Naslov
Reliability-based design of a monopile foundation for offshore wind turbines based on CPT data

Autori
Overgard, Ida ; Đepina, Ivan ; Eiksund, Gudmund

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Proceedings from the 17th Nordic Geotechnical Meeting

Urednik/ci
N, N

Izdavač
International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE)

Grad
Reykjavík

Godina
2016

Raspon stranica
495-502

ISBN
978-9935-24-002-6

Ključne riječi
Reliability, Optimization, RBDO, CPT, Random field

Sažetak
A reliability-based design optimization (RBDO) of a monopile foundation for offshore wind turbines is conducted to account for the uncertainties in the design process. The RBDO aims at optimizing the cost of construction, installation and failure with respect to the ultimate limit state of a monopile foundation while accounting for the effects of uncertainties in soil parameters and lateral loads. The soil parameters are interpreted via a probabilistic link which is composed of a random field model of CPTU measurements and the transformation uncertainty relating soil parameters to CPTU measurements. The maximum likelihood method is employed to estimate the random field parameters of CPTU measurements. Probabilistic models for soil parameters and lateral loads are coupled with the nonlinear p-y finite element model to predict the response of a monopile foundation. The RBDO problem is solved by coupling the Subset Simulation reliability method with the Simulated Annealing stochastic optimization algorithm.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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