| 水闸温度应力 |
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| 引用本文： | 朱伯芳,吴龙坤,李玥,张国新.水闸温度应力[J].水利水电技术,2009,40(3). |
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| 作者姓名： | 朱伯芳 吴龙坤 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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| 摘 要： | 用三维有限元对水闸温度应力进行了系统的分析,包括施工期水化热引起的应力,气温年变化引起的应力及寒潮引起的应力,这3种温度应力单独作用都不会引起混凝土裂缝,但组合应力可能引起裂缝.文中进一步研究了防止裂缝的技术措施,计算结果表明,采取笔者建议的施工期表面加温方法,就可使裂缝几率显著减小.
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| 关 键 词： | 水闸 温度应力 水化热 气温年变化 寒潮 |
Thermal stresses in sluices |
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| ZHU Bo-fang,WU Long-shen,LI Yue,ZHANG Guo-xin.Thermal stresses in sluices[J].Water Resources and Hydropower Engineering,2009,40(3). |
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| Authors: | ZHU Bo-fang WU Long-shen LI Yue ZHANG Guo-xin |
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| Affiliation: | ZHU Bo-fang,WU Long-shen,LI Yue,ZHANG Guo-xin(China Iustitute of Water Resources and Hydropower Research,Beijing 100038,China) |
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| Abstract: | Thermal stresses in sluices are analysed systematically by 3D FEM,including the stresses due to heat of hydration in construction period,the stresses due to annual variation of air temperature,and the stresses due to cold wave.Each one of them will not induce cracking alone,but the comprehensive action of them will induce cracking in sluices.A measure to prevent cracking is proposed. |
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| Keywords: | sluice thermal stress heat hydration annual variation of air temperature cold wave |
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