Reducing the discrepancy in calculated shear capacity at the transition from a deep to slender beam

David B. Birrcher, Robin G Tuchscherer, Oguzhan Bayrak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A research study was performed to investigate the discrepancy in shear capacity calculated with strut-and-tie models and sectional models near the transition between deep and slender beams. Shear test data from a largescale experimental program and the literature (179 total tests) were analyzed. Inappropriately large discrepancies in shear strength calculated using the AASHTO LRFD (2008) strut-and-tie model and sectional shear provisions were found when the shear span-to-depth (a/d) ratio was near 2. The discrepancies were largely due to overly-conservative estimates of strength calculated with the strut-and-tie model provisions in AASHTO LRFD (2008). The discrepancies were greatly reduced with the use of strut-and-tie model provisions developed in this study that were largely based on fib (1999) recommendations.

Original languageEnglish (US)
Title of host publication3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings
PublisherPrecast Prestressed Concrete Institute
ISBN (Electronic)9780937040904
StatePublished - 2010
Externally publishedYes
Event3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States
Duration: May 29 2010Jun 2 2010

Other

Other3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010
CountryUnited States
CityWashington
Period5/29/106/2/10

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Keywords

  • A/d ratio
  • Deep beam shear
  • Strut-and-tie model

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering

Cite this

Birrcher, D. B., Tuchscherer, R. G., & Bayrak, O. (2010). Reducing the discrepancy in calculated shear capacity at the transition from a deep to slender beam. In 3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings Precast Prestressed Concrete Institute.