Seismic resistance prediction of corroded S400 (BSt420) reinforcing bars
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 5 February 2018
Abstract
Purpose
Structures in seismic areas, during their service lifetime, are subjected to numerous seismic loads that certainly affect their structural integrity. The degradation of these structures, to a great extent, depends on the scale of seismic events, the steel mechanical performance on reversal loads and its resistance to corrosion phenomena. The paper aims to discuss these issues.
Design/methodology/approach
Based on the experimental results of seismic steel behavior S400 (BSt III), which was widely used in the past years, a prediction study of seismic steel behavior was conducted in the current study. This prediction on behavior of both reference and corroded steel was succeeded through a simulation of experimental low cycle fatigue conditions (LCF – strain controlled).
Findings
At the same time, the present study analyses fatigue factors (ef, a, fSR, ed, ep, R, b) that define their inelastic relation between tension – strain and a prediction model on behavior of both reference and corroded steel rebar, in seismic loads conditions (LCF), is proposed.
Originality/value
Moreover, this study dealt with the synergy of corrosion factor and the existence of superficial ribs (ribbed and smoothed) in seismic behavior of steel bar S400 (BSt420). The S-N curves that are exported can be resulted in a first attempt of prediction of anti-seismic behavior on reinforced concrete structures with this the same steel class.
Keywords
Citation
Apostolopoulos, C., Konstantopoulos, G. and Koulouris, K. (2018), "Seismic resistance prediction of corroded S400 (BSt420) reinforcing bars", International Journal of Structural Integrity, Vol. 9 No. 1, pp. 119-138. https://doi.org/10.1108/IJSI-02-2017-0008
Publisher
:Emerald Publishing Limited
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