Nonlinear Analysis of Plane Stress State Reinforced Concrete Under Short Term Monotonic Loading

Hu, H-T.; Schnobrich, William C.

Permalink

https://hdl.handle.net/2142/14164 Copy

Description

Title

Nonlinear Analysis of Plane Stress State Reinforced Concrete Under Short Term Monotonic Loading

Author(s)

• Hu, H-T.
• Schnobrich, William C.

Issue Date

1988-04

Keyword(s)

• Reinforced concrete
• nonlinear analysis
• Strains and stresses -- Plane
• Finite element analysis

Abstract

Reinforced concrete demonstrates a highly nonlinear behavior caused by cracking, aggregate interlock, bond slip, dowel action, shrinkage, creep, etc. Because its behavior can involve so many nonlinear phenomena interacting with one another, the formulation of rational analytical procedures is very difficult. Today with the help of computer, the finite element method offers a powerful tool for studying reinforced concrete structures. However, the success of such analyses depends on thorough understanding and modelling of the composite material behavior. In this study, an elastic strain hardening plastic model is derived for concrete. The stress-strain behavior for reinforcement is modeled as an idealized bilinear curve. Dowel action of steel is neglected and perfect bond is assumed between concrete and steel. For cracked reinforced concrete, the smeared crack system is adopted. Two types of crack models, fixed crack model and rotating crack model, are formulated and tension stiffening, stress degrading effect parallel to crack direction and shear retention have all been included. Through a layering approach these material models are further extended to model the flexural behavior of reinforced concrete structures. These reinforced concrete material models have been tested against the experimental results and it is demonstrated that they are suitable to model the behavior of reinforced concrete structures.

Publisher

University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.

Series/Report Name or Number

Civil Engineering Studies SRS-539

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/14164

Sponsor(s)/Grant Number(s)

National Science Foundation Research Grant CEE 83-00226

Owning Collections