CAJ | 학술논문

针对室内试验所得混凝土大坝热学参数的随机性以及传统反分析优化算法易陷入早熟,效率低和计算量巨大等缺点,提出基于并行粒子群算法的反分析方法.本文利用实际所测温度对热学参数进行反分析,根据反分析后的热学参数利用有限元进行温度场正分析,分析比较预测参数与试验参数所得非稳定温度场.结果表明:计算结果和实测结果较为接近,该方法具有较好的稳定性和收敛性,反演结果可满足工程要求.该方法可为混凝土坝热学参数反分析提供理论探讨意义并具有工程实际应用价值.
침대실내시험소득혼응토대패열학삼수적수궤성이급전통반분석우화산법역함입조숙,효솔저화계산량거대등결점,제출기우병행입자군산법적반분석방법.본문이용실제소측온도대열학삼수진행반분석,근거반분석후적열학삼수이용유한원진행온도장정분석,분석비교예측삼수여시험삼수소득비은정온도장.결과표명:계산결과화실측결과교위접근,해방법구유교호적은정성화수렴성,반연결과가만족공정요구.해방법가위혼응토패열학삼수반분석제공이론탐토의의병구유공정실제응용개치.
Aimed at the unreliability of concrete thermal parameters of dam by laboratory testing and the shortcomings of traditional inverse analysis method of easy to fall into premature,low efficiency and great volume of calculation,the paper presented a new inverse analysis method based on parallel PSO.According to the actual measured temperature to predict the thermal parameters,the temperature field should be analyzed by the thermal parameters after inverse analysis,and comparatively analyzed the unstable temperature fields based on the forecast parameters and test parameters. The results showed that this method can be used to obtain thermal parameters of concrete dam and real engineering application value.