Mechanical Engineering, bridge bearings, structural engineering Specialists In Structural Movement Control
Mechanical Engineers Specialising In Structural Movement Control
Supplied: Fabrication and installation of
temporary works and jacking system.
Removal of existing bearings. Supply,
manufacture and installation of 8 no
guided, fixed and free bearings.
A645 NEWLAND BRIDGE - FABRICATION &
INSTALLATION OF TEMPORARY WORKS & BEARING INSTALLATION
Newland Bridge is a three span composite steel and concrete structure carrying two
lanes of the A645 over the River Aire. The A645 links Goole and Selby, providing direct
access from Goole Docks and the M62 motorway to Drax Power Station.
As a result of the embankment approaches, to the bridge structure, suffering up to 800mm
of settlement since its construction in 1991, structural failings in the bridge had been
identified and reported as requiring urgent repair. This ground movement had caused the
abutments to be displaced towards the deck, and in doing so the longitudinal free bearings
at the west end of the deck were beyond their operational limits and therefore nonfunctional.
A complex, multi-directional jacking scheme for the structure was designed,
developed and installed for controlled live monitoring throughout the bearing removal and
installation process. This enabled safe execution of all temporary/permanent works and
bridge repairs whilst safely dispelling the existing propping force in the deck.
Job Brief
Background Information
Project Team
Client: ERYCC
Main Contractor: PBS Construction (NE)
Bearing Specialist: Ekspan
Jacking & Monitoring
Specialist: Mabey Hire
Start Date: September 2015
Completion Date: November 2015
Ekspan worked closely with Mabey Hire to undertake the manufacture
and installation of temporary works , and the removal and
replacement of the permanent bridge bearings on Newland Bridge.
Ekspan manufactured and installed the longitudinal and transverse hydraulic
jacking system (jointly developed and designed by Mabey Hire and Arup)
used to control movement of the bridge in multiple directions and enabled
bearing removal from each of the four pier locations and the abutments.
The replacement bearings were manufactured and supplied by Ekspan
to suit existing fixing centres in the beams, and with oversize top
plates to accommodate additional future translation requirements.
The successful removal and installation of Newland Bridge bearings is
attributed to the critical and strategic planning of all site operations which
worked parallel to the structural monitoring and control system installed by
Mabey Hire. Controlled monitoring ensured the bridge structure remained within the prescribed tolerances throughout
the duration of works with no out of tolerance, allowing Ekspan to execute all works on this project safely and on time.
Ekspan's Workscope
Longitudinal jacking - temporary works
Removal of bearing on pier