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| 基于损伤-断裂力学的钢桥面铺装体系疲劳特性研究 | |
| 引用本文： | 徐勋倩,黄卫,吴国庆.基于损伤-断裂力学的钢桥面铺装体系疲劳特性研究[J].公路交通科技,2006,23(4):71-75,83. |
| 作者姓名： | 徐勋倩 黄卫 吴国庆 |
| 作者单位： | 1. 东南大学,ITS研究中心,江苏,南京,210096;南通大学,建工学院,江苏,南通,226007 2. 东南大学,ITS研究中心,江苏,南京,210096 3. 南通大学,建工学院,江苏,南通,226007 |
| 基金项目： | 南通大学自然科学基金资助项目（03040103） |
| 摘 要： | 基于损伤，断裂力学的方法就钢桥面沥青混合料铺装体系在循环荷栽作用下的力学行为和疲劳损伤特性进行理论分析。采用粘弹性损伤模型的能量转换方法对钢桥面沥青混合料层应力场、应变场及损伤场分布状况和演变规律进行研究，同时，建立了结构的疲劳寿命理论预测公式。最后。通过南京长江第二大桥钢桥面铺装体系疲劳实例分析，验证了预测公式的合理性，并与其他预测方法的结果进行了比较。 |
| 关 键 词： | 损伤-断裂力学 钢桥面 铺装体系 疲劳特性 |
| 文章编号： | 1002-0268（2006）04-0071-05 |
| 收稿时间： | 2004-12-28 |
| 修稿时间： | 2004-12-28 |
Research on Fatigue Characteristic of Steel Bridges Deck Pavement by the Method of Damage-fracture Mechanics |
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| XU Xun-qian,HUANG Wei,WU Guo-qing.Research on Fatigue Characteristic of Steel Bridges Deck Pavement by the Method of Damage-fracture Mechanics[J].Journal of Highway and Transportation Research and Development,2006,23(4):71-75,83. | |
| Authors: | XU Xun-qian HUANG Wei WU Guo-qing |
| Institution: | 1.ITS Research Center of Southeast University, Jiangsu Nanjing 210096, China; 2.Architecture Department of Nantong University, Jiangsu Nantong 226007, China |
| Abstract: | Based on the method of damage-fracture mechanics, the mechanical behavior and fatigue fracture characteristic of asphalt mixture surfacing under repeated load was analyzed.Adopting the viscous-elastic method of energy conversion, the stress, strain and fracture distribution or evolvement patterns of steel hridges deck asphalt mixture surfacing composite structure were explored. At the same time, its fatigue life pre-evaluating formula was proposed.Finally, comparing with other methods, an example of the steel hridges deck pavement of Nanjing Second Yangtze River Bridge, was provided to test the rationality of the pre-evaluating formula. |
| Keywords: | Damage-fracture mechanics Steel bridges Deck pavement Fatigue characteristic |
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