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本文应用非线性数学规划理论,研究解决混凝土坝温度控制的最优化设计问题;根据弹性理论和热传导理论,分析基岩温度变化对混凝土浇筑块应力的影响;利用热传导理论和弹性徐变理论,编制了一套计算稳定温度场、不稳定温度场和温度徐变应力的二维和三维有限元程序;在大量实际水库水温观测资料整理分析的基础上,通过传热学分析,提出了一个简便的具有足够精度的确定水库水温的计算方法。利用上述研究成果,分析研究了龙羊峡、安康、东江、大化等若干实际工程问题。
In this paper, the nonlinear mathematical programming theory is applied to solve the optimal design of concrete dam temperature control. Based on the elastic theory and heat conduction theory, the influence of bedrock temperature on the stress of concrete pouring block is analyzed. Using heat conduction theory and elastic creep theory, A set of two-dimensional and three-dimensional finite element programs for calculating the steady temperature field, the unstable temperature field and the temperature creep stress are proposed. Based on the analysis and analysis of a large number of actual reservoir water temperature observation data, a simple and convenient Calculation method for determining reservoir water temperature with sufficient accuracy. Based on the above research results, some practical engineering problems such as Longyangxia, Ankang, Dongjiang and Dahua are analyzed and studied.