community. Physical simulations of local scour around monopiles without scour protection and edge scour around monopiles with cement-improved soil protection under the combined action of wave and current were performed using a flume. The effects of Ucw, the KC number and (θ/θcr)0.5 on the local scour were investigated. The empirical expressions of the relative scour depth S/D based on the average-velocity based Froude number (Fra) and modified Ursell number Urp’ under the combined wave and current conditions were proposed. Moreover, the scour protection performance of cement-improved soil was revealed, and the optimal protection range was 7D and 5D for small- and large-diameter piles, respectively. The effects of the ratio of protection range to pile diameter (Ds/D) and aspect ratio Ar on edge scour were investigated. Finally, the feasibility and effectiveness of the new scour protection method for cement-improved soil were verified by site testing.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
