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Mini piling for reconstruction of Network Rail bridge
Keller was tasked with installing mini piles in an area with restricted headroom as part of the reconstruction of Denmark Street bridge in Middlesborough, a vital part of Network Rail's upgrade of the UK's Victorian railway infrastructure in the north east of England. The project aim was to remove and upgrade the ageing DSN231 (Denmark Street
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Pali Radice piling in reduced headroom at Denmark Street bridge
Keller was tasked with installing mini piles in an area with restricted headroom as part of the reconstruction of Denmark Street bridge in Middlesborough, a vital part of Network Rail's upgrade of the UK's Victorian railway infrastructure in the north east of England.
Aim
The project aim was to remove and upgrade the ageing DSN231 (Denmark Street) bridge deck as part of the refurbishment works to Network Rail infrastructure, modernising the ageing structure and allowing further growth in the area.
Challenge
Installing 34 cast in-situ bored grouted mini piles in 2.7m limited headroom to underpin the Network Rail bridge on Denmark Street, with live operational traffic on the above railway line above.
Solution
To install 18 vertical and 16 raked 280 / 220mm cast in-situ bored Pali Radice mini piles. The raked piles were bored through the existing railway abutment and permanently bonded to the shallow concrete foundations to enhance the load-bearing capacity of the structure. The 16 vertical piles are not required to be bonded to the existing foundations as a subsequent capping beam will structurally connect the system together.
