| 重力坝运行期年变化温度场引起的应力 |
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| 引用本文： | 朱伯芳,吴龙珅,李玥,张国新.重力坝运行期年变化温度场引起的应力[J].水利水电技术,2007,38(9):21-24. |
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| 作者姓名： | 朱伯芳 吴龙珅 李玥 张国新 |
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| 作者单位： | 中国水利水电科学研究院,北京,100038 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金雅砻江联合基金重点项目 |
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| 摘 要： | 气温和水温的年变化在重力坝内会引起相当大的拉应力，是重力坝在运行期产生裂缝的重要原因，但目前还缺乏一套实用的计算方法，笔者提出了一套计算公式，可用以计算不同表面保温条件下气温和水温年变化在重力坝内引起的应力并从而计算表面保温的效果。
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| 关 键 词： | 重力坝 气温 水温 年变化 温度应力 表面保温 |
| 文章编号： | 1000-0860（2007）09-0021-04 |
| 修稿时间： | 2007-05-17 |
Thermal stresses of concrete gravity dam in the period of operation caused by annual variations of air and water temperatures |
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| ZHU Bo-fang,WU Long-shen,LI Yue,ZHANG Guo-xin.Thermal stresses of concrete gravity dam in the period of operation caused by annual variations of air and water temperatures[J].Water Resources and Hydropower Engineering,2007,38(9):21-24. |
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| Authors: | ZHU Bo-fang WU Long-shen LI Yue ZHANG Guo-xin |
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| Affiliation: | China Institute of Water Resources and Hydropower Research, Beijing 100038, China |
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| Abstract: | Remarkable tensile stresses may be caused by the annual variations of air arid water temperatures in the operation period of a gravity dam which may lead to cracks. A set of formulas are given in this paper for computing these stresses and estimating the effect of superficial thermal insulation. |
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| Keywords: | gravity dam air temperature water temperature annual variation thermal stress superficial thermal insulation |
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