基于仿真分析的混凝土坝热学参数反演方法

Inverse Analysis of Thermal Parameters of Concrete Dam Based on Simulation Analysis

根据景洪电站右冲坝段施工现场温度实测资料,以温度场仿真计算为基础,建立了温度场反演计算模型,采用复合形法反演实际浇筑的碾压混凝土材料热学参数,提出了选择实测温度监测点的参与反演分析的依据,并分析了反演结果的合理性。研究结果验证了该方法可行有效,并可为大坝后期施工提供参考。

Based on the simulated calculation of the temperature field, the inverse analysis method of temperature field is set up. The complex law is used to obtain such thermal parameters as the raising temperature under thermal isolation, the raising velocity of heat, the coefficient of conducting temperature and the coefficient of surface thermal diffusion. An engineering application of this method is presented by solving thermal parameters of the concrete of an RCC gravity dam in Southwestern China. It is documented which measured point may be chosen in the inverse analysis. In comparison with the measured data, the outcome is credible. Results show that this method is effective and feasible.