Tension stiffening model for reinforced concrete based on bond stress slip relation

Open Access
Author:
Lin, Yun
Graduate Program:
Civil Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
May 03, 2010
Committee Members:
  • Andrew Scanlon, Thesis Advisor
Keywords:
  • cracking
  • Reinforced concrete
  • tension stiffening
  • bond
Abstract:
Tension stiffening is a structural property of reinforced concrete that refers to the contribution of concrete between cracks to the overall stiffness of the member. In assessing the strength of reinforced concrete sections the tension in the concrete is usually ignored because it contributes little to member strength.However it provides an important contribution to the performance of members at service loads. Tension stiffening can be modeled at the stress-strain level by use of a post-peak degrading modulus of elasticity as first proposed by the first author in 1971. This paper proposes and evaluates a method to evaluate the post-peak parameters of the tension stiffening model based on bond characteristics between concrete and steel.