Integral abutment bridges under thermal loading : numerical simulations and parametric study.

Details

• Alternative Title:
  A report of the findings of ICT project R27-115 : analysis of superstructures of integral abutment bridges.
• Creators:
  LaFave, James M. ; Fahnestock, Larry ; Wright, Beth A. ; Jarrett, Matthew W. ; Svatora, Jeffrey S. ; An, Huayu ; Brambila, Gabriela
• Corporate Creators:
  Illinois Center for Transportation ; University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge design
  • Bridge superstructures
  • Finite element method
  • Girders
  • Jointless bridges
  • Parametric analysis
  • Simulation
  • Skew bridges
  • Thermal stresses
  • Integral abutment bridges
  More +
• Publication/ Report Number:
  FHWA-ICT-16-014 ; 16-015 ; UILU-ENG-2016-2015
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  Integral abutment bridges (IABs) have become of interest due to their decreased construction and maintenance costs in ; comparison to conventional jointed bridges. Most prior IAB research was related to substructure behavior, and, as a result, most ; limit states that have been considered in design guidelines have been based on substructure considerations. However, integral ; abutment construction also affects superstructure behavior and demands, and superstructure properties directly influence ; substructure behavior. This report presents numerical simulations evaluating the behavior of IABs with composite steel I-girders ; subjected to temperature changes consistent with seasonal fluctuations in the state of Illinois. Nonlinear bridge models are ; introduced in which key parameters are varied, such as span length, pile size, and skew. Other parameters that were deemed of ; less importance, like various pile and soil conditions, are studied as well. Three-dimensional finite element model results indicate ; that longitudinal bridge movement is directly dependent on IAB effective expansion length (EEL), regardless of other bridge ; design parameters. Structural responses such as girder superstructure elastic stress and pile substructure inelastic strain are ; influenced by EEL, pile type and size, superstructure rotational stiffness, and bridge skew. Results presented herein suggest that ; superstructure geometry—including bridge skew—should be considered in IAB substructure design and that thermally induced ; stresses and strains should be considered in superstructure and substructure design.
  More +
• Format:
  PDF
• Funding:
  R27-115
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31532/dot_31532_DS1.pdf
• File Type:
  [PDF - 1.43 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:34f323f971102b4659306e6646ac6bc2b376120ee42e0b39367a333acddf90fd