| 轻质微膨胀混凝土在拱桥加固中的应用研究 |
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| 引用本文： | 许汉铮,李树东,韩万水.轻质微膨胀混凝土在拱桥加固中的应用研究[J].公路,2005(12):27-32. |
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| 作者姓名： | 许汉铮 李树东 韩万水 |
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| 作者单位： | 长安大学公路学院,西安市,710064;山东省德州市公路局 |
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| 摘 要： | 将自行研究配制的轻质微膨胀混凝土应用于拱肋的加固。推导出了膨胀剂作用下组合截面应力重分布计算公式，并考虑收缩、徐变的效应，对加固后的拱圈应力进行了计算，并与实测值进行了比较。此外，通过荷载试验检验，说明轻质混凝土完全可用于桥梁的主要承重结构。
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| 关 键 词： | 轻质微膨胀混凝土 拱肋加固 膨胀剂作用 收缩徐变 应力 |
| 文章编号： | 0451-0712（2005）12-0027-05 |
| 收稿时间： | 2005-07-08 |
| 修稿时间： | 2005-07-08 |
Research on Aplication of lightweight Light-Expansion Concrete to Strengthening of Arch Bridges |
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| XU Han-zheng,LI Shu-dong,HAN Wan-shui.Research on Aplication of lightweight Light-Expansion Concrete to Strengthening of Arch Bridges[J].Highway,2005(12):27-32. |
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| Authors: | XU Han-zheng LI Shu-dong HAN Wan-shui |
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| Abstract: | In this paper, lightweight light-expansion concrete is applied to the strengthening of arch bridges. Stress formula of combination section is account, and stress of key sections calculated aft actual values measured with strain gauge, it shows deduced, the effect of shrinkage and creep taken er strenthening. that the fomula light-expansion concrete is capable of applying to main structure of By compareing calculate values is right. It is conclude that lightw bridges. into with eight |
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| Keywords: | lightweight light-expansion concrete strengthening of arch rib effect of expansion agent shrinkage and creep stress |
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