| 钢桥荷载谱中高荷载对疲劳裂纹扩展的影响 |
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| 引用本文： | 钟安,沈先荣.钢桥荷载谱中高荷载对疲劳裂纹扩展的影响[J].土木建筑与环境工程,1995,17(2):15-22. |
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| 作者姓名： | 钟安 沈先荣 |
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| 作者单位： | 重庆建筑大学，杭州城建学校，昆明工学院 |
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| 摘 要： | 陈述了在随机加载条件下，Ｒａｙｌｅｉｇｈ分布荷载谱中高荷载对１６Ｍｎ钢疲劳裂纹扩展影响的研究。实验表明，在比较接近钢桥服役条件的荷载谱中，高荷载循环加速了疲劳裂纹扩展，缩短了裂纹扩展寿命。
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| 关 键 词： | 钢桥 高载荷 疲劳裂纹 荷载谱 扩展 影响 |
EFFECT OF HIGH LOADS IN THE BRIDGE LOAD SPECTRUM ON FATIGUE CRACK GROWTH OF 16 Mn STEEL |
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| Zhong An,Shen Xianrong.EFFECT OF HIGH LOADS IN THE BRIDGE LOAD SPECTRUM ON FATIGUE CRACK GROWTH OF 16 Mn STEEL[J].土木建筑与环境工程,1995,17(2):15-22. |
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| Authors: | Zhong An Shen Xianrong |
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| Affiliation: | Zhong An;Shen Xianrong(Chongqing Jianzhu University)(Hangzhou School of Urban Construction)Fang Jin(Kunming Institute of Technology) |
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| Abstract: | This paper studies an effect of high loads in Rayleigh distribution random load-ing on fatigue crack growth wi th 16 Mn steel compact tenion specimen,The results show that thehigh loads in the load spectrum close to service load of steel bridges accelerate crack growth and re-duce crack growth life,Lives predicted with constant amplitude da/dn data and equivalent loads arequite in agreement with test lives. |
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| Keywords: | fatigue test Rayleigh distribution random loading steel bridge crackgrowth |
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