The Effects of Load History and Design Variables on Performance Limit States of Circular Bridge Columns – Volume 1

This report discusses a research program aimed at defining accurate limit state displacements which relate to specific levels of damage in reinforced concrete bridge columns subjected to seismic hazards. Bridge columns are designed as ductile elements which form plastic hinges to dissipate energy in a seismic event. 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. For reinforced concrete flexural members such as bridge columns, concrete compressive and steel tensile strain limits are very good indicators of damage. This report is the first of three volumes and presents interpretation of all experimental and numerical data and recommendations. In total, 30 large scale reinforced concrete columns tests were conducted under a variety of loading conditions. Using advanced instrumentation methods, strain levels for multiple performance limit states were established, including reinforcing bar buckling. A new model for plastic hinge lengths has been proposed as well.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; Photos; References; Tables;
  • Pagination: 312p

Subject/Index Terms

Filing Info

  • Accession Number: 01630029
  • Record Type: Publication
  • Contract Numbers: AKSAS #60855/T2-08-02; Federal # HPR-4000(72)
  • Files: TRIS, ATRI, STATEDOT
  • Created Date: Feb 28 2017 2:13PM