| 循环荷载下路面用钢纤维混凝土的弯曲疲劳研究 |
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| 引用本文： | 谢建斌,何天淳,程赫明,张小辉.循环荷载下路面用钢纤维混凝土的弯曲疲劳研究[J].兰州理工大学学报,2004,30(2):104-109. |
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| 作者姓名： | 谢建斌 何天淳 程赫明 张小辉 |
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| 作者单位： | 昆明理工大学,建筑工程学院,云南,昆明,650093;中国人民解放军后勤工程学院,重庆,400016 |
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| 基金项目： | 云南省自然科学基金(2001A0008M),云南省教育厅科学研究项目(0012333) |
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| 摘 要： | 对路面用钢纤维混凝土材料的弯曲疲劳进行了试验研究.应用疲劳寿命统计学理论确定了路面用钢纤维混凝土材料弯曲疲劳寿命符合两参数威布尔分布,建立了考虑存活率的P lgS lgN双对数疲劳方程及P S lgN单对数疲劳方程.对路面用钢纤维混凝土材料在循环荷载作用下的弯曲疲劳变形和抗折弹性模量衰减规律进行了研究.结果表明,路面用钢纤维混凝土材料的抗弯性能和弯曲疲劳寿命明显高于普通混凝土材料.
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| 关 键 词： | 钢纤维混凝土 弯曲疲劳 疲劳寿命 变形 抗折弹性模量 |
| 文章编号： | 1000-5889(2004)02-0104-06 |
| 修稿时间： | 2003年2月22日 |
Investigation flexural fatigue behavior of steel fiber reinforced concrete for pavement surface stratum under cyclic load |
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| XIE Jian-bin,HE Tian-chun,CHENG He-ming,ZHANG Xiao-hui.Investigation flexural fatigue behavior of steel fiber reinforced concrete for pavement surface stratum under cyclic load[J].Journal of Lanzhou University of Technology,2004,30(2):104-109. |
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| Authors: | XIE Jian-bin HE Tian-chun CHENG He-ming ZHANG Xiao-hui |
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| Institution: | XIE Jian-bin~1,HE Tian-chun~1,CHENG He-ming~1,ZHANG Xiao-hui~2 |
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| Abstract: | The flexural fatigue property of steel fiber reinforced concrete material for the pavement surface stratum is investigated experimentally. Using fatigue life statistics theory, it is found that the fatigue life of steel fiber reinforced concrete is suited to the Weibull distribution with two parameters. Then, the fatigue equations in both the double-logarithm and single logarithm forms are established. The flexural deformation behaviors and the degradation law of the breaking resistant elasticity modulus during flexural fatigue process are studied. The results show that the flexure resistant property and the fatigue life of steel fiber reinforced concrete is much more nicer than that of common concrete. |
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| Keywords: | steel fiber reinforced concrete flexural fatigue fatigue life deformation breaking resistant elasticity modulus |
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