| 钢筋混凝土空心梁疲劳性能试验研究 |
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| 引用本文： | 蒋丽忠,伍振宇,吴忠河,朱红兵.钢筋混凝土空心梁疲劳性能试验研究[J].铁道科学与工程学报,2010,7(3). |
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| 作者姓名： | 蒋丽忠 伍振宇 吴忠河 朱红兵 |
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| 作者单位： | 中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075 |
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| 基金项目： | 交通部西部交通科技资助项目(200631800019) |
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| 摘 要： | 对6根大比例钢筋混凝土空心梁进行静载和疲劳性能试验研究,每根梁取不同荷载幅度,研究不同疲劳次数下梁受压区混凝土和受拉区的钢筋的应变、梁的跨中挠度以及裂缝发展情况,得到不同的疲劳荷载应力幅作用下钢筋混凝土空心梁的疲劳寿命;根据试验结果拟合得到钢筋混凝土空心梁疲劳荷载作用下的S-N曲线,为由钢筋混凝土空心梁构成的桥梁结构寿命预测提供依据。对钢筋混凝土空心梁疲劳破坏后的钢筋进行静力学性能试验研究,了解钢筋混凝土空心梁疲劳破坏后钢筋力学性能的退化情况。
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| 关 键 词： | 钢筋混凝土空心梁 疲劳试验 疲劳累积损伤 疲劳寿命 |
Experimental study on fatigue of reinforced concrete hollow beams |
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| JIANG Li-zhong
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WU Zhen-yu
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WU Zhong-he
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ZHU Hong-bing.Experimental study on fatigue of reinforced concrete hollow beams[J].Journal of Railway Science and Engineering,2010,7(3). |
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| Authors: | JIANG Li-zhong WU Zhen-yu WU Zhong-he ZHU Hong-bing |
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| Institution: | JIANG Li-zhong,WU Zhen-yu,WU Zhong-he,ZHU Hong-bing(School of Civil and Architectural Engineering,Central South University,Changsha 410075,China) |
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| Abstract: | Static loading and fatigue tests were done on 6 reinforced concrete hollow beams with each of them under different load ranges.the concrete strain in the compression zone and the steel strain in the tension zone,mid span deflection and crack development under different fatigue times were studied.the service life under different fatigue load ranges was investigated.The data obtained under fatigue loading into S-N curves were fitted.These provided the basis for the life prediction of bridges that are made by ... |
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| Keywords: | reinforced concrete hollow beams fatigue test cumulative fatigue damage fatigue life |
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