| 南水北调中线洺河渡槽运行期温度影响及对策 |
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| 引用本文： | 李书群,和秀芬. 南水北调中线洺河渡槽运行期温度影响及对策[J]. 南水北调与水利科技（中英文）, 2006, 4(3): 22-24,33 |
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| 作者姓名： | 李书群 和秀芬 |
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| 作者单位： | 河北省水利水电第二勘测设计研究院,石家庄,050021 |
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| 摘 要： | 洺河渡槽槽身设计采用三槽一联大跨度预应力钢筋混凝土结构,渡槽接近正南北走向,夏季受太阳辐射影响,槽身侧墙表面升温较高,而太阳辐射对槽内水体的影响则不大,造成槽身结构内外较大温差,使槽身横向结构产生较大的温度应力.文章对各种条件下的温度影响进行了分析,结合槽身结构耐久性要求,提出采用保温防水材料,消减太阳辐射升温的影响,使槽身迎水结构的设计满足一类全预应力的要求.并根据温度场的分布特点,对工程运行管理提出指导性意见,从而保证结构的运行安全和耐久性要求.
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| 关 键 词： | 温度边界 温度应力 保温隔热材料 |
| 文章编号： | 1672-1683（2006）03-0024-03 |
| 收稿时间： | 2006-05-16 |
| 修稿时间： | 2006-05-16 |
Temperature Influence and Countermeasure in the Minghe Aqueduct in the Middle Route Project of the South-to-North Water Transfer |
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| LI Shu-qun,HE Xiu-fen. Temperature Influence and Countermeasure in the Minghe Aqueduct in the Middle Route Project of the South-to-North Water Transfer[J]. South-to-North Water Transfers and Water Science & Technology, 2006, 4(3): 22-24,33 |
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| Authors: | LI Shu-qun HE Xiu-fen |
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| Abstract: | The temperature influence under all conditions is analyzed in this paper. And the watertight and heat insulating material is presented to reduce the influence of the sun radiation. It can adapt to the demand of the structure endurance and can meet the challenge of the first full prestressing. Based on the distribution characteristics of the temperature field, the guiding notion about project operation is presented, which can guarantee the safety in operation and endurance. |
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| Keywords: | temperature boundary temperature stress the insulating material |
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