Design of piles for integral abutment bridges.

Details

• Creators:
  Greimann, L. F. ; Yang, P. S. ; Edmunds, S. K. ; Wolde-Tinsae, A. M.
• Corporate Creators:
  Iowa State University
• Corporate Contributors:
  Iowa. Dept. of Transportation ; Iowa. Highway Research Board
• Subject/TRT Terms:
  • Piles (Supports)
  • Abutments
  • Bridge abutments
  • Bridge substructures
  • Bridges--Abutments
  • Piling (Civil engineering)
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa. Dept. of Transportation
• Abstract:
  More and more, integral abutment bridges are being used in place ; of the more traditional bridge designs with expansion releases. In ; this study, states which use integral abutment bridges were surveyed ; to determine their current practice in the design of these structures. ; To study piles in integral abutment bridges, a finite element program ; for the soil-pile system was developed (1) with materially and ; geometrically nonlinear, two and three-dimensional beam elements and ; (2) with a nonlinear, Winkler soil model with vertical, horizontal, and ; pile tip springs. The model was verified by comparison to several ; analytical and experimental examples. ; A simplified design model for analyzing piles in integral abutment ; bridges is also presented. This model grew from previous analytic2l ; models and observations of pile behavior. The design model correctly ; describes the essential behavioral characteristics of the pile and ; conservatively predicts the vertical load-carrying capacity. ; Analytical examples are to illustrate the effects of ; lateral displacements on the ultimate load capacity of a pile. These ; examples include friction and end-bearing piles; steel, concrete, and ; timber piles; and bending about the weak, strong, and 4S0 axes for ; H piles. The effects of cyclic loading are shown for skewed and nonskewed ; bridges. The results show that the capacity of friction piles ; is not significantly affected by lateral displacements, but the ; capacity of end-bearing piles is reduced. Further results show that ; the longitudinal expansion of the bridge can introduce a vertical preload ; on the pile.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23230/dot_23230_DS1.pdf
• File Type:
  [PDF - 4.44 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:377ce0913cecf5a448814992e4326a8ed7b0722cc4016069818c2676eee3effd0deadbbb2456dd524cf9e1cdcdf959bfad72e8e3e39473172f44142f7b42853e