| 预应力混凝土连续刚构桥跨中下挠影响因素分析 |
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| 引用本文： | 程海潜,;宗伟,;黎晨,;邓泽华.预应力混凝土连续刚构桥跨中下挠影响因素分析[J].水运科技信息,2014(4):24-26. |
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| 作者姓名： | 程海潜 ;宗伟 ;黎晨 ;邓泽华 |
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| 作者单位： | [1]湖北交通职业技术学院道路系,武汉430079; [2]武汉理工大学交通学院,武汉430063 |
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| 摘 要： | 以某预应力混凝土连续刚构桥为工程背景，比较了不同预应力钢束损失和不同位置预应力钢束损失对箱梁成桥线型的影响，分析了不同预应力损失情况下混凝土徐变对预应力混凝土连续刚构桥成桥线型的影响，指出了预应力混凝土连续刚构桥箱梁挠度与桥梁结构受力状态有关，与桥梁跨径关联不大。
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| 关 键 词： | 连续刚构桥 跨中下挠 徐变 预应力损失 |
Study on Influence Factors of Midspan Sag in Prestressed Concrete Continuous Rigid Bridge |
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| Institution: | Cheng Haiqian , Zong Wei , Li Chen , Deng Zehua (1. Hubei Communication Technical College, Wuhan 430079, China; 2. Wuhan University of Technology, Wuhan 430063, China) |
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| Abstract: | Taking a prestressed concrete continuous rigid bridge as an example, the influence of different prestressed loss and different position of prestressed tendons on the box girder bridge line are compared, the line of box girder by concrete creep in different prestressed loss is also analyzed. The results show that the deflection of prestressed concrete continuous rigid bridge has relation to its stress state and has little relation to its spans. |
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| Keywords: | prestressed concrete continuous rigid bridge midspan sag concrete creep prestressed loss |
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