Evaluation of the lateral response of monopile-supported offshore wind turbines using OpenSeesPL

Bildiriler > Özet Bildiri · 2026

Yazarlar: Mehmet Fahrettin ERENER, Devrim Şüfa ERDOĞAN, Cihan Taylan AKDAĞ, Tuğçe TUFAN ERENER

7th Eurasian Conference on OpenSees, İsviçre, Lozan, Uluslararası, Sözlü Sunum, Özet Bildiri, 2026-2026, ss 52-52

Özet

<p>The&nbsp;numerical&nbsp;investigation&nbsp;of&nbsp;large-diameter&nbsp;monopile&nbsp;foundations&nbsp;supporting&nbsp;offshore&nbsp;wind&nbsp;turbines&nbsp;(OWTs)&nbsp;has&nbsp;gained&nbsp;significant&nbsp;attention&nbsp;in&nbsp;recent&nbsp;years&nbsp;due&nbsp;to&nbsp;the&nbsp;increasing&nbsp;demand&nbsp;for&nbsp;reliable&nbsp;prediction&nbsp;of&nbsp;their&nbsp;performance&nbsp;under&nbsp;dynamic&nbsp;loading&nbsp;conditions.&nbsp;Advanced&nbsp;modelling&nbsp;approaches&nbsp;are&nbsp;widely&nbsp;employed&nbsp;to&nbsp;capture&nbsp;the&nbsp;behavior&nbsp;of&nbsp;these&nbsp;structures,&nbsp;particularly&nbsp;under&nbsp;cyclic&nbsp;and&nbsp;seismic&nbsp;loading.&nbsp;In&nbsp;this&nbsp;study,&nbsp;a&nbsp;three-dimensional&nbsp;numerical&nbsp;model&nbsp;of&nbsp;an&nbsp;OWT&nbsp;with&nbsp;a&nbsp;monopile&nbsp;foundation&nbsp;in&nbsp;saturated&nbsp;medium-dense&nbsp;sand&nbsp;was&nbsp;established&nbsp;in&nbsp;OpenSeesPL&nbsp;[1],&nbsp;a&nbsp;software&nbsp;built&nbsp;on&nbsp;the&nbsp;OpenSees&nbsp;framework&nbsp;[2]&nbsp;and&nbsp;widely&nbsp;used&nbsp;for&nbsp;seismic&nbsp;soil-pile&nbsp;interaction&nbsp;analyses.&nbsp;The&nbsp;finite&nbsp;model&nbsp;was&nbsp;used&nbsp;to&nbsp;investigate&nbsp;the&nbsp;soil-monopile&nbsp;response&nbsp;under&nbsp;dynamic&nbsp;loading,&nbsp;with&nbsp;particular&nbsp;attention&nbsp;given&nbsp;to&nbsp;the&nbsp;effects&nbsp;of&nbsp;finite&nbsp;element&nbsp;mesh&nbsp;size&nbsp;and&nbsp;soil-pile&nbsp;interface&nbsp;modelling.&nbsp;The&nbsp;soil&nbsp;behavior&nbsp;was&nbsp;represented&nbsp;by&nbsp;the&nbsp;PressureD&nbsp;ependent-&nbsp;MultiYield02&nbsp;(PDMY02)&nbsp;constitutive&nbsp;model&nbsp;[3]&nbsp;for&nbsp;the&nbsp;liquefiable&nbsp;sand,&nbsp;enabling&nbsp;the&nbsp;simulation&nbsp;of&nbsp;cyclic&nbsp;soil&nbsp;response&nbsp;and&nbsp;liquefaction&nbsp;associated&nbsp;with&nbsp;excess&nbsp;pore&nbsp;water&nbsp;pressure&nbsp;development.&nbsp;The&nbsp;monopile&nbsp;response&nbsp;was&nbsp;assessed&nbsp;in&nbsp;terms&nbsp;of&nbsp;pile&nbsp;deformations,&nbsp;whereas&nbsp;the&nbsp;soil&nbsp;response&nbsp;was&nbsp;interpreted&nbsp;through&nbsp;excess&nbsp;pore&nbsp;water&nbsp;pressure,&nbsp;shear&nbsp;strain,&nbsp;and&nbsp;stress&nbsp;path&nbsp;evolution.&nbsp;The&nbsp;results&nbsp;indicate&nbsp;that&nbsp;finite&nbsp;element&nbsp;model&nbsp;configuration&nbsp;significantly&nbsp;influences&nbsp;the&nbsp;response.&nbsp;Mesh&nbsp;refinement&nbsp;improves&nbsp;the&nbsp;representation&nbsp;of&nbsp;strain&nbsp;localization&nbsp;and&nbsp;excess&nbsp;pore&nbsp;pressure&nbsp;buildup,&nbsp;while&nbsp;the&nbsp;interface&nbsp;modelling&nbsp;approach&nbsp;governs&nbsp;load&nbsp;transfer&nbsp;mechanisms&nbsp;and&nbsp;monopile&nbsp;deformation&nbsp;behavior.&nbsp;The&nbsp;findings&nbsp;highlight&nbsp;the&nbsp;importance&nbsp;of&nbsp;appropriate&nbsp;modelling&nbsp;approaches&nbsp;in&nbsp;nonlinear&nbsp;analyses&nbsp;of&nbsp;monopile&nbsp;foundations&nbsp;and&nbsp;provide&nbsp;insight&nbsp;into&nbsp;the&nbsp;selection&nbsp;of&nbsp;mesh&nbsp;density&nbsp;and&nbsp;interface&nbsp;representation&nbsp;for&nbsp;reliable&nbsp;simulation&nbsp;of&nbsp;OWT&nbsp;systems.&nbsp;</p>

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