水力发电学报2025，Vol.44Issue(4)：72-84,13.DOI:10.11660/slfdxb.20250408
耦合SBFEM-FEM的高拱坝系统地震响应分析
Seismic response analysis of high arch dam system with coupled SBFEM-FEM
摘要
Abstract
For a high arch dam,the traditional finite element method exhibits certain limitations in fine modeling,because of its large dam span and other huge dimensions,diversified material properties in different zones of its body,and the complexity of its foundation topography.This paper describes a brand-new integrated analysis process of a high arch dam-foundation-reservoir system,and develops a seismic analysis numerical model by the coupled SBFEM-FEM.This model is based on the scaled boundary finite element method(SBFEM),and uses the overlaying element technique to integrate an octree SBFEM and the ABAQUS built-in elements.It combines the advantages of SBFEM semi-analyticity and mesh flexibility with the mature linear and nonlinear solvers and pre-and post-processing modules of ABAQUS.It is applied in a case study of the elastic,contact nonlinear and material nonlinear dynamic response of the XL high arch dam under seismic action.The results show that compared with the traditional finite element method,our new method reduces the model-required calculation resources effectively,and has a high accuracy in simulating the nonlinear response and damage of the dam under earthquakes,thus useful for the seismic analysis of water dams and similar structures.关键词
比例边界有限元/耦合SBFEM-FEM/接触非线性/非线性动力响应/八叉树网格Key words
scaled boundary finite element method(SBFEM)/coupled SBFEM-FEM/contact nonlinear/nonlinear dynamic response/octree mesh分类
水利科学引用本文复制引用
陈灯红,梁羽翔,刘云辉,张心瀚,胡昊文..耦合SBFEM-FEM的高拱坝系统地震响应分析[J].水力发电学报,2025,44(4):72-84,13.基金项目
国家自然科学基金项目(52079072) （52079072）
土木工程防灾减灾湖北省引智创新示范基地(2021EJD026) （2021EJD026）
