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Mersey Gateway Bridge, United Kingdom

With horizontally-positioned SB Brace Frame Units, generously-sized working levels were realized; in addition, they facilitated the load transfer of the cantilevered concreting sections above into the pylon shaft.
Mersey Gateway Bridge, Runcorn to Widnes, Great Britain
Mersey Gateway Bridge, Runcorn to Widnes, Great Britain: Horizontally-positioned SB Brace Frame Units
Landmark Mersey Gateway on form with help from PERI
ACS Self-Climbing Formwork with enclosed working platforms

Project data

Location: Runcorn to Widnes, United Kingdom

  • Cable-stay bridge across the River Mersey with 3 pylons with heights of 125 m (south), 80 m (centre) and 110 m (north)
  • Pylon height: 3 pylons up to 125 m high
  • Total length (including approach bridges): 2,130 m

Requirements

  • Complex pylon structure, bridge superstructure with a total of 6 vehicle lanes
  • Bracket-type widenings on both sides of the pylons for supporting the superstructure
  • Safe working conditions in spite of the high wind speeds

Customer

Merseylink J.V.:
FCC Construccion S.A.;
Kier Infrastructure & Overseas Ltd.;
Samsung C&T Corp.

Customer's benefit

  • Crane capacity savings
  • Continuous working operations without any interruptions, also during strong wind conditions
  • Fast construction progress through simultaneous climbing of multiple climbing units and reduced number of leading edges
  • Wind and rain-protected working at great heights
  • Enhanced working safety for site personnel
  • Generously-sized working areas
  • Simple lifting procedure of reinforcement scaffolding and materials through a special solution consisting of suspended, retractable formwork and foldable ACS R Working Platforms
Picture of Mr C H Lee, Technical Director
Mr. C H Lee
Technical Director

The PERI ACS Self-Climbing System, coupled with retractable formwork and PERI UP Scaffolding, ensured fast and easy formwork for pylon construction with safe access. This system accelerated the concreting works and shortened the cycle time, so we were able to climb 5 m height lift every five days.

PERI solution

  • Project-specific formwork and climbing solution
  • Crane-independent working operations with the ACS Self-Climbing Formwork and generously-sized climbing units, concreting cycle heights of 5 m (standard cases)
  • Enclosed climbing formwork working platforms
  • Load transfer for cantilevered pylon areas with horizontally-positioned SB Brace Frame units
  • Concreting heights exactly matched to suit anchoring possibilities in previously concreted shaft section
  • Regular on-site support provided by a PERI project manager