1. AÇIK DENİZ RÜZGAR ENERJİSİ TÜRBİNLERİ TEKİL KAZIK TEMELLERİNİN ÇEVRESİNDEKİ BOŞLUK SUYU BASINCI GELİŞİMİ.
- Author
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TAŞAN, H. Ercan, SAVİDİS, Stavros A., and AKDAĞ, Cihan Taylan
- Subjects
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PORE water pressure , *BUILDING foundations , *OFFSHORE wind power plants , *CYCLIC loads , *LATERAL loads , *SANDY soils , *TWO-phase flow , *HYDRAULIC conductivity - Abstract
Offshore wind energy converters (OWECs) require specific foundations due to special loading conditions. Large diameter monopiles are widely proposed for OWECs. The behavior of large diameter monopiles under cyclic lateral loads was investigated in this study by means of numerical simulation with finite element method. Special focus is given to the pore water pressure accumulation around the monopile. For this purpose a fully coupled two-phase finite element (u20p8) is developed. A hypoplastic constitutive model for the saturated sand soil is used in the numerical analyses. The results revealed that, pile head displacement is strongly dependent on excess pore water pressure (EPWP) accumulation around the monopile. Subsequently, pile diameter-hydraulic conductivity interaction diagram was derived with a parametric study to estimate the pore water pressure accumulation potential. The proposed interaction diagram enables a preliminary design tool of monopiles for offshore wind energy converters in saturated sand soils. [ABSTRACT FROM AUTHOR]
- Published
- 2014