TRENT BALANCED CANTILEVER BRIDGE GATHERS MOMENTUM

Improvements to the novel construction technique used for the M180 glued segmental bridge over the River Trent near Scunthorpe are starting to overcome the delays due mainly to excessive scour in the river. Three of the four post tensioned concrete box girders are now complete. The deck erection programme had to be altered to exclude the central river pier from the critical path. The construction sequence is unusual in that the steel truss launch girder, mounted centrally over the pier, is also used to provide out of balance restraint between the growing cantilevers as the segments are added to each end. Once in position, each precast unit is glued to its neighbour and immediately temporarily stressed, the glue acting primarily as a lubricant and, once set, as a watertight gasket. Structurally the glue helps to transmit loads evenly over a complete joint. A mini computer is used to check each stage of the 84 stress changes as units are positioned and stressed. /TRRL/

Media Info

  • Features: Photos;
  • Pagination: p. 52
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00301996
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Dec 19 1979 12:00AM