| 钢衬钢筋混凝土压力管道混凝土裂缝温度张合量数学模型 |
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| 引用本文： | 董哲仁. 钢衬钢筋混凝土压力管道混凝土裂缝温度张合量数学模型[J]. 水利学报, 1996, 0(11): 1-5,13 |
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| 作者姓名： | 董哲仁 |
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| 作者单位： | 中国水利水电科学研究院 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 水电站运行期内因温度变化引起民钢衬钢筋混凝土压力管道混凝土径向裂缝的张合变化，是混凝土裂后的特征的重要方面，本文运用热弹性交互定量导出径向裂缝温度张合量的公式，该数学模型糖度较高而且简捷方便，可供设计工程师使用。
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| 关 键 词： | 混凝土 压力管道 裂缝 温度 张合量 钢筋混凝土 |
Mathematical model for the opening and closingof the cracks on the wall of steel lined reinforcedconcrete penstocks due to thermal load |
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| Dong Zheren. Mathematical model for the opening and closingof the cracks on the wall of steel lined reinforcedconcrete penstocks due to thermal load[J]. Journal of Hydraulic Engineering, 1996, 0(11): 1-5,13 |
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| Authors: | Dong Zheren |
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| Abstract: | The thermo-elastic reciprocal theorem is applied to deduce the formulas for calculating the width of radial crack due to thermal load. Based on the calculated results of the crack width for internal pressure, the circumferential displacement of the outer surface of the cylindrical concrete liner due to the temperature difference between outside and inside can be derived. Thus, the amount of radial crack can be estimated. Finally, The magnitude of the opening and closing of the cracks due to the variation of temperature can be calculated. |
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| Keywords: | mathematical model thermo-elastic reciprocal theorem opening and closing of cracks temperature difference. |
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