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Finite element modeling approach and performance evaluation of fiber reinforced polymer sandwich bridge panels : final report.
  • Published Date:
    2009-08-01
  • Language:
    English
Filetype[PDF-7.69 MB]


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Finite element modeling approach and performance evaluation of fiber reinforced polymer sandwich bridge panels : final report.
Details:
  • Publication/ Report Number:
  • Resource Type:
  • Geographical Coverage:
  • OCLC Number:
    456689799
  • Edition:
    Final report; May 2006-June 2009
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ; NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ;
  • Abstract:
    In the United States, about 27% of the bridges are classified as structurally deficient or functionally obsolete.

    Bridge owners are continually investigating methods to effectively retrofit existing bridges, or to economically replace

    them with new ones. Modern composite materials for structural applications, at one time only in the domain of

    aerospace engineering, are increasingly making their way into civil engineering applications. In addition to retrofitting

    current concrete and steel structures using FRP sheets or plates, a great deal of work is being conducted to develop

    versatile, fully-composite structural bridge systems.

    To reduce the self-weight and also achieve the necessary stiffness, sandwich panels are usually used for bridge

    decks. However, due to the geometric complexity of the FRP sandwich, convenient methods for bridge design

    have not been developed. The present study aims at developing finite element modeling techniques for sandwich

    structures. Parametric studies are carried out with the objective of developing equivalent elastic properties, which

    would be useful parameters in design. A distinction is made between in-plane and out-of-plane behavior, and

    properties are derived accordingly. The performance of the sandwich, such as the interface stress between the flange

    and wearing surface can be evaluated. Therefore, through finite element modeling, optimization can be achieved in

    order to minimize the interface stress. The contribution of stiffness of the wearing surface to structural performance,

    a factor which is not usually accounted for in typical design procedures, is also examined. An effort is also made

    to analyze the temperature effects on the structure’s performance. A conceptual approach aimed at studying the

    thermal performance of the panel due to both uniform and gradient temperature variations is presented.

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