Results 211 to 220 of about 7,344 (270)

Guided waves in a monopile of an offshore wind turbine

Ultrasonics, 2011
We study the guided waves in a structure which consists of two overlapping steel plates, with the overlapping section grouted. This geometry is often encountered in support structures of large industrial offshore constructions, such as wind turbine monopiles.
V, Zernov, L, Fradkin, P, Mudge
openaire   +2 more sources

Finite element analysis of newly designed monopiles for offshore wind turbines on seabed with shallowly buried batholith

Ships and Offshore Structures, 2022
In this paper, three types of hybrid monopiles are proposed for 3MW OWTs in offshore areas where the batholith is shallowly buried. Three-dimensional FE models are established considering the soil-structure-interaction (SSI) to calculate the bearing ...
Jinjin Zhai, Q. Yin
semanticscholar   +1 more source

Effect of loose sand layers within dense sand on the lateral capacity of extra-extra-large monopiles

Marine Georesources & Geotechnology
A series of 3D finite element analyses were performed to examine the influence of loose sand layers on the monotonic lateral capacity of an extra-extra-large semirigid monopile in dense sand.
A. Haiderali, Gopal S. P. Madabhushi
semanticscholar   +1 more source

Effect of embedding depth on the monotonic lateral response of monopiles in sand: Centrifuge and numerical modelling

Geotechnique, 2022
An experimental campaign is conducted on 100g centrifuged monopile model, impact driven, into saturated dense sand, down to three embedding depths, corresponding to three slenderness ratios of 5, 4 and 3. These models are instrumented with optical fibres
S. Maatouk, M. Blanc, L. Thorel
semanticscholar   +1 more source

Centrifuge modelling on monotonic and cyclic lateral behaviour of monopiles in kaolin clay

, 2021
This paper details a programme of centrifuge tests (100g) on the monotonic and cyclic lateral behaviour of large-diameter semi-rigid monopiles in kaolin clay.
D. Kong, Jing-Shen Zhu, Yi Long, B. Zhu, Qingjie Yang, Yufeng Gao, Yunmin Chen   +6 more
semanticscholar   +1 more source

Observed variations of monopile foundation stiffness

2015
The soil-structure stiffness of monopile foundations for offshore wind turbines has a high impact on the fatigue loading during normal operating conditions. Thus, a robust design must consider the evolution of pile-soil stiffness over the lifetime of the wind farm.
D Kallehave, C Thilsted, A Troya
openaire   +3 more sources

The Jackup Monopile: A Production Drilling Platform

Offshore Technology Conference, 1991
ABSTRACT The paper describes the main conceptual and design aspects of a Jack-Up Monopile Platform concept intended for drilling and production in North Sea and which combines technology from Gravity Base Platforms and Jack-Up Rigs.
C. Perol, S. Rodgers, P. Maniere
openaire   +1 more source

Dynamic impedance of monopiles for offshore wind turbines considering scour-hole dimensions

, 2021
This study presents an effective solution to evaluate the dynamic impedances of scoured monopiles for offshore wind turbines in a wide excitation frequency range, which can properly account for both the effects of the scour-hole dimensions as well as of ...
Hao Zhang, F. Liang, Hanbo Zheng
semanticscholar   +1 more source

On the behavior of monopiles subjected to multiple episodes of cyclic loading and reconsolidation in cohesive soils

, 2021
The study of cyclic loading on saturated natural clay deposits is of great interest for the analysis of offshore and onshore structures. Recent experimental research in the field of offshore engineering has indicated that the mechanical behavior of ...
J. Duque, M. Ochmański, D. Mašín, Yo-Han Hong, L. Wang   +4 more
semanticscholar   +1 more source

Lateral free-field responses and kinematic interaction of monopiles to obliquely incident seismic waves in offshore engineering

, 2021
This paper studies the lateral free-field response and dynamic interaction of monopiles with a partially/fully saturated porous seabed under a seawater layer, subjected to vertically and obliquely incident P and SV wave excitations.
R. He, A. Kaynia, Jisheng Zhang
semanticscholar   +1 more source