Case Study: Steel Sheet Pile River Wall, Chelsea Island Harbour, London

Steel Sheet Pile River Wall, Chelsea Island Harbour, London

Contract No:C1081
Client:Quinn Construction Ltd
Location:Chelsea Island Harbour, London
Summary:Supply & Installation of twin line of 18.0m long Arcelor GU32 sheet piles to form new 60.0m long River Wall

Sheet Piling (UK) Ltd were employed by Quinn Construction Ltd to undertake the supply and installation of sheet piles to form a new River Wall, as part of a luxury residential development in Chelsea, London.

Due to the severe limitations on working area behind the existing River Wall and in order to maximise the development footprint of the site, an innovative design solution was proposed utilising a twin line of sheet piles installed approx. 1.25m apart which were tied together using a reinforced concrete capping beam.

The part embedded retaining wall / part gravity composite sheet pile structure was analysed for overall stability and structural design forces using a complex PLAXIS finite element analysis.

The design work was undertaken by Byrne Looby Partners Consulting Engineers in close liaison with Sheet Piling (UK) Ltd regarding technical and practical installation issues.

The final design solution required 200No. 18.0m long Arcelor GU32 sheet pile sections in Grade S355GP steel. The sheet piles were ordered directly from Arcelor Mittal mill in Dabrowa, Poland.

Due to the works being located in the luxury Chelsea Harbour Development, the sheet piles were installed using a Silent Vibrationless Pile Pressing method.

The pile pressing system is particularly suited for projects in city centre locations where traditional vibratory installation methods would be prohibited due to the sensitive nature of the surrounding built environment.

The sheet piles to form the new River Wall were successfully installed during a 5No. week period in the summer of 2015.