Repair of Prestressed Concrete Girder Ends and Girder Collision Repair

Many bridges in the United States are aging such that they are in need of repair or strengthening. Fiber reinforced polymer composites are an increasingly popular material that can be used for bridge girder retrofit/repair. The purpose of this research, therefore, is to develop methods and design guidelines for repair and retrofit of bridge girders suffering (1) shear strength deficiencies related to end cracking and (2) flexural strength deficiencies related to vehicular collision. Scaled test specimens were fabricated and subjected to cyclic loading in order to instigate damage similar to that caused by end cracking and vehicular collision. Subsequently, the damaged specimens were repaired with external post-tensioned carbon fiber rods and re-tested to failure. This report presents the data from the tests and design guidelines for the use of external post-tensioned carbon fiber rods for repair applications.

Language

  • English

Media Info

  • Media Type: Print
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 57p

Subject/Index Terms

Filing Info

  • Accession Number: 01156593
  • Record Type: Publication
  • Report/Paper Numbers: UT-10.04
  • Contract Numbers: 089113
  • Files: TRIS, STATEDOT
  • Created Date: May 4 2010 3:31PM