| 多点支撑加固坦拱桥技术研究 |
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| 引用本文： | 杜建华,吴娇媚,卢颖.多点支撑加固坦拱桥技术研究[J].价值工程,2011,30(6):123-124. |
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| 作者姓名： | 杜建华 吴娇媚 卢颖 |
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| 作者单位： | 重庆交通大学,重庆,400074 |
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| 摘 要： | 矢跨比较小的坦拱桥,受力形式带有梁式桥的倾向,水平推力较陡拱大,受载弯矩集中于主拱拱顶至3/8、5/8区段,因此造成对此种桥型加固难度增大。有必要提出有效措施进行加固整治。本文结合公路坦拱桥加固工程实例,较为详细地介绍了多点支撑加固坦拱的设计、施工技术。实践证明,该加固增强技术可有效提高坦拱桥的承载能力且安全可靠,具有较大的技术、经济和社会效益,应用前景广阔。
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| 关 键 词： | 加固 坦拱 增设支撑 承载力 |
Research on Technology of Multi-point Supporting Strengthening Fiat Arch Bridge |
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| Du Jianhua,Wu Jiaomei,Lu Ying.Research on Technology of Multi-point Supporting Strengthening Fiat Arch Bridge[J].Value Engineering,2011,30(6):123-124. |
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| Authors: | Du Jianhua Wu Jiaomei Lu Ying |
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| Institution: | Du Jianhua,Wu Jiaomei,Lu Ying(Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Strengthening flat arch bridge becomes more difficult,because its stress is similar to the beam bridge's and the horizontal thrusts are more than the steep arch bridge's,moreover,the moment of the arch focuses on the segment from midspan to 3/8(5/8) span.It's necessary to make effective measures for strengthening.This paper introduces the design and construction technology of multi-point supporting in detail combining with engineering examples of flat arch bridge strengthening.Practice shows that the streng... |
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| Keywords: | strengthen flat arch bridge extension supporting bearing capacity |
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