Kansas Department of Transportation Column Expert: Ultimate Shear Capacity of Circular Columns Using the Simplified Modified Compression Field Theory

The importance of the analysis of circular columns to accurately predict their ultimate confined capacity under shear-flexure-axial force interaction domain is recognized in light of the extreme load event imposed by the current American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Construction Specifications (AASHTO, 2014). In this study, various procedures for computing shear strength are reviewed. Then, the current procedure adopted by AASHTO LRFD specifications, based on the Simplified Modified Compression Field Theory, is evaluated for non-prestressed circular concrete bridge piers. This evaluation is benchmarked against experimental data available in the literature, and against Response 2000 freeware program that depicts interaction diagrams based on AASHTO (1999) LRFD requirements. Differences in results are discussed and future improvements are proposed. A new approach is presented to improve the accuracy of AASHTO LRFD calculations. The main parameters that control the cross section shear strength are discussed based on the experimental results and comparisons.

• Record URL:
  http://dmsweb.ksdot.org/AppNetProd/docpop/docpop.aspx?clienttype=html&docid=9342267
• Record URL:
  http://matc.unl.edu/assets/documents/matcfinal/Rasheed_KDOTColumnExpertUltimateShearCapacityofCircularColumnsusingtheModifiedCompressionFieldTheory.pdf
• 
• Summary URL:
  http://dmsweb.ksdot.org/AppNetProd/docpop/docpop.aspx?clienttype=html&docid=9342271
• Supplemental Notes:
  • Also available from Mid-America Transportation Center with title: KDOT Column Expert: Ultimate Shear Capacity of Circular Columns using the Simplified Modified Compression Field Theory
• Corporate Authors:

  Kansas State University Transportation Center

  Kansas State University
  Department of Civil Engineering
  Manhattan, KS  United States  66506

  Kansas Department of Transportation

  Bureau of Research
  2300 SW Van Buren Street
  Topeka, KS  United States  66611-1195

  Mid-America Transportation Center

  University of Nebraska-Lincoln
  2200 Vine Street, PO Box 830851
  Lincoln, NE  United States  68583-0851
• Authors:
  • Abouelleil, AlaaEldin
  • Rasheed, Hayder
• Publication Date: 2015-9

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; References; Tables;
• Pagination: 129p

Subject/Index Terms

• TRT Terms: Bearing capacity; Columns; Concrete bridges; Evaluation; Literature reviews; Load and resistance factor design; Shear strength
• Identifier Terms: AASHTO LRFD Bridge Construction Specifications; Modified Compression Field Theory
• Geographic Terms: Kansas
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01579627
• Record Type: Publication
• Report/Paper Numbers: K-TRAN: KSU-14-4, 25-1121-0003-262
• Contract Numbers: C1972
• Files: UTC, TRIS, ATRI, STATEDOT
• Created Date: Sep 9 2015 11:29AM