多策略改进的NGO算法在大坝参数反演中的应用  

Application of Multi-strategy Improved NGO Algorithm for Dam Parameter Inversion

作　　者：曹文翰 马琳[2] 郝小鸟 CAO Wenhan;MA Lin;HAO Xiaoniao(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210024,Jiangsu,China;Yangling Vocational&Technical College,Xianyang 712100,Shaanxi,China;Xinchang County Water Resources and Hydropower Bureau,Shaoxing 312500,Zhejiang,China)

机构地区：[1]河海大学水利水电学院,江苏南京210024 [2]杨凌职业技术学院,陕西咸阳712100 [3]新昌县水利水电局,浙江绍兴312500

出　　处：《水力发电》2024年第5期101-109,共9页Water Power

基　　金：国家自然科学基金资助项目(52239009);中央高校基本业务费(2019B69814)。

摘　　要：为解决混凝土坝参数优化反演存在的问题,包括寻优性能不佳、精度不足和效率低下等,提出了一种基于多策略改进北方苍鹰算法(MSNGO)的混凝土坝参数优化反演策略。首先,采取多个策略改进北方苍鹰算法,以提高原始算法的寻优能力。接着,结合有限元正分析,构建计算与实测值之间合适的目标函数,利用MSNGO构建智能优化反演模型,并通过并行策略提高反演效率,搜索得到参数反演最优值。通过两个算例对该方法进行验证,并与基准优化算法比较计算结果。结果表明,MSNGO反演策略比其他优化算法收敛速度快、且能跳出局部极值使反演参数结果更为准确,测点计算值与实测值有良好的吻合度,表明该智能优化方法可在混凝土坝参数反演的实际问题中进行应用。In order to solve the problems of poor optimization seeking performance,insufficient accuracy and inefficiency in the inversion optimization of concrete dam parameters,a strategy for optimizing the inversion of concrete dam parameters based on the Multi-Strategy-based Improved Northern Goshawk Algorithm(MSNGO)is proposed.Firstly,multiple strategies are adopted to improve the optimization seeking ability of NGO algorithm.Then,combined with the finite element positive analysis,a suitable objective function between calculated and measured values is constructed,and the MSNGO is used to construct an intelligent optimized inversion model.A parallel strategy is adopted to improve the efficiency of inversion,and the optimal values of the parameter inversion are searched for.The method is validated by two cases and compared with the inversion results of other intelligent optimization algorithms.The results show that the MSNGO inversion strategy converges faster than other optimization algorithms,and can jump out of the local extremes to make the inversion parameter results more accurate;the calculated displacement values of the measurement points are in good agreement with the monitoring values,which indicates that the intelligent optimization method has a good application in the inverse analysis of concrete dams.

关 键 词：多策略改进 北方苍鹰优化算法 位移统计模型 参数反演 弹性模量 混凝土坝 

分 类 号：TV642[水利工程—水利水电工程]