东南大学学报（自然科学版）2026，Vol.56Issue(9)：1239-1245,7.DOI:10.3969/j.issn.1001-0505.2026.09.001
地震作用下高土石坝-无限地基相互作用效应
Interaction effects between high rockfill dams and infinite foundations under earthquake
摘要
Abstract
The lack of understanding of the dynamic interaction mechanism between rockfill dams and founda-tions has led to the prevalent adoption of simplified vibration input methods in engineering practice,whereas the more rational wave input method has not yet been popularized.To quantify the dynamic interaction effects between structures and foundations,the free-field influence factor was proposed.By comparing the dynamic responses of rockfill dams,gravity dams,and high-rise buildings,the influence laws of structural stiffness and mass on dynamic interaction were clarified.The results indicate that both structural stiffness and mass exert significant impacts on the interaction effects,and the mass factor is more critical.At the same height,the mass of the rockfill dam is far greater than that of concrete dams and high-rise buildings;thus,the dynamic in-teraction between rockfill dams and foundations cannot be ignored.When the height of the rockfill dam ex-ceeds 100 m,the free-field acceleration influence factor is greater than 16.8%,and the error of dam crest ac-celeration calculated by the vibration input method exceeds 12.2%.It is recommended to use the seismic input method which can consider dam-foundation dynamic interaction in the seismic analysis of high rockfill dams.关键词
土石坝/大坝-地基动力相互作用/地震动输入方法/自由场影响因子Key words
rockfill dam/dam-foundation dynamic interaction/seismic input method/free-field influence factor分类
建筑与水利引用本文复制引用
邹德高,屈永倩,赵一玮,李文亮,唐川..地震作用下高土石坝-无限地基相互作用效应[J].东南大学学报（自然科学版）,2026,56(9):1239-1245,7.基金项目
华能澜沧江公司科技资助项目(LCJKJ2025-13) （LCJKJ2025-13）
云南省科技人才与平台计划资助项目(202405AK340002) （202405AK340002）
大连理工大学基本科研业务费资助项目(DUTZD25101). （DUTZD25101）
