Bearing Capacity of the Corrosion Reinforced Concrete Axial Compression Members

Abstract

based on the relationship between steel rust expansion force and the amount of corrosion, regarding reinforced concrete as a general continuum with the use of integral model, the finite element analysis models of axial compressive members were set up. Concrete units cracking and crushing were considered by the methods of multi-axial stress William-Warnke five-parameter failure criteria and fracture dispersion mode. For axial compression corroded reinforced concrete structures, firstly under the action of rust expansion force produced by steel corrosion, cracks begin to occur around the steel, then column corner steel cracks emerge by the direction of the protective layer and progressively extend to the entire protective layer. With the increasing of the steel corrosion rate, the ultimate bearing capacity reduces. According to the relationship of the corrosion rate and the capacity reduction, a simple method of calculation was established for corrosion axis of the bearing capacity of compression members.

Numerical Study of Concrete: A Mesoscopic Scale Simulation Methodology

“…On the other hand, drawing from other research works aimed to simulate the cracking and crushing of concrete [22][23][24][25][26][27][28], the following constitutive models have been employed by the authors:…”

Numerical Study of Concrete: A Mesoscopic Scale Simulation Methodology

“…Drawing from previous research aimed at simulating concrete cracking and crushing [23][24][25][26][27][28][29], the authors employed the following constitutive models:…”