基于实测沉降过程的某混凝土面板堆石坝E-B模型参数反演分析  

Parameter inversion of E-B model of concrete face rockfill dam based on actual measurement of settlement

作　　者：刘成栋[1] 张凯[1] 向衍[1] 方致远 LIU Chengdong;ZHANG Kai;XIANG Yan;FANG Zhiyuan(Nanjing Hydraulic Research Instiute,State Key Laboratory of Hydrology-Water Resource and Hydraulic Engineering,Nanjing 210029,China;College of Water Conser vancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,南京210029 [2]河海大学水利水电学院,南京210098

出　　处：《南水北调与水利科技》2018年第S01期51-58,87,共9页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金(51779154,51679151);水利部公益性行业科研专项(20150133);国家重点研发计划(2016YFC0401605,2016YFC0401603);中央级公益性科研院所基本科研业务费专项资金重点项目(Y716011,Y716015,Y716019)。

摘　　要：混凝土面板堆石坝是一种主要靠经验设计建造的坝型,而准确选取参数是计算坝体应力变形的前提。参数的选取往往因试验的局限性和实际工程的复杂性而变得困难。利用某混凝土面板堆石坝工程实例所获取的坝体填筑及运行初期的全寿命周期位移监测资料,采用遗传算法,对坝体主次堆石区E-B模型参数进行了反演。反演结果对比分析可知,综合考虑大坝填筑期及运行初期变形观测资料进行反演所得的模型参数,能较为准确的反映坝体填筑料实际运行表现,对指导工程运行及监测资料分析具有重要意义。Concrete face rockfill dam is a dam type which is mainly based on experience design,w hile the accurate selection of parameters is the premise to calculate the stress and deformation of dam body.The selection of parameters is often difficult due to the limitations of the experiment and the complexity of the actual engineering.In this paper,genetic algorithm is adopted and the full life cycle displacement monitoring data of dam filling and initial operation of a concrete face rockfill dam is used to carry out the paramet ers of E-B model in the primary and secondary rockfill dam.Comparison analysis of inversion results,overall considering the model parameters of the deformation observation data during the construction period and operation preliminary stage of the dam,can more accurate reflect the actual operation circumstances of the dam construction material,has important significance to guide engineering operation and monitoring data analysis.

关 键 词：混凝土面板堆石坝 实测沉降 E-B模型参数 反演 

分 类 号：TV641[水利工程—水利水电工程]