해상풍력용 모노파일 그라우트 연결부의 설계민감도 분석 - 전단키를 중심으로
Design Sensitivity of Monopile Grout Joint for Offshore Wind – Focusing on Shear Key
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For offshore wind monopile substructures, the grout joint is an important structural element for securing the transition piece at the pile top. One of the most important design factors for grout joints is shear key. The shear key is a key element attached to the steel member (pile or transition piece) surface to transmit the load between the steel and grout in the form of shear resistance. Its shape, installation number, installation intervals, etc., should be designed meticulously to safely support the upper offshore wind turbine over its service life. Despite its structural importance in joints, studies on shear-key design optimization have not been sufficiently conducted thus far. Therefore, a parametric study of design elements constituting the shear key is conducted in this study for a monopile grout connection for a 5 MW offshore wind.
Abstract
For offshore wind monopile substructures, the grout joint is an important structural element for securing the transition piece at the pile top. One of the most important design factors for grout joints is shear key. The shear key is a key element attached to the steel member (pile or transition piece) surface to transmit the load between the steel and grout in the form of shear resistance. Its shape, installation number, installation intervals, etc., should be designed meticulously to safely support the upper offshore wind turbine over its service life. Despite its structural importance in joints, studies on shear-key design optimization have not been sufficiently conducted thus far. Therefore, a parametric study of design elements constituting the shear key is conducted in this study for a monopile grout connection for a 5 MW offshore wind.