Correlation of Shear Design Between AASHTO LRFD Bridge Design Specifications and AASHTO Guide Specifications for the LRFD Seismic Bridge Design

This report presents the analytical study of the shear capacity of reinforced concrete columns using both the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications and the AASHTO Guide Specifications for the LRFD Seismic Bridge Design. The study investigates various levels of axial load, transverse reinforcement and longitudinal reinforcement to determine how the two specifications compare. The AASHTO Guide Specifications for the LRFD Seismic Bridge Design permits the designer to use the AASHTO LRFD Bridge Design Specifications or equations within the AASHTO Guide Specifications for the LRFD Seismic Bridge Design with predetermined values. In order to develop a comprehensive understanding of shear behavior, in addition to examining conventional reinforcement, the comparison will also be conducted on high strength concrete and reinforcement. Experimental data is limited for high strength concrete and reinforcement columns, but some test points will be provided to compare with the models. A database of numerous tested reinforced concrete columns, including conventional and high strength reinforcement, was developed. A list of shear equations was used to predict shear strength, which shows how the concrete and reinforcement shear capacity was predicted using shear equations. The key parameters investigated are column axial load, amount of transverse and longitudinal reinforcement and deformation ductility demand. The studied equations reveal differences in predicted shear strengths. A parametrical study was extended to conventional full-scale columns, using both the AASHTO LRFD Bridge Design Specifications and the AASHTO Guide Specifications for the LRFD Seismic Bridge Design to predict shear strength in order to analyze the direct effects of the parameters on the shear strength predictions.

  • Record URL:
  • Record URL:
  • Supplemental Notes:
    • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    University of Nevada, Reno

    Department of Civil and Environmental Engineering
    Reno, NV  United States  89557

    SOLARIS University Transportation Center

    University of Nevada
    Reno, NV  United States 

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Authors:
    • Sanders, David H
    • Lovasz, Hilda
  • Publication Date: 2017-1-5

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 48p

Subject/Index Terms

Filing Info

  • Accession Number: 01633358
  • Record Type: Publication
  • Contract Numbers: DTRT13-G-UTC55
  • Files: UTC, NTL, TRIS, ATRI, USDOT
  • Created Date: Mar 29 2017 2:15PM