Evaluating Shear Capacity of Concrete Girders with Deficient Shear Reinforcement

• Author / Creator

  Ormberg, Grant

• This study assesses the suitability of four sectional shear methods for predicting the shear
  capacity of reinforced concrete members which do not comply with S6-06 Section 14 stirrup
  spacing and area requirements. The results of the evaluations indicate that the sectional shear
  provisions in S6-06, AASHTO LRFD-05 and software Response 2000 appropriately account for
  variations in stirrup spacing and area detailing, and present with good agreement between
  predicted and tested shear capacities for member with deficient shear reinforcement. However,
  shear capacities calculated using ACI 318-08 do not agree well with tested capacities for
  members with less than minimum stirrups. Two modified shear methods are proposed, which
  revise the diagonal crack spacing and concrete contribution area assumed by S6-06. The
  modified shear methods improve predictions of shear capacity relative to predictions calculated
  using S6-06 and eliminate the issue of non-convergent shear capacity predictions which can result
  from evaluation using S6-06.

• Subjects / Keywords

  • Stirrups
  • Concrete
  • Shear
  • S6-06
  • Non-convergence

• Graduation date

  Fall 2010

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3JC8N

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.