| 某工程预应力箱梁温度控制分析 |
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| 引用本文： | 陶水忠,黄继民.某工程预应力箱梁温度控制分析[J].市政技术,2007,25(4):256-258. |
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| 作者姓名： | 陶水忠 黄继民 |
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| 作者单位： | 1. 北京市市政工程研究院,北京,100037
2. 青岛市舜华实业总公司,青岛,266041 |
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| 摘 要： | 应用有限单元法模拟某工程箱梁的施工过程。计算了两种加热养护温度下的混凝土温度场和应力场，指出在恶劣气候条件下，加热养护是必要的但温度不宜过高，同时建议在箱梁两端设置通风口，以防止箱梁降温时在内外表面产生过大的温差。
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| 关 键 词： | 有限单元法 温度控制 通风口 加热养护 |
| 文章编号： | 1009-7767（2007）04-0256-03 |
| 收稿时间： | 2007-03-29 |
| 修稿时间： | 2007-03-29 |
Analysis of Temperature Control of Prestressed Box Girder for a Project |
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| TAO Shui-zhong,HUANG Ji-min.Analysis of Temperature Control of Prestressed Box Girder for a Project[J].Municipal Engineering Technology,2007,25(4):256-258. |
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| Authors: | TAO Shui-zhong HUANG Ji-min |
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| Affiliation: | 1.Beijing Municipal Engineering Academe, Beijing 100037, China; 2. Qingdao Shunhua Industry Parent Company, Qingdao 266041, China |
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| Abstract: | This paper simulated the construction course of a box-beam by FEM, and calculated temperature and stress fields on two conditions of temperature maintained by heating. Furthermore, it is pointed out that temperature maintained by heating is necessary according to the academic calculation for concrete engineering but should not be much too high in bad weather. It is also advised that setting ventilating hole on verge of box-beam to avoid producing too much difference in temperature. |
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| Keywords: | FEM temperature controlling ventilating hole maintaining by heating |
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