PRESTRESSED CONCRETE BRIDGE CONSTRUCTION WITH STEPPING FORMWORK EQUIPMENT

THE PROCEDURE OF SPANWISE CONSTRUCTION IN CAST-IN-SITU CONCRETE, USING SOME MOVEABLE FORMWORK TECHNIQUE, HAS PROVED MOST SUITABLE FOR LARGER-SIZE PRESTRESSED CONCRETE BRIDGES. THE CONSTANT REPETITION OF THE WORKING RHYTHM RESULTS IN A VERY ECONOMICAL CONSTRUCTION PROGRESS. DEPENDING ON THE CIRCUMSTANCES, ANY OF THE FOLLOWING MEANS MAY BE ADOPTED: SCAFFOLDING THAT HAS TO BE PARTLY DISMANTLED, MOVED INTO NEW POSITION AND REERECTED; SLIDING SCAFFOLDING; STEPPING DORMWORK EQUIPMENT, SLIDING ON THE GROUND; CANTILEVERED STEPPING FORMOWRK EQUIPMENT. THE DEVELOPMENT OF THE PROCESS-FROM USING MOVABLE SCAFFOLDING TO EMPLOYING CANTILEVERED STEPPING FORMWORK EQUIPMENT-HAS BEEN ILLUSTRATED BY EXAMPLES OF THE DIFFERENT METHODS. DISTINCTION IS MADE BETWEEN STEPPING FORMWORK EQUIPMENT FOR SPANS UP TO 50 M AND FOR THOSE FROM 50 TO 150 M (160 TO 500 FT) OR FOR EVEN LARGER SPANS. THE CONSEQUENCES AND THE SCOPE OF PRESTRESSED CONCRETE BRIDGE CONSTRUCTION WITH STEPPING FORMWORK EQUIPMENT ARE BEST ILLUSTRATED IN THE FINAL EXAMPLE: THE PRIZE-WINNING DESIGN OF THE BRIDGE ACROSS THE GREAT BELT IN DENMARK. THIS BRIDGE HAS VARYING SPANS UP TO 325 M (1100 FT). /RRL/A/

  • Supplemental Notes:
    • No 23, pp 507-536, 10 FIG, 38 PHOT, 13 REF
  • Corporate Authors:

    Intl Symp Concr Bridge Des Proc /Can

    ,    
  • Authors:
    • Wittfoht, H
  • Publication Date: 1969

Subject/Index Terms

Filing Info

  • Accession Number: 00215056
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Nov 18 1970 12:00AM