The effect of load history on reinforced concrete bridge column behavior : [summary].

Details

• Creators:
  Goodnight, Jason ; Feng, Yuhao ; Kowalsky, Mervyn ; Nau, James
• Corporate Creators:
  Alaska. Dept. of Transportation. Research, Development, and Technology Transfer ; Alaska University Transportation Center
• 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
• Publication/ Report Number:
  FHWA-AK-RD-12-09
• Resource Type:
  Brief
• Geographical Coverage:
  Alaska
• Corporate Publisher:
  Alaska. Dept. 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
• Funding:
  INE/AUTC 12.15
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27352/dot_27352_DS1.pdf
• File Type:
  [PDF - 320.36 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:88fb6e1d430fd947460256844ac1cd1071c8d12c2690d74d7fc62bc8ed0f146d