均质黄土坝变形计算参数全局敏感性分析  

Global Sensitivity Analysis of Deformation Calculation Parameters of a Homogeneous Loess Dam

作　　者：孙一清 黄天 王桂智 薛宇阳 徐力群[1] 方卫华[4] 冯亚新 黄章鑫 金洪杰 崔卫东 SUN Yiqing;HUANG Tian;WANG Guizhi;XUE Yuyang;XU Liqun;FANG Weihua;FENG Yaxin;HUANG Zhangxin;JIN Hongjie;CUI Weidong(College of Water Conservancy&Hydropower Engineering,Hohai Univ.,Nanjing 210098,China;Jiangsu Provincial Water Conservancy Survey&Design Institute Co.,Ltd.,Yangzhou 225127,China;Division of Dike&Sluice Administration Shanghai,Shanghai 200080,China;Nanjing Automation Institute of Water Conservancy and Hydrology,Nanjing 210008,China;Land Preparation Center,Natural Resources&Planning Bureau,Dongtai City,Jiangsu Province,Dongtai 224200,China)

机构地区：[1]河海大学水利水电学院,南京210098 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225127 [3]上海市堤防泵闸建设运行中心,上海200080 [4]水利部南京水利水文自动化研究所,南京210008 [5]江苏省东台市自然资源和规划局土地整理中心,江苏东台224200

出　　处：《三峡大学学报（自然科学版）》2022年第4期16-23,共8页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金雅砻江联合基金(U1765205);江苏省水利科技项目(2020024);国家自然科学基金面上项目(52179130);土石堤坝内部隐患及渗漏通道快速探测关键技术与装备研究(2019YFC1510802);国家自然科学基金青年项目(51609073);江苏省自然科学基金面上项目(BK20201312);江苏高校优势学科建设工程资助项目(水利工程)(YS11001)。

摘　　要：邓肯-张E-B模型因其每个参数都有清晰的物理和几何意义,被广泛运用在大坝变形计算中.为探究邓肯-张E-B模型参数之间的交互作用,本文基于Plackett-Burman试验设计和正交试验设计方法,以某均质黄土坝为研究对象,对土坝邓肯-张E-B模型进行全局敏感性分析.通过Plackett-Burman试验设计对邓肯-张E-B模型中参数进行显著性筛选,筛选出高度显著的参数,再对高度显著参数进行考虑交互作用的正交试验设计,得到考虑交互作用的邓肯-张E-B模型参数敏感性排序.结果表明,R_(f)、K_(b)、φ_(0)和K是对土坝变形敏感性最强的4个参数,而n、Δφ和m 3个参数对于土坝变形的影响较小.R_(f)和φ_(0)、R_(f)和K_(b)以及φ_(0)和K_(b)的交互作用对于均质黄土坝变形的敏感性是不可忽视的,甚至其交互作用的敏感性大于单个参数的敏感性.The Duncan-Chang E-B model is widely used in dam deformation calculations because its parameters have clear physical and geometric meanings.In order to investigate the interaction between the parameters of the Duncan-Chang E-B model,the global sensitivity analysis of Duncan-Chang E-B model was conducted for a homogeneous loess dam based on the Plackett-Burman experimental design and the orthogonal test design methods in this paper.The parameters in the Duncan-Chang E-B model were screened for significance by the Plackett-Burman experimental design,and the highly significant parameters were then subjected to an orthogonal test design considering the interactions to obtain the sensitivity ranking of the Duncan-Chang E-B model parameters considering the interactions.The results show that R_(f),K_(b),φ_(0) and K are the four parameters with the strongest sensitivity to earth dam deformation,while n,Δφ,and m have less influence on earth dam deformation.The interaction of R_(f) and φ_(0),the interaction of R_(f) and K_(b),and the interaction of φ_(0 )and K_(b) have non-negligible sensitivity to earth dam deformation,and the sensitivity of their interactions is even greater than that of individual parameters.

关 键 词：均质黄土坝 有限元分析 邓肯-张模型 全局敏感性分析 Plackett-Burman试验 正交试验 

分 类 号：TV641.2[水利工程—水利水电工程]