Stress-Block Parameters for Unconfined and Confined Concrete Based on a Unified Stress-Strain Model Academic Article

abstract

• Equations to obtain equivalent rectangular stress-block parameters for unconfined and confined concrete are derived for rapid (hand) analysis and design purposes. To overcome a shortcoming of existing commonly used stress-strain models that are not easy to integrate, a new stress-strain model is proposed and validated for a wide range of concrete strengths and confining stresses. The efficacy of the equivalent rectangular stress-block parameters is demonstrated for hand calculations in predicting key moment-curvature results for a confined concrete column. Results are compared with those obtained from a computational fiber-element analysis using the proposed stress-strain model and another widely used existing model; good agreement between the two is observed. 2011 ASCE.

authors

• Mander, John

published proceedings

• JOURNAL OF STRUCTURAL ENGINEERING

author list (cited authors)

• Karthik, M. M., & Mander, J. B.

citation count

• 75

complete list of authors

• Karthik, Madhu M||Mander, John B

publication date

• February 2011

publisher

• American Society of Civil Engineers (ASCE)  Publisher

keywords

• Concrete
• Confined Concrete
• Moment Curvature
• Stress Blocks
• Stress Strain

Digital Object Identifier (DOI)

• 10.1061/(ASCE)ST.1943-541X.0000294

start page

• 270

end page

• 273

volume

• 137

issue

• 2

URL

• http%3A%2F%2Fdx.doi.org%2F10.1061%2F%28asce%29st.1943-541x.0000294