基于多目标优化的WOA-BPNN高拱坝变形模量反演分析  

Inversion Analysis of High Arch Dam Mechanical Parameters Based on Multi-objective Optimization Strategy and WOA-BPNN

作　　者：刘欣航 娄一青 郑东健[1] LIU Xin-hang;LOU Yi-qing;ZHENG Dong-jian(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Wenzhou Water Conservancy and Electric Power Survey and Design Assembly Company Ltd.,Wenzhou 325002,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]温州市水利电力勘测设计院有限公司,浙江温州325002

出　　处：《水电能源科学》2023年第10期96-99,共4页Water Resources and Power

基　　金：国家自然科学基金项目(52179128)。

摘　　要：随着大坝服役年限的增加,根据原型观测资料对坝体和坝基的力学参数进行反演十分必要,目前大坝反分析模型仍以坝体实测位移场监控模型为主,其只能反映宏观上坝体和坝基的位移变化规律,而忽视了细观上大坝应变场和应力场的变化规律。因此,通过同时考虑大坝位移监测数据及大坝应变监测数据,提出了一种基于MOEA/D和WOA-BPNN的高拱坝力学参数反演模型,并采用某拱坝坝体位移测点及应变测点,对拱坝坝体混凝土及基础岩体的力学参数进行了反演分析。结果表明,最终反演结果更加准确、合理。With the increase of the service life of the dam,inversion analysis of dam mechanical parameters based on the prototype monitoring data is necessary.At present,the dam inversion analysis model is still mainly based on the dam displacement monitoring data,which can only reflect the dam displacement law at the macroscopic level,while the change law of the strain field and stress field of the dam is ignored from the mesoscopic perspective.Therefore,a high arch dam mechanical parameter inversion model based on WOA-BPNN and MOEA/D was proposed,which consider both the dam displacement monitoring data and the dam strain monitoring data.The mechanical parameter inversion analysis of the arch dam was carried by the dam's displacement data and strain data.The results show that the inversion parameter is more accurate and reasonable.

关 键 词：高拱坝 参数反演 机器学习 多目标优化 有限元 

分 类 号：TV311[水利工程—水工结构工程]