RD® piles and RD® pile wall for Norvik Port megaproject in Stockholm
Stockholm Norvik Port is currently one of the Nordic countries’ busiest construction sites. The 44 hectare area is located around 60 kilometers south of Stockholm. New port is designed to support the container traffic which will be transferred from Stockholm port to Norvik. There are seven quay berths, harbor fields, harbor halls and buildings, major roads and around four kilometres of new railway track being built in the new port area. It will be possible to handle 500 000 containers per year there.
Drilling the RD pile wall from the work pontoons. (Image courtesy: Terramare Oy)
Contractor is Terramare Oy, which is part of Royal Boskalis Westminster nv. Norvik port quay work consisting of quay berths 3—7 and the associated stern door locations are being implemented together with Boskalis Nederland’s civil division. The value of the contract is approximately EUR 60 million. The project was launched in the latter part of 2017 and it will be completed by 2020. The substantial quay contract includes quay sections implemented with retaining quay wall elements and drilled piles.
Norvik Port Quay contract including quays 3-4 and quay 7.
SSAB’s piles were delivered for quays 3-4 and quay 7. Quays 3-4 are a 437 meter long quay section designed for the largest cargo vessels. The depth of the quay is 17 meters. Quay 7 is a 342 meter long quay section and its depth is 11 meters. These quays are founded on drilled piles. There are in total 800 piles.
SSAB’s single pile deliveries included RD 800/16 piles, RD600/16 piles and RD400/12.5 piles. RD pile wall delivery included RD800/20, RD700/14.2 and RD 800/14.2 piles equipped with RF/RM interlocks. Due to the extremely steep shore; the lengths of the drilled piles will vary from 6 to up 40 meters. The piles were drilled into hard granite bedrock. It has been important during the project that particularly at sea-facing sites to recover the drilling waste created in connection with the drilling due to the environmental restrictions.
Drilling RD piles from the work pontoons. (Image courtesy: Terramare Oy)
Piles have been produced in SSAB’s Oulainen tube mill and delivered by vessels from Raahe harbor. Piles have been unloaded on to work pontoons using a temporary quay. Drilling has been executed both from the work pontoons and from the land. The piling work will be completed in spring 2019.
This is first quay project for Terramare in collaboration with Boskalis Nederland’s civil division. “Working with multiple international companies together on a project this scale, requires tight communication and good cooperation. Therefore I’m glad to say that all companies involved succeeded together to realize all major deliveries and even created the necessary flexibility for last minute changes”, says Piet van Breukelen, Business Area Manager, SSAB.
RD pile wall anchored. (Image courtesy: Terramare Oy)