三峡大学学报（自然科学版）2025，Vol.47Issue(4)：23-30,8.DOI:10.13393/j.cnki.issn.1672-948X.2025.04.004
基于人工边界子结构的混凝土坝地震响应分析
Seismic Response Analysis of Concrete Dam Based on Artificial Boundary Substructure
摘要
Abstract
This article presents a seismic input method for artificial boundary substructure based on wave theory.By applying the free field displacement response to a substructure dynamic analysis model composed of elements with artificial boundary nodes,the equivalent seismic load of seismic input can be directly obtained.The seismic input method for artificial boundary substructures were verified by the pulse wave vertical incidence case.The numerical and analytical solutions are in good agreement,which indicates that the seismic input method has high accuracy.Using Nam Ngum5 gravity dam as a case study,a three-dimensional finite element model of the dam foundation was established.The artificial boundary substructure seismic input method and wave method were used for dynamic calculation,and the horizontal displacement and velocity time history curves of the dam body were extracted for comparative analysis.The results show that the curves calculated by both methods are in good agreement,validating the effectiveness of using the artificial boundary substructure method in practical engineering.关键词
人工边界子结构/地震动输入/混凝土坝/地震响应Key words
artificial boundary substructure/ground motion input/concrete dam/seismic response分类
水利科学引用本文复制引用
陈灯红,邸若冰,潘子悦..基于人工边界子结构的混凝土坝地震响应分析[J].三峡大学学报（自然科学版）,2025,47(4):23-30,8.基金项目
国家自然科学基金面上项目(52079072) （52079072）
湖北省引进外国人才和智力项目(2023DJC034) （2023DJC034）
