Rio Papaloapan Bridge: design and successful application of special non destructive inspection techniques

This work describes the Non Destructive Tests (NDT) that were developed and applied to the Río Papalopan Bridge to analyze and to evaluate the structural condition of the upper anchorage elements of the bridge’s cables. This project initiated from the failure of one of the anchorage elements in 2000; since then, a series of studies was generated to investigate this problem and consider the rehabilitation of the bridge. As a result of the failure analysis done in 2000, it was found that microstructural defects in the steel of the anchorage element were the main cause, mostly because of deficiencies in the manufacture process. Because of that, a NDT method was developed to identify anchorage elements in service with similar characteristics to the failed one. In 2003, the ultrasonic inspection technique was used to detect the microstructural defects and 16 elements were found as probable to fail, so it was proposed to change the elements. In 2008, the rehabilitation of the bridge considered the change of 20 elements (4 in good condition for a reliability study). During the rehabilitation process, 3 different NDT were used: ultrasonic, liquid penetrant, and vibrations. The first two were to detect cracks in the welded unions, and the third was to calculate the load distribution in the cables at each rehabilitation stage.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Photos; References; Tables;
  • Pagination: 16p
  • Monograph Title: 24th World Road Congress Proceedings: Roads for a Better Life: Mobility, Sustainability and Development

Subject/Index Terms

Filing Info

  • Accession Number: 01523544
  • Record Type: Publication
  • ISBN: 2840602679
  • Files: TRIS
  • Created Date: Apr 10 2014 10:01PM