The effect of load history on reinforced concrete bridge column behavior.

Details

• Creators:
  Goodnight, Jason ; Feng, Yuhao ; Kowalsky, Mervyn ; Nau, James
• Corporate Creators:
  Alaska University Transportation Center ; Alaska. Department of Transportation. Research, Development, and Technology Transfer
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge design
  • Concrete structures
  • Earthquake resistant structures
  • Earthquake resistant design
  • Dynamic structural analysis
  • Finite element method
  • Yield stress
  • Strain gages
  • Bridges--Design and construction
  • Earthquake resistant design
  More +
• Publication/ Report Number:
  FHWA-AK-RD-12-09
• Resource Type:
  Tech Report
• Geographical Coverage:
  Alaska
• Edition:
  Final report.
• Corporate Publisher:
  Alaska. Department of Transportation and Public Facilities
• Abstract:
  To satisfy the aims of performance based design, levels of damage which interrupt the serviceability of the ; structure or require more invasive repair techniques must be related to engineering criteria. In this report, the ; influence of displacement history on performance limit states, the relationship between strain and displacement, ; and the spread of plasticity in reinforced concrete structures is explored. An experimental study is underway to ; assess the performance of thirty circular, well-confined, bridge columns with varying lateral displacement ; history, transverse reinforcement detailing, axial load, aspect ratio, and longitudinal steel content. Eight of these ; columns, with similar geometry and detailing, were subjected to various unidirectional displacement histories ; including standardized laboratory cyclic loading and recreations of the displacement responses obtained from ; non-linear time history analysis of multiple earthquakes with distinct characteristics. Longitudinal reinforcing ; bars were instrumented to obtain strain hysteresis, vertical strain profiles, cross section curvatures, curvature ; distributions, and fixed-end rotations attributable to strain penetration. Results indicate that bar buckling was ; influenced by load history, but the relationship between strain and displacement along the envelope curve was ; not. The main impact of load history on bar buckling is its influence on accumulated strains within the ; longitudinal reinforcement and transverse steel.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25718/dot_25718_DS1.pdf
• File Type:
  [PDF - 69.59 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0832bed873fe287b3e4a507d36aeccf2ee79c613cb86dc54aaf6e63726caa6f6d290b5f982189b9a2e43101e9691d0df46169217a897720c12ebec622c0b1b9c