Design and analysis for improved grout joint of offshore monopile foundation

Author

Yu-Hung Lin ; Cheng-Hsiu Tsai ; Chen-Jie Lian ; Huei-Jeng Lin ; Hsin-Haou Huang

Author_Institution

Dept. of Eng. Sci. & Ocean Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2014

fDate

7-10 April 2014

Firstpage

1

Lastpage

6

Abstract

Monopile usually consists of a `grout joint´ to connect the pile and the sleeve and supports the wind turbine. The grout corrects the alignment of the sleeve and the pile from imperfection when hammering it to the seabed. Nevertheless, the destruction of the concrete remains critical. This article focuses on the damage behavior of the grout joint, and proposes a few types of improved joints for the connection of the monopile. Numerical simulations are performed for the general type and the improved types of the joints. In the analysis, we construct both two- and three-dimensional models of the offshore wind turbine. The damage location and maximum stress from the static analysis are discussed. Models with improved types of the joint are also proposed, analyzed, and discussed.

Keywords

foundations; numerical analysis; offshore installations; stress analysis; wind turbines; damage location; grout joint; maximum stress; numerical simulations; offshore monopile foundation; offshore wind turbine; static analysis; three-dimensional models; two-dimensional models; wind turbine; Analytical models; Concrete; Joints; Numerical models; Steel; Stress; Wind turbines; grout joint; monopile foundation; offshore wind turbine; static analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2014 - TAIPEI

Conference_Location

Taipei

Print_ISBN

978-1-4799-3645-8

Type

conf

DOI

10.1109/OCEANS-TAIPEI.2014.6964382

Filename

6964382