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首页> 外文期刊>International journal of structural integrity >Seismic resistance prediction of corroded S400 (BSt420) reinforcing bars
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Seismic resistance prediction of corroded S400 (BSt420) reinforcing bars

机译：S400（BSt420）腐蚀钢筋的抗震能力预测

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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 HI), 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,f_(SR), 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.
机译：目的-地震区​​域内的结构在使用寿命期间会承受无数地震载荷，这些载荷肯定会影响其结构完整性。这些结构的退化在很大程度上取决于地震事件的规模，钢在反向载荷下的机械性能及其对腐蚀现象的抵抗力。本文旨在讨论这些问题。设计/方法/方法-根据近年来广泛使用的地震钢性能S400（BSt HI）的实验结果，在当前研究中进行了地震钢性能的预测研究。通过对实验性低循环疲劳条件（LCF-应变控制）的模拟，成功地完成了对参考钢和腐蚀钢性能的预测。研究结果-同时，本研究分析了疲劳因子（ef，a，f_（SR），ed，ep，R，b），这些因子定义了它们在张力-应变之间的非弹性关系以及关于参考和行为的预测模型提出了在地震载荷条件下（LCF）的锈蚀钢筋。独创性/价值-此外，本研究还研究了腐蚀因子与S400钢筋（BSt420）的地震行为中表面肋（肋状和光滑型）的协同作用。导出的S-N曲线可以首次尝试预测相同钢种的钢筋混凝土结构的抗震性能。

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