东南大学学报（自然科学版）2026，Vol.56Issue(7)：991-998,8.DOI:10.3969/j.issn.1001-0505.2026.07.006
振杆密实处理可液化地基的加固机理与效果研究
Improvement mechanism and in-situ effect of liquefiable ground improved by vibratory rod compaction method
摘要
Abstract
The vibratory rod compaction method is an emerging technique for improving liquefiable ground.A numerical model of a ground improved by the vibratory rod compaction method was developed using the coupled arbitrary Lagrangian-Eulerian technique with Abaqus.The variations of surface vibration velocity,soil stress,and plastic strain evolution during the process of the vibrating rod penetrating into the ground were analyzed.Therefore,the mechanism of the method was revealed.Through on-site testing of the ground im-provement of the Dongtai-Xinghua Expressway extension project,the improvement effect was analyzed.The results indicate that,during vibratory rod penetration,the surface vibration velocity decreases and tends to a certain value gradually with the increasing of penetration depth.Both vertical and horizontal soil stresses of surrounding soils increase during the vibratory rod penetration process,and the increasing of horizontal stress and the influence zone is more significant than that of vertical stresses.The equivalent plastic strain decreases with distance increasing from the vibratory rod and it becomes negligible beyond 2 m from the center of vibra-tion point,indicating an effective improvement radius range from 1.0 m to 1.5 m.Field standard penetration tests and cone penetration tests confirm that the vibratory rod compaction method effectively eliminates lique-faction of ground.关键词
地基处理/振杆密实/数值模拟/任意拉格朗日-欧拉法/液化Key words
ground improvement/vibratory rod compaction method/numerical simulation/arbitrary Lagrangian-Eulerian method/liquefaction分类
建筑与水利引用本文复制引用
章定文,张俊,王宇,徐昊天,杜广印..振杆密实处理可液化地基的加固机理与效果研究[J].东南大学学报（自然科学版）,2026,56(7):991-998,8.基金项目
国家自然科学基金资助项目(52078129) （52078129）
宿迁市交通运输科技与成果转化资助项目(2022Y13). （2022Y13）
