| 考虑日照的碾压混凝土重力坝施工期温度仿真 |
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| 引用本文： | 常晓林,刘杏红,魏斌.考虑日照的碾压混凝土重力坝施工期温度仿真[J].武汉大学学报(工学版),2006,39(1):26-29. |
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| 作者姓名： | 常晓林 刘杏红 魏斌 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072
2. 中国市政工程中南设计研究院,湖北,武汉,430010 |
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| 摘 要： | 目前在仿真计算施工过程中的温度场时,气温边界条件均没有考虑日照影响引起的混凝土表面温度升高.采用瞬态有限元方法严格模拟碾压混凝土实际碾压浇筑过程,就施工期考虑日照影响与不考虑日照影响两种情况进行温度仿真计算,并且将仿真计算结果与实测温度值进行了比较.结果表明,考虑日照后的仿真温度场接近实测的温度场,并且得出了施工期日照对混凝土温度场影响很大的结论,如不考虑日照影响,计算得到的温度场将低于实际大坝的温度场.
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| 关 键 词： | 碾压混凝土 重力坝 温度仿真 日照影响 有限元方法 |
| 文章编号： | 1671-8844（2006）01-026-04 |
| 收稿时间： | 2004-12-14 |
| 修稿时间： | 2004年12月14 |
Temperature simulation of RCC gravity dam during construction considering solar radiation |
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| CHANG Xiaolin,LIU Xinghong,WEI Bin.Temperature simulation of RCC gravity dam during construction considering solar radiation[J].Engineering Journal of Wuhan University,2006,39(1):26-29. |
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| Authors: | CHANG Xiaolin LIU Xinghong WEI Bin |
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| Affiliation: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Central South Municipal Engineering Design Institute, Wuhan 430010, China |
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| Abstract: | At present,the coocrete surface temperature increase caused by solar radiation has not been considered in determining the air temperature boundary condition of the temperature field in the concrete dams construction simulation.In this paper,the transient analysis type of FEM is applied to simulate layer-by-layer construction process to compute the temperature that solar radiation is taken in account or not.By comparing the real values and computing results,it shows the results considering the influence of solar radiation on temperature approach the real values;so this influence is very remarkable.If the influence of solar radiation is ignored,the temperature field results will lower the real values. |
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| Keywords: | roller-compacted concrete(RCC) gravity dam temperature simulation solar radiation FEM |
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