THEORY OF POST-INSTALLED REINFORCEMENT BARS AS A BASIS OF RETROFIT AND REHABILITATION

The rise in traffic flows and dramatic increases in axle weights impose loadings on many bridges that are far in excess of the loads for which they were designed. In consequence many of today's bridges are subjected to strengthening or lane widening schemes. With the resulting rehabilitation works comes the engineering challenge of providing monolithic connection between the new and the existing reinforced concrete elements. For many years this challenge has been solved by the planting of post-installed bonded starter bars. Despite the critical nature of these structural connections there are no national or international codes that regulate the design of post-installed reinforcement bars. As a result there is no consistency in design practise and many designers resort to the application of anchor theory. This paper lays out the design principles currently applied to the application of post-installed reinforcement starter bars and identifies the key design considerations necessary for the provision of structural continuity. For the covering abstract see IRRD E104152.

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  • Corporate Authors:

    Thomas Telford Limited

    London,   United Kingdom 
  • Publication Date: 1999

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00788371
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7277-2841-5
  • Files: ITRD
  • Created Date: Mar 3 2000 12:00AM