INTEGRAL BRIDGES SUBJECT TO LENGTH FLUCTUATIONS

A conventional bridge has expansion/contraction joints to accommodate the change in length as temperatures rise and fall. However, salt and dirt enter the joints and cause corrosion and other costly damage. As a possible solution, engineers have been considering the increased use of the integral bridge structure. In addition to lack of joints, cost favors the integral bridge. However, integral bridges pose their own assortment of design challenges. An integral bridge has no joints in its deck, and the structure is connected rigidly to the abutments, which act as a unit. The abutments are usually supported on piles. A problem occurs when the abutment or the piles move horizontally against the adjacent soil. The Federal Highway Administration has mandated limits on the length of integral bridges as it considers long-term effects of the daily and seasonal movements and the use of different materials. Researchers will assess the accuracy of current theories for evaluating the relationship between earth pressures on, and movements of, integral abutments, pile groups, and pile caps.

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  • Corporate Authors:

    Civil Engineering News, Incorporated

    1255 Roberts Boulevard, Suite 230
    Kennesaw, GA  United States  30144
  • Publication Date: 1999-4

Language

  • English

Media Info

  • Pagination: p. 19
  • Serial:
    • Civil Engineering News
    • Volume: 11
    • Issue Number: 3
    • Publisher: Civil Engineering News, Incorporated
    • ISSN: 1051-9629

Subject/Index Terms

Filing Info

  • Accession Number: 00763614
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 23 1999 12:00AM