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:
  Abutments Bridge Abutments Bridges--Abutments Bridge Substructures Piles (Supports) 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:e2f33d2b5b9f2f9009c1408399670e1c226057805838c0330fd67f281946b3db
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23230/dot_23230_DS1.pdf
• File Type:
  [PDF - 4.44 MB ]