| 大跨RC有支架施工拱桥砼时效分析 |
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| 引用本文： | 张永水.大跨RC有支架施工拱桥砼时效分析[J].重庆交通大学学报(自然科学版),2005,24(4):31-34,43. |
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| 作者姓名： | 张永水 |
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| 作者单位： | 重庆交通学院,土木建筑学院,重庆,400074 |
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| 摘 要： | 砼时间效应对大跨拱桥结构性能有较大的影响,本文结合许沟大桥的工程实践,分析了砼徐变、收缩对主拱圈的内力与变形以及截面应力重分布的影响,讨论了砼收缩对主拱圈分层浇筑自应力的影响.分析结果可为今后同类桥梁的设计、施工提供指导.
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| 关 键 词： | 大跨度钢筋砼拱桥 砼收缩、徐变 应力重分布 自应力 |
| 文章编号： | 1001-716X(2005)04-0031-04 |
| 修稿时间： | 2004年8月26日 |
Analysis of concrete aging effect in long-span RC arch bridge |
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| ZHANG Yong-shui.Analysis of concrete aging effect in long-span RC arch bridge[J].Journal of Chongqing Jiaotong University,2005,24(4):31-34,43. |
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| Authors: | ZHANG Yong-shui |
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| Abstract: | The aging effect of concrete influences structural behavior of long-span arch. the effects of creep and shrinkage of concrete on inner force, deformation and stress redistribution of main arch, the effects of shrinkage of concrete on self-stress of concreting in lifts are discussed-for example, Xugou bridge. The results can be reference for other bridges. |
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| Keywords: | long-span RC arch creep and shrinkage of concrete stress redistribution self-stress |
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