基于热学参数反演分析的常态大坝混凝土温度场仿真

摘要

为获得精度较高的常态大坝混凝土温度场仿真计算结果, 需要较为准确的可用于温度场仿真计算的混凝土热学参数.结合某常态重力坝工程和现场原位温度场试验结果, 对混凝土热学计算参数进行反演分析, 并运用所得的反演分析成果对该重力坝温度场进行仿真模拟.结果表明:通过反演参数仿真模拟所得的大坝温度计算值与其相应测点的实测值吻合, 反演结果可靠, 可有效提高常态大坝混凝土温度场仿真模拟精度, 为指导大坝混凝土现场施工提供参考.%In order to obtain the high-precision simulation results of the temperature field of normal dam concrete, it is necessary to use more accurate thermal parameters.Based on the experimental results of a normal gravity dam and an in-situ temperature field test, the thermal parameters of concrete are calculated by the inversion method.The analysis results of the inversion method are used to simulate the temperature filed.The results show that the calculated values obtained from the inversion parameter simulation are in good agreement with the measured values and the inversion results are reliable, which can improve the simulation precision of the temperature field effectively and provide a reference for guiding the in-situconstruction of dam concrete.