| 混凝土低周疲劳强度衰减及寿命预测方法研究 |
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| 引用本文： | 赵造东,张立翔,李泽.混凝土低周疲劳强度衰减及寿命预测方法研究[J].力学与实践,2011,33(2):35-38. |
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| 作者姓名： | 赵造东 张立翔 李泽 |
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| 作者单位： | 1. 中国华能集团公司基建部;2. 昆明理工大学工程力学系; |
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| 基金项目： | 国家自然科学基金(51009074); 云南省应用基础研究计划(2008ZC028M)资助项目 |
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| 摘 要： | 根据低周疲劳的特点, 对混凝土$S$-$N$曲线进行了适当简化, 在此基础上提出了一种
混凝土低周疲劳强度衰减模型及寿命预测方法, 并通过疲劳试验确定了相关参数. 与实测的
疲劳变形发展过程及Miner准则对比分析得出, 提出的模型及方法适用于混凝土低周疲
劳, 能较好地反映出混凝土的低周疲劳损伤机理.
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| 关 键 词： | 混凝土 低周疲劳 强度衰减 寿命预测 |
| 收稿时间： | 2010-10-27 |
A MODEL OF STRENGTH DEGRADATION AND THE PREDICTOR METHOD OF LIFE PERIOD FOR CONCRETE UNDER LOW-CYCLE FATIGUE LOADING |
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| ZHAO Zaodong
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ZHANG Lixiang
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LI Ze.A MODEL OF STRENGTH DEGRADATION AND THE PREDICTOR METHOD OF LIFE PERIOD FOR CONCRETE UNDER LOW-CYCLE FATIGUE LOADING[J].Mechanics and Engineering,2011,33(2):35-38. |
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| Authors: | ZHAO Zaodong ZHANG Lixiang LI Ze |
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| Institution: | ZHAO Zaodong~(2)) ZHANG Lixiang LI Ze (Department of Engineering Mechanics Kunming University of Science and Technology,Kunming 650093,China) |
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| Abstract: | According to the characteristic of low-cycle fatigue,the equation of S-N curve of concrete is simplified. A new model of strength degradation and the predictor method of life period for concrete under low-cycle fatigue loading are proposed,and the necessary parameters are obtained by the fatigue test.By comparison with the evolution of the actual strain and the Miner rule,the model and method are shown to reflect the damage of low-cycle fatigue of concrete correctly. |
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| Keywords: | concrete low-cycle fatigue strength degradation life prediction |
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