Triton Knoll Offshore Windfarm

CFA AND DRIVEN PILING FOR A NEW ON-SHORE SUBSTATION GAS MAIN BRIDGE

Project Description

DATA Over 1500 No. 200mm & 250mm square precast concrete piles, 8no. 600mm diameter piles, 15m lengths

CLIENT Triton Knoll

CONTRACTOR Siemens

CONSTRUCTION PERIOD April – August 2019

 

Aarsleff Ground Engineering has recently completed piling for
a new substation as part of the Triton Knoll Offshore windfarm
project in Bicker Fen, Boston.

The new substation, which is connected to the windfarm via 40
miles of underground cable to the Lincolnshire coast, will
convert the generated electricity from the windfarm for the
National Grid.

Once completed, the windfarm will be capable of providing clean
and sustainable energy to over 800,000 UK homes.

Aarsleff were awarded the piling contract by Siemens, who
began works in September 2018 to create a new 3.8km access
road to the substation site. Aarsleff used two of its Junttan PM20
piling rigs to drive over 1500 No. 200mm and 250mm square
precast concrete piles across the site for various buildings and
equipment across the site. Subsequently, Siemens awarded
Aarsleff the piling works for a gas main bridge that crossed the
3.8km access road.

The precast concrete piles were supplied in lengths from 5m
to 14m lengths, and were manufactured by Aarsleff’s sister
company; Centrum Pile Ltd.

Aarsleff also installed 8no. 600mm diameter CFA piles of 15m
lengths, which were located either side of the gas main.
CFA piles were specified due to minimal vibrations it creates as
the piles are being installed. Siemens then laid a concrete slab
to create a bridge over the gas main and prevent any future
damage from service vehicles and machinery driving down the
access road.

Managing the piling operations, Aarsleff’s Senior Contracts
Engineer, Simon Cottington said, “It has been a pleasure to work
with Siemens on a sustainable energy project such as this one.
We completed a full set of successful dynamic and static load
testing on the piles and our overall piling operations ran smoothly throughout our time on site. This project was also the debut of our new Soilmec SF50 piling rig which allows us to install CFA piles up to 19m lengths.”

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Case Study

A leading UK ground engineering specialist, focusing on multi-discipline excellence and value engineering. We design and deliver some of the UK’s largest ground engineering projects.

Our vision is to bring confidence to those constructing the landscape of tomorrow .

1947. Central Jutland, Denmark. Per Aarsleff borrowed 10,000 Danish Kroner from his father’s life insurance, bought an excavator, and founded Northern Europe’s leading contracting company.

Our biggest asset, our team is composed of the leading experts in ground engineering. Working with collaboration and cohesion at the core of our business, we can guarantee a quick and founded answer to all your questions.

We recruit and reward our people based on our ‘Step into the Blue’ company culture, where we embrace the core values of Life and Health, Trust, and Responsibility.

We do everything to ensure our team and yours work safely on our sites. With our core value of Life & Health, we see safety as a cultural pillar.

Our ISO accreditations are an assurance to you that we take governance seriously. Read our policies to discover more.

The projects that keep society running. Bridges, buildings, transit and rail facilities, embankment support, marine and offshore facilities, mines, airports, and water projects.

Keeping things turning. Sewage Treatment Works, Waste Water Treatment Works, Wind Farms and Wind Turbines, Biomass Plants, and Power stations.

Meeting society’s needs. Nursing and care homes, MOD buildings, Schools and Universities, and small or large-sized residential developments.

Staying on the move. Remediation, bridges, and foundation work are integral to keeping the industry running smoothly.

The landscape of the marketplace. Mega-retail sheds, distribution warehouses, University accommodation, and major supermarket and household name units.

Keeping things afloat. Ports and harbours, coastal defences, river embankments and inland waterways.

Technically trained estimators and a dedicated, in-house design team means we consider value-engineering at every stage of your project.

More than just a model, Visual Design & Construction is a tool to encourage collaboration and improve quality across all facets of a scheme.

From large commercial sheds to small residential plots, piling could be the foundation solution you need to support your project.

Issues around collapse, slipping or erosion? Our experts in retaining solutions have a broad portfolio of techniques designed to fix even the most nuanced of sites.

Tricky ground conditions or requirements? Aarsleff’s ground engineering team work on stabilisation through a varied range of techniques, bespoke to the properties of your site ground.

Our plant workshop offers a range of services designed to ensure your plant works for you. Whether it’s manufacturing and fabrication of equipment for long-term needs or hire so you can complete something specific.