Nonlinear analysis of plane-stress-state reinforced concrete under short-term monotonic loading

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6972461

Hu, H T

Today, with the help of the computer, the finite-element method offers a powerful tool for studying reinforced-concrete structures. Here, an elastic strain-hardening plastic model, which includes yield functions, isotropic hardening rule, associated and nonassociated flow rules, and equivalent uniaxial stress-strain curves is derived for plain 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 approach is adopted. Two types of crack models (fixed-crack and rotating-crack models) are formulated and various options such as tension stiffening, stress degrading effect parallel to crack direction and shear retention have been included in them. Finally, a layering concept to simulate reinforced-concrete sections is adopted, and through this approach the proposed material models can be further extended. The proposed reinforced-concrete-material models were tested against experimental results, and it is demonstrated that they are suitable to model the behavior of plain concrete and cracked reinforced concrete.

• Research Organization: Illinois Univ., Urbana, IL (USA)
• OSTI ID: 6972461
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
BUILDING MATERIALS
COMPOSITE MATERIALS
COMPUTERIZED SIMULATION
CONCRETES
CRACKS
FINITE ELEMENT METHOD
MATERIALS
MATHEMATICAL MODELS
NUMERICAL SOLUTION
REINFORCED CONCRETE
REINFORCED MATERIALS
SIMULATION
STRESS ANALYSIS