College - Author 1

College of Engineering

Department - Author 1

Civil and Environmental Engineering Department

Degree Name - Author 1

BS in Civil Engineering

College - Author 2

College of Engineering

Department - Author 2

Civil and Environmental Engineering Department

Degree - Author 2

BS in Civil Engineering

Date

5-2023

Primary Advisor

Robb Moss, College of Engineering, Civil and Environmental Engineering

Abstract/Summary

Offshore wind is a developing industry in the Central Coast with the advent of the future offshore wind project planned off the north coast of San Luis Obispo County. This senior design project aligns with the recently leased wind energy project as a detailed study on the structural design, geotechnical design, and construction of a single 14 MW floating offshore wind turbine (FOWT) located 40 km NW of Morro Bay (NOAA buoy 46028). A preliminary design of a spar FOWT is presented in this project as a solution to the rapidly increasing water depth off the coast of Morro Bay, anchored to the seafloor by a single suction caisson. Key design parameters and methodologies are identified based on research projects and operating wind turbines to form the conceptual design that is in compliance with Det Norske Veritas (DNV) codes. The turbine tower and spar floating platform are designed against the ultimate limit states (buckling and yielding) per DNV. Mass estimations and worst-case environmental loading have been calculated to analyze the floatability and determine the required ballast to satisfy the intact stability in the hydrostatic analysis of the structure. Worst-case loading and upscaled scenarios were considered in the suction caisson design conservatively. Construction operations at the staging location of Port Hueneme also including a project execution schedule and cost estimate are outlined in the report to analyze the feasibility of the project.

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