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| 钢桥疲劳裂纹的扩展研究及寿命评估 | |
| 引用本文： | 周延军,储何龙,肖盛燮.钢桥疲劳裂纹的扩展研究及寿命评估[J].西部交通科技,2013(9):66-69,75. |
| 作者姓名： | 周延军 储何龙 肖盛燮 |
| 作者单位： | 1. 重庆城建控股(集团)有限责任公司,重庆,400013 2. 重庆交通建设(集团)有限责任公司,重庆,401120 3. 重庆交通大学土木建筑学院,重庆,400074 |
| 基金项目： | 国家自然科学基金"基于灾变链式理论的多种灾害深化规律探索" |
| 摘 要： | 钢桥的疲劳破坏是由于微裂纹在循变荷载作用下萌生、发展而来。文章利用损伤力学分析钢桥构件的微观裂纹和宏观裂纹的形态、特征及发展过程，建立有限元模型分析裂纹的发展状态，并通过数学模型评估了钢桥的剩余寿命。 |
| 关 键 词： | 损伤力学 疲劳裂纹 寿命评估 |
Propagation Studies and Life Assessment of Steel Bridge Fatigue Cracks |
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| ZHOU Yan-jun , CHU He-long , XIAO Sheng-xie.Propagation Studies and Life Assessment of Steel Bridge Fatigue Cracks[J].Western China Communication Science & Technology,2013(9):66-69,75. | |
| Authors: | ZHOU Yan-jun CHU He-long XIAO Sheng-xie |
| Institution: | 1 .Chongqi ng Urban Constructi on Holding (Group) Co., Ltd., Chongqi ng, 400013; 2.Chongqing Communications Construction Group,Chongqing, 401120;3.Schoo of Civil Engineering and Architecture of Chongqing Jiaotong University, Chongqing 400074) |
| Abstract: | The fatigue damage of steel bridge is caused due to the initiation and evolvement of micro- cracks under the impact of varying loads. The article used the damage mechanics to analyze the morphology, characteristics and develop- ment process of microscopic cracks and macroscopic cracks of steel bridge components, established the finite element model to analyze the development state of cracks, and through the mathematical models it assessed the remaining life of steel bridge. |
| Keywords: | Damage mechanics Fatigue crack Life assessment |
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