信阳师范大学学报（自然科学版）2026，Vol.39Issue(2)：250-256,7.DOI:10.3969/j.issn.2097-583X.2026.02.011
基于三维比例边界有限元的高拱坝地震响应模拟
Seismic response simulation of high arch dams based on 3D scaled boundary finite element method
摘要
Abstract
Aiming at the problems of strong mesh dependency and difficulty in simulating transverse joint contact in the seismic analysis of high arch dams using the traditional finite element method,the scaled boundary finite element method(SBFEM)was introduced,and a nonlinear seismic response analysis model for the high arch dam-foundation system was constructed.By combining octree meshing technology and the Lagrange multiplier method,accurate simulation of the contact effects at the dam's transverse joints was achieved by the model.Taking a 300-meter-class high arch dam as an example,the computational results of SBFEM and ABAQUS software were compared and analyzed,and the effectiveness of the model was verified.In addition,the influence of the transverse joint opening effect on the dam's displacement and stress distribution was studied.The results indicated that the dynamic characteristics of high arch dams could be effectively simulated by SBFEM;The stress state of the dam was significantly altered by the presence of transverse joints,causing part of the arch-direction load to be transferred to the cantilever direction.关键词
比例边界有限元法(SBFEM)/高拱坝/地震响应/横缝/八叉树网格/拉格朗日乘子Key words
scaled boundary finite element method(SBFEM)/high arch dam/seismic response/transverse joint/Octree mesh/Lagrange multiplier分类
数理科学引用本文复制引用
章鹏,俞泽皓,鲁建峰..基于三维比例边界有限元的高拱坝地震响应模拟[J].信阳师范大学学报（自然科学版）,2026,39(2):250-256,7.基金项目
国家自然科学基金项目(12202179) （12202179）
南京工程学院大学生创新训练项目(202511276040) （202511276040）
