| 活性粉末混凝土人行天桥试设计研究 |
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| 引用本文： | 黄卿维,吴永银,杜任远,陈宝春,陈宜言,吴庆雄.活性粉末混凝土人行天桥试设计研究[J].广西大学学报(自然科学版),2012(4):751-756. |
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| 作者姓名： | 黄卿维 吴永银 杜任远 陈宝春 陈宜言 吴庆雄 |
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| 作者单位： | 武汉理工大学材料科学与工程学院;福州大学土木工程学院;深圳市市政设计研究院有限公司 |
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| 基金项目： | 科技部国际科技合作计划项目(2009DFA72220);福建省发展与改革委员会项目;福州大学科技发展基金项目(2011-XQ-27) |
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| 摘 要： | 活性粉末混凝土(RPC)是一种抗压强度高且韧性、耐久性好的水泥基复合材料,应用于人行天桥,具有经济、美观、耐久性好等特点。以主跨47 m的某人行天桥为原型,进行了RPC人行天桥试设计。分析结果表明,与钢桥相比,RPC桥性价比较高,主梁材料费用为钢桥的61.0%;与预应力混凝土(PC)桥相比,结构受力性能有较大的提高,主梁混凝土和预应力筋用量减少56.4%和18.2%,结构自重减轻53.9%。因此,RPC人行天桥具有较大的应用优势。
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| 关 键 词： | 人行天桥 活性粉末混凝土 试设计 受力性能 材料费用 |
Trial-design of a reactive powder concrete pedestrian bridge |
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| HUANG Qing-wei,WU Yong-yin,DU Ren-yuan,CHEN Bao-chun,CHEN Yi-yan,WU Qing-xiong.Trial-design of a reactive powder concrete pedestrian bridge[J].Journal of Guangxi University(Natural Science Edition),2012(4):751-756. |
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| Authors: | HUANG Qing-wei WU Yong-yin DU Ren-yuan CHEN Bao-chun CHEN Yi-yan WU Qing-xiong |
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| Institution: | 1.College of Material Science and Engineering,Wuhan University of Technology,Wuhan 430070,China; 2.College of Civil Engineering,Fuzhou University,Fuzhou 350108,China; 3.Shenzhen Municipal Design and Research Institute Company,Shenzhen 518035,China) |
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| Abstract: | Reactive powder concrete(RPC) is a cement-based composite material with super-high compressive strength,high toughness and good durability,which could be used to build pedestrian bridge and make the bridge cost-efficient,aesthetic and durable.Taking a pedestrian bridge with a main span of 47 m as the prototype,a trial design of RPC pedestrian bridge was conducted.Analysis results show that the RPC pedestrian bridge has a better cost performance and the material of its girder cost is 39% less than that of the steel pedestrian bridge.Compared with the prestressed concrete(PC) pedestrian bridge,RPC pedestrian bridge has better mechanical performance,and the consumptions of concrete and steel are decreased by 56.4% and 18.2%,respectively,resulting in a reduction of 53.9% of the self-weight.Therefore,RPC pedestrian bridge has considerable application advantages. |
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| Keywords: | pedestrian bridge reactive powder concrete trial design structural behaviors material cost |
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