| 基于断裂力学方法的冷再生基层材料疲劳寿命研究 |
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| 引用本文： | 张海,臧芸,焦莉,柴旺,李炜光.基于断裂力学方法的冷再生基层材料疲劳寿命研究[J].筑路机械与施工机械化,2012,29(4):60-63. |
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| 作者姓名： | 张海 臧芸 焦莉 柴旺 李炜光 |
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| 作者单位： | 1. 沈阳建筑大学土木工程学院,辽宁沈阳,110168
2. 长安大学材料科学与工程学院,陕西西安,710064 |
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| 基金项目： | 交通部西部交通建设科技项目（2009318812069） |
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| 摘 要： | 利用断裂力学方法对冷再生基层材料的疲劳裂纹扩展进行分析,选择合适的断裂力学公式及参数,进而推导出疲劳寿命预估方程,分析方程中参数的取值并给出算例.通过算例得到的结果对影响疲劳寿命的因素进行分析,并与通过试验得到的数据进行对比.结果表明,用断裂力学方法预测含裂缝冷再生基层材料的疲劳寿命更合理.
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| 关 键 词： | 断裂力学 疲劳寿命 参数 寿命预估方程 |
Research on Fatigue Life of Cold Recycling Base Material Based on Fracture Mechanics Method |
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| ZHANG Hai
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ZANG Yun
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JIAO Li
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CHAI Wang
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LI Wei-guang.Research on Fatigue Life of Cold Recycling Base Material Based on Fracture Mechanics Method[J].Road Machinery & Construction Mechanization,2012,29(4):60-63. |
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| Authors: | ZHANG Hai ZANG Yun JIAO Li CHAI Wang LI Wei-guang |
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| Institution: | 1.School of Civil Engineering,Shenyang Construction University,Shenyang 110168,Liaoning,China 2.School of Materials Science and Engineering,Chang＇an University,Xi＇an 710064,Shaanxi,China) |
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| Abstract: | The method of fracture mechanics was used to analyse the propagation of fatigue cracks of cold recycling base material.The suitable fracture mechanics formula and parameters were chosen and then the fatigue life forecast equation was deduced.The parameters determination method was analysed and the example was giren.The conclusion was gained through comparing with the database obtained from the tests.The results show that it is more reasonable to forecast the fatigue life of materials of cracked cold recycling base based on the method of fracture mechanics. |
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| Keywords: | fracture mechanics fatigue life parameter life forecast equation |
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