Grouted connections for monopiles – limits for large wind turbines

Author: G. Prakhya, C. Zhang and N. Harding (Sir Robert McAlpine Design Group, UK)

Date published

1 March 2012

Price

Standard: £9 + VAT
Members/Subscribers: Free

Buy Now
Back to Previous

Grouted connections for monopiles – limits for large wind turbines

The Structural Engineer
Grouted connections for monopiles – limits for large wind turbines
Date published

1 March 2012

Author

G. Prakhya, C. Zhang and N. Harding (Sir Robert McAlpine Design Group, UK)

Price

Standard: £9 + VAT
Members/Subscribers: Free

Buy Now
Author

G. Prakhya, C. Zhang and N. Harding (Sir Robert McAlpine Design Group, UK)

A transition piece is used on monopile wind turbine foundations for transmitting the large moment from the wind on the tower. A grouted connection is generally adopted to connect the transition piece to the pile that is driven into the seabed. The grout connection has been successfully used in the offshore oil and gas industry on drilling and production platform jackets for the last 40 years. However the major difference for a wind turbine structure is that while the grout connection in jackets is mainly intended for large axial forces, the wind turbine grout connection is predominantly subjected to bending. The ability of the grout connection to transfer large moment is not fully understood due to lack of experiments and size effects. The theory that has been used for designing the grout is reviewed thoroughly here in order to understand the limitations.

Additional information

Format:
PDF
Pages:
15
Publisher:
The Institution of Structural Engineers

Tags

Issue 3

Related Resources & Events

The Structural Engineer
<h4>Roller Coaster</h4>

Roller Coaster

Ed Clark (Director, Arup) puts forward his interpretation of ‘structural excellence’ in an article based on his Milne Medal lecture.

Date - 1 March 2012
Author - E. Clark (Arup)
Price - £9
The Structural Engineer
<h4>Complete issue (March 2012)</h4>

Complete issue (March 2012)

All articles published in the March 2012 issue. (NB Technical Guidance Notes Level 1, No. 5 and Level 1, No. 6 contained within this issue were updated in October 2016. For the updated articles, see the individual article entries for this issue.)

Date - 1 March 2012
Price - £25
The Structural Engineer
<h4>Technical Guidance Note (Level 1, No. 5): Derivation of snow load</h4>

Technical Guidance Note (Level 1, No. 5): Derivation of snow load

This Technical Guidance Note concerns the derivation of snow load onto structures. It is based on Eurocode 1: Actions on Structures Part 1-3; General Actions – Snow Loads. With this Eurocode being focused on an action that is sensitive to environmental effects, the UK annex to it plays a significant role, as it makes reference to projected snow falls that are unique to the British Isles. There are a large number of variations and conditions the designer must be aware of when determining snow loads onto structures. As such, the reader is referred to the code text more frequently than in other Technical Guidance Notes. (This article was updated in October 2016 to reflect errata issued since its original publication.)

Date - 1 March 2012
Author - The Institution of Structural Engineers
Price - £0/£9