![]() ![]() The residual hub displacement after earthquake excitation is around 0.1 m. This can lead to excessive settlement of the transition piece and loss of axial capacity caused by deterioration of the grout-steel bond and water ingress. The results show that cracking of the grout occurs due to earthquake excitation at the top of the TP a location that is typically undamaged during monotonic loading. The numerical model is validated against a medium-scale 4-point bending laboratory test, and scaled up to a representative 8 MW turbine. ![]() The work focuses on equivalent grouted connection and TP-less designs, selected as promising design solutions for seismic zones. This paper details a 3D finite element study to investigate the behaviour of the structure, and in particular the transition piece (TP), under seismic loads. Expansion of the offshore wind industry in seismically active areas has raised concerns regarding the structural integrity of offshore wind turbines under earthquake loading. ![]()
0 Comments
Leave a Reply. |