This project involved the reconstruction of 800m of the suspended deck quay at Teesport Berth which was originally constructed in the 1950s. Quinn Piling were contracted to install 450 rotary board piles with permanent steel casings up to 1050mm in diameter to support the new quay construction.
Additionally, Quinn Piling designed, installed and tested 63.5mm diameter double corrosion protection anchors, drilled to depths of up to 60m. The 110 ton high-capacity anchors resist forces from large storm bollards used by the port to secure large cargo ships during high winds. There were five storm bollards in total with four anchors in each bollard foundation.
The piling works were completed well ahead of program and the sequence was co-ordinated with the main contractor to enable the demolition and new quay slab construction activities to follow close behind the rigs and progress concurrently. The total length of quay reconstructed was approximately 550 metres in under two years.
Piling Scope and Details
Quinn Piling mobilised three rotary piling rigs and worked shifts for much of the project to improve on the main contractors demanding programme, achieving six piles per day.
At each pile location on the existing quay deck, a 1360mm diameter hole was bored through the existing 4ft thick reinforced concrete deck with a bespoke core-barrel fitted with heavy duty tungsten-carbide teeth.
Once the existing deck was cored, a permanent steel casing was inserted and drilled through the existing rock armour below and into the bedrock. A further 15m rock-socket was bored to construct the pile which had total depths of up to 36.5m.