| 石门子碾压混凝土拱坝温度场实测与仿真计算 |
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| 引用本文： | 刘光廷,胡昱,王恩志,陈凤歧,高虎. 石门子碾压混凝土拱坝温度场实测与仿真计算[J]. 清华大学学报(自然科学版), 2002, 42(4): 539-542 |
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| 作者姓名： | 刘光廷 胡昱 王恩志 陈凤歧 高虎 |
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| 作者单位： | 清华大学水利水电工程系,北京,100084 |
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| 基金项目： | 清华大学“九八五”科研基金项目 |
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| 摘 要： | 碾压混凝土坝的非稳定温度场是进行仿真应力计算和设计的基础。根据理论分析和数值计算 ,分析各热学参数和非热学参数对非稳定温度场的影响。通过对石门子工程(在建 )进行工程实际监测 ,取得了一些高程测点实测温度变化过程 ,并与仿真计算结果相比较。为模拟混凝土中粉煤灰后期放热 ,提出双 e曲线模型 ,使仿真计算结果更符合实际。按所提出的方法进行非稳定温度场的计算预测 ,从而对大坝后期浇筑作指导 ,具有较好的工程应用价值。
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| 关 键 词： | 碾压混凝土坝 非稳定温度场 工程实测 热学参数 |
| 文章编号： | 1000-0054(2002)04-0539-04 |
| 修稿时间： | 2001-03-01 |
Analysis and measurement of the temperature field in the Shimenzi RCC arch dam |
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| LIU Guangting,HU Yu,WANG Enzhi,CHEN Fenqi,GAO Hu. Analysis and measurement of the temperature field in the Shimenzi RCC arch dam[J]. Journal of Tsinghua University(Science and Technology), 2002, 42(4): 539-542 |
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| Authors: | LIU Guangting HU Yu WANG Enzhi CHEN Fenqi GAO Hu |
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| Abstract: | The unsteady temperature field in a roller compacted concrete (RCC) arch dam is the foundation of the stress analysis in engineering design. The effects of various thermal and non thermal parameters on the unsteady temperature field were compared numerically. The temperature variations at some locations measured on site during construction of the Shimenzi dam were compared with the numerical results to investigate the heat induced by the coal ash in the concrete. Simulation results using a double exponential law model have better agreement with the measured data. Analysis of the unsteady temperature field can be used in practice to improve the design of roller compacted concrete dams. |
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| Keywords: | roller compacted concrete (RCC) dam unstable temperature field thermal parameters |
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