PERFORMANCE OF BRIDGE EXPANSION JOINTS IN GREAT BRITAIN

THE EXPANSION JOINTS ON ABOUT 300 HIGHWAY BRIDGES IN ENGLAND AND WALES HAVE BEEN EXAMINED TO DETERMINE THE LIKELY CAUSES OF UNSATISFACTORY PERFORMANCE. ON 50 OF THE BRIDGES, THE JOINTS WERE IN NEED OF REPAIR OR REPLACEMENT AND THE MAIN CAUSE OF THEIR FAILURE WAS INADEQUATE PROVISIONS FOR SECURING THEM TO THE STRUCTURE. A COMPARISON OF SUCCESSFUL AND UNSUCCESSFUL JOINTS ESTABLISHED THE FOLLOWING CRITERIA FOR ADEQUATE SECURITY. /A/ IF THE JOINTS ARE SECURED BY HOLDING-DOWN BOLTS THEN THESE SHOULD APPLY A LOAD OF NOT LESS THAN 12 TONS PER FOOT TRANSVERSELY. /B/ IF THE JOINTS ARE SECURED BY REINFORCING BARS CAST INTO THE DECK THE TOTAL AREA OF CROSS-SECTION OF THE BARS PER FOOT LENGTH OF JOINT SHOULD BE AT LEAST 0.75 SQ IN. ONE BASIS FOR THE DESIGN OF JOINTS IS DISCUSSED AND COMPARED WITH THE DESIGN OF JOINTS USED. FROM THE RESULTS OF THE SURVEY, THE MOST SUITABLE JOINTS FOR ACCOMMODATING VARIOUS MOVEMENTS ARE DESCRIBED AND THEIR MERITS ARE DISCUSSED IN RELATION TO QUALITY OF WATER- PROOFING AND EASE OF INSTALLATION. /RRL/A/

  • Supplemental Notes:
    • No Ln/900, 94 PP, 50FIG, 2TAB, 15PHOT
  • Authors:
    • Black, W P
  • Publication Date: 1965-8

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Filing Info

  • Accession Number: 00208136
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Mar 11 1994 12:00AM