| 钢纤维混凝土桥面铺装疲劳性能试验研究 |
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| 引用本文： | 牟廷敏,丁庆军,周孝军,范碧琨.钢纤维混凝土桥面铺装疲劳性能试验研究[J].武汉水运工程学院学报,2012(5):988-991. |
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| 作者姓名： | 牟廷敏 丁庆军 周孝军 范碧琨 |
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| 作者单位： | [1]四川I省交通运输厅公路规划勘察设计研究院,成都610041 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 |
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| 基金项目： | 四川省交通运输厅科技支撑项目资助（批准号：2009A11-1） |
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| 摘 要： | 为研究＂剪力件＋钢筋网＋普通混凝土＂和＂剪力件＋钢纤维混凝土＂2种桥面铺装方案的抗疲劳性能,设计了5个桥面铺装结构模型,探讨了钢纤维、钢筋网、剪力件间距等对混凝土桥面铺装疲劳性能的影响规律.试验表明：剪力件间距对试件疲劳受力性能影响不明显;钢纤维混凝土结合剪力件的铺装方案克服了钢筋网难以定位的弱点,其抗疲劳性优于普通混凝土铺设钢筋网的铺装方案,且钢纤维能很好的限制混凝土中微裂缝的形成与发展.建议可以在混凝土桥面铺装层中取消钢筋网,而采用钢纤维混凝土结合剪力件的桥面铺装方案.
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| 关 键 词： | 钢纤维混凝土 剪力件 混凝土桥面铺装 疲劳性能 破坏形式 |
Fatigue Performance of Steel Fiber Reinforced Concrete Bridge Deck Pavement |
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| Authors: | Mou Tingmin Ding Qingjun Zhou Xiaojun Fan Bikun |
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| Institution: | Mou Tingmin Ding Qingjun Zhou Xiaojun Fan Bikun (Sichuan Provincial Transport Department Highway Planning, Survey, Design and Research Institute, Chengdu 610041, China) (State Key Laboratory of Silicate Materials for Architectures, WUT, Wuhan 430070, China) |
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| Abstract: | ＂Studs and steel mesh and common concrete＂ and ＂Studs and steel fiber reinforced concrete＂ were two schemes widely used in concrete bridge deck pavement. In order to explore the anti-fatigue performance of the two schemes, five structure models were designed and steel fiber, steel mesh and studs spacing were the dominant variables. Experiments show that studs spacing had no consistent effect on the fatigue performance of the specimens. The second program avoided the problem to locate the steel mesh. And steel fiber reinforced concrete exhibit excellent performance of anti-crack, even if there were cracks but did not collapse. Finally, the second scheme was proposed to adopt in the concrete bridge deck pavement. |
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| Keywords: | steel fiber reinforced concrete studs concrete bridge deck pavement fatigue perform- ance failure mode |
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