Uncertainty analysis in fatigue life prediction of self-compacting steel fiber reinforced concrete using evidence theory

被引：0
|
作者：
Tang H. [1 ,2 ]
Chen S. [1 ]
Xue S. [1 ,2 ]
机构：
[1] Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai
[2] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 10期
关键词：
Differential evolution; Evidence theory; Fatigue life; Prediction model; Self-compacting steel fiber reinforced concrete; Uncertainty;
D O I：
10.11990/jheu.201805009
中图分类号：
学科分类号：
摘要：
Fatigue life predictability of steel fiber-reinforced concrete (SCFRC) is difficult, making for inaccuracies in self-compacting. This is mainly caused by the existence of various material parameters and experimental data and model uncertainty. Therefore, in this paper, the uncertainty model of concrete fatigue life prediction based on the S-N curve was built, and a methodology based on evidence theory is presented for uncertainty analysis in fatigue life prediction of concrete, while considering the epistemic uncertainty of model parameters. Based on the experiment of SCFRC with a 0.5% steel fiber dosage, evidence theory and a differential evolution-based computational strategy were applied to quantify and propagate the epistemic uncertainty at all stress levels. Compared with the prediction results of actual fatigue life and probabilistic theoretical method, the efficiency and feasibility of the proposed approach were verified through a comparative analysis of probability theory. © 2019, Editorial Department of Journal of HEU. All right reserved.
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页码：1729 / 1734
页数：5
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