| 龙滩碾压混凝土坝温度场仿真计算 |
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| 引用本文： | 张子明,姜冬菊,宋培玉,王嘉杭. 龙滩碾压混凝土坝温度场仿真计算[J]. 红水河, 2001, 20(3): 18-21 |
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| 作者姓名： | 张子明 姜冬菊 宋培玉 王嘉杭 |
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| 作者单位： | 1. 河海大学
2. 煤炭部南京设计研究院 |
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| 基金项目： | “九五”国家重点科技攻关项目(96 -2 2 0 -0 1-0 1-0 2 ( 2 ) ) |
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| 摘 要： | 采用有限元法与有差分法相结合，在空间域用有限元离散，在时间域用差分法离散，编制了计算碾压混凝土坝温度场的计算程序，并对龙滩碾压混凝土坝进行了50年的仿真计算。得出如下结论：①由于碾压混凝土坝采用薄层浇筑方式，使得坝体内最高温度场受外界气温影响较大，随着外界气温的升降而升降。②碾压混凝土坝前期温度梯度高，降温速度慢，最终降至稳定温度场需要几十年时间。
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| 关 键 词： | 有限元 差分法 碾压混凝土坝 仿真 温度场 龙滩水电站 |
| 文章编号： | 1001-408(2001)03-0018-04 |
| 修稿时间： | 2001-05-14 |
The Simulation Computation of Temperature Field of Longt an RCC Dam |
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| ZHANG Zi ming ,JIANG DONG ju ,SONG Pei yu ,WANG Jia hang. The Simulation Computation of Temperature Field of Longt an RCC Dam[J]. Hongshui River, 2001, 20(3): 18-21 |
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| Authors: | ZHANG Zi ming JIANG DONG ju SONG Pei yu WANG Jia hang |
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| Affiliation: | ZHANG Zi ming 1,JIANG DONG ju 1,SONG Pei yu 2,WANG Jia hang 1 |
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| Abstract: | With the combination of finite elements and finite difference methods,i.e. space dispersion by finite element method and time dispersion by difference method,a simulation computation program is made to compute the temperature field in concerete dam and a 50 year simulation computation for Longtan RCC dam has been carried out.The conclusion is:(1)Thin layers of RCC placement are apt to be affected by surrounding temperature,and the max. temperature field rises and drops according to the ambient temperature.(2) The RCC dam has a higher temperature gradient in the initial stage and its temperature drop speed is quick in the initial stage,slow in the latter stage.The final stable temperature field will be reached in tens of years. |
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| Keywords: | FEM difference method RCCD simulation temperature field Longtan hydroelectric project |
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