| 基于Corten-Dolan累积损伤准则的等效等幅疲劳应力幅值计算方法 |
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| 引用本文： | 朱红兵,余志武,蒋丽忠. 基于Corten-Dolan累积损伤准则的等效等幅疲劳应力幅值计算方法[J]. 公路交通科技, 2010, 27(1) |
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| 作者姓名： | 朱红兵 余志武 蒋丽忠 |
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| 作者单位： | 1. 中南大学,土木建筑学院,湖南,长沙,410075;武汉科技大学,城市建设学院,湖北,武汉,430070
2. 中南大学,土木建筑学院,湖南,长沙,410075 |
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| 基金项目： | 交通部西部交通建设科技资助项目(200631800019) |
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| 摘 要： | 利用Miner线性累积损伤准则和Corten-Dolan累积损伤准则,按照多级变幅荷载或随机荷载损伤度相等的原则,推导出了等效的等幅疲劳应力幅值计算公式,介绍了该公式应用于疲劳细节评估或疲劳寿命估算的方法。利用钢筋混凝土梁疲劳试验得到的S-N曲线和S-N方程,针对同批3根钢筋混凝土梁的随机疲劳试验结果,对该公式及方法进行了检验。结果表明,该公式计算结果具有较高的精度,与试验结果较接近且偏安全。该公式操作较方便,适合工程应用。
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| 关 键 词： | 桥梁工程 等效等幅疲劳应力幅 Corten-Dolan累积损伤准则 钢筋混凝土梁 随机荷载 |
Calculation Method of Equivalent Fatigue Stress Range Based on Corten-Dolan Accumulative Damage Rule |
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| ZHU Hongbing,YU Zhiwu,JIANG Lizhong. Calculation Method of Equivalent Fatigue Stress Range Based on Corten-Dolan Accumulative Damage Rule[J]. Journal of Highway and Transportation Research and Development, 2010, 27(1) |
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| Authors: | ZHU Hongbing YU Zhiwu JIANG Lizhong |
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| Affiliation: | 1.School of Civil and Architecture;Central South University;Changsha Hunan 410075;China;2.School of Urban Construction;Wuhan University of Science and Technology;Wuhan Hubei 430070;China |
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| Abstract: | According to damaging degree equivalent principle of multilevel amplitude load or random amplitude load,the calculation formula of equivalent fatigue stress amplitude range was derived by using linear Miner accumulative damage rule and Corten-Dolan accumulative damage rule.The method of applying the formula to fatigue detail or fatigue life evaluations was introduced.By utilizing the S-N curve and S-N equation from RC beams fatigue experiment,the formula and the method were verified based on the random ampl... |
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| Keywords: | bridge engineering equivalent fatigue stress range Corten-Dolan accumulative damage rule reinforcement concrete beam random load |
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