scholarly journals Design considerations of suction caisson foundations for offshore wind turbines in Southern China

2020 ◽  
Vol 104 ◽  
pp. 102358
Author(s):  
Bo Liu ◽  
Youhu Zhang ◽  
Zhaorong Ma ◽  
Knut H. Andersen ◽  
Hans Petter Jostad ◽  
...  
Keyword(s):  
Wind Turbines ◽  
Southern China ◽  
Offshore Wind ◽  
Suction Caisson ◽  
Offshore Wind Turbines ◽  
Design Considerations ◽  
Caisson Foundations

Suction Caisson Foundations for Offshore Wind Turbines

2002 ◽  
Vol 26 (3) ◽  
pp. 145-155 ◽  
Author(s):  
Byron Byrne ◽  
Guy Houlsby ◽  
Chris Martin ◽  
Peter Fish
Keyword(s):  
Design Process ◽  
Wind Turbines ◽  
Research Council ◽  
Shallow Foundations ◽  
Offshore Wind ◽  
Physical Sciences ◽  
Suction Caisson ◽  
Offshore Wind Turbines ◽  
Caisson Foundations ◽  
Suction Caissons

This paper outlines a £ 1.5m, three year, research project that commenced during the middle of 2002 to determine a design framework for shallow foundations for offshore wind turbines. The shallow foundations in focus are suction-installed skirted foundations otherwise known as suction caissons (Houlsby and Byrne, 2000). There are eight distinct themes to the research covering all aspects of the geotechnical performance of these foundations. The funding for the project has been obtained from the Department of Trade and Industry (£ 917k), Industrial Partners (£ 373k) and the Engineering and Physical Sciences Research Council (£ 221k). The results will feed into the design process for offshore wind turbines almost immediately.

Installation and Lateral Resistance of Model Suction Caissons in Sandy Ground

2014 ◽  
Vol 1030-1032 ◽  
pp. 790-797
Author(s):  
Yasuyuki Nabeshima
Keyword(s):  
Wind Turbines ◽  
Failure Surface ◽  
Lateral Force ◽  
Offshore Wind ◽  
Suction Caisson ◽  
Offshore Wind Turbines ◽  
Lateral Resistance ◽  
Sandy Ground ◽  
Suction Caissons

Suction caissons attract the attention as the foundation of offshore wind turbines. Installation and resistance behaviors of the suction caisson are important factors for the design of foundation. An installation behavior into sandy seafloor was discussed by using a model suction caisson and the failure surfaces in the aluminum rod mass, as the model ground, subjected to lateral force were compared. Consequently, the installation of model suction caisson into sandy sea depended on the permeability of sandy seafloor and lateral resistance of suction caisson depended on the dimension of suction caisson which affected on the shape of failure surface in the ground.

Installation and lateral loading tests of suction caissons in silt

2011 ◽  
Vol 48 (7) ◽  
pp. 1070-1084 ◽  
Author(s):  
Bin Zhu ◽  
De-qiong Kong ◽  
Ren-peng Chen ◽  
Ling-gang Kong ◽  
Yun-min Chen
Keyword(s):  
Wind Turbines ◽  
Large Scale ◽  
Lateral Loading ◽  
Offshore Wind ◽  
Scale Model ◽  
Moment Capacity ◽  
Offshore Wind Turbines ◽  
Rotation Center ◽  
Cone Penetration Tests ◽  
Caisson Foundations

A number of potential offshore wind turbines in China will be constructed in sandy silt seabeds, and the mono-caisson foundation is an important choice for these offshore wind turbines. A program of large-scale model tests on suction installation and lateral loading of caisson foundations in saturated silt were carried out in a large soil tank at Zhejiang University. Test results of installation resistance during suction installation show that the seepage effect is limited in silt, and the suction required to penetrate the caisson can be well predicted based on the sleeve friction and cone resistance of cone penetration tests. The deformation mechanism and soil-structure interaction of a caisson subjected to lateral loads were investigated. The instantaneous rotation center of the model caisson at failure was at the depth of about four-fifths of the skirt length, almost directly below the lid center. Based on the assumption of a common position of the instantaneous rotation center and dominating resistance forces on the caisson, an analytical expression for the ultimate moment capacity was presented.

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