Suction Bucket Pile-Soil-Structure Interactions of Offshore Wind Turbine Jacket Foundations Using Coupled Dynamic Analysis SCIE SCOPUS

Cited 4 time in WEB OF SCIENCE Cited 6 time in Scopus
Title
Suction Bucket Pile-Soil-Structure Interactions of Offshore Wind Turbine Jacket Foundations Using Coupled Dynamic Analysis
Author(s)
Plodpradit, P.; Kwon, O.; Dinh, V.N.; Murphy, J.; Kim, K.-D.
KIOST Author(s)
Kwon, O Soon(권오순)
Alternative Author(s)
권오순
Publication Year
2020-06
Abstract
This paper presents a procedure for the coupled dynamic analysis of oshore wind turbine-jacket foundation-suction bucket piles and compares the American Petroleum Institute (API) standard method and Jeanjean's methods used to model the piles. Nonlinear springs were used to represent soil lateral, axial, and tip resistances through the P-Y, T-Z, and Q-Z curves obtained by either API's or Jeanjean's methods. Rotational springs with a stiness equated to the tangent or secant modulus characterized soil resistance to acentric loads. The procedure was implemented in X-SEA program. Analyses of a laterally loaded single pile in a soft clay soil performed in both the X-SEA and Structural Analysis Computer System (SACS) programs showed good agreements. The behaviors of a five MW oshore wind turbine system in South Korea were examined by considering waves, current, wind eects, and marine growth. In a free vibration analysis done with soil stiness through the API method, the piles were found to bend in their first mode and to twist in the second and third modes, whereas the first three modes using Jeanjean's method were all found to twist. The natural frequencies resulting from Jeanjean's method were higher than those from the API method. In a forced vibration analysis, the system responses were significantly influenced by soil spring stiness type. The procedure was found to be computationally expensive due to spring nonlinearities introduced. © 2020 by the authors.
ISSN
2077-1312
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/40251
DOI
10.3390/JMSE8060416
Bibliographic Citation
Journal of Marine Science and Engineering, v.8, no.6, 2020
Publisher
MDPI AG
Keywords
Coupled analysis; Finite element model (FEM); Jacket foundation; Oshore wind turbine; Soil-pile-structure interaction; Suction bucket
Type
Article
Language
English
Document Type
Article
Publisher
MDPI AG
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