天津建设科技2025，Vol.35Issue(5)：24-29,6.DOI:10.3969/j.issn.1008-3197.2025.05.006
增补管桩加固的既有桩基抗震韧性提升机理研究
Research on the Mechanism of Improvement of Seismic Resilience of Pile Foundations Based on Supplementary Pipe Pile Reinforcement
石海洋 1王甫友 1张一民1
作者信息
- 1. 天津市交通科学研究院,天津 300300
- 折叠
摘要
Abstract
In order to improve the seismic resilience of existing bridge pile foundations,this paper proposes a reinforce-ment scheme based on supplementary pipe piles,the mechanism and influencing factors of the improvement of seismic resilience of existing pile foundations is studied by finite element numerical methods.The following conclusions were drawn by conducting sensitivity analysis on parameters such as pile length,pile diameter,and pile spacing.Adopting additional seismic reinforcement measures for pile foundations,the horizontal re-sistance of the reinforced pile can be significantly improved,and the internal force response of the pile founda-tion under dynamic loads can be reduced.However,the reinforcement effect gradually weakens as the rein-forcement strength increases.The effect of reducing the deformation and internal force response of the existing pile foundation is more significant by increasing the diameter specifications and spacing of the pipe piles.关键词
桥梁基础/增补管桩/桩基加固/抗震性能/韧性提升Key words
bridge fundation/supplement pipe piles/pile foundation reinforcement/seismic performance/resilience enhancement分类
交通运输引用本文复制引用
石海洋,王甫友,张一民..增补管桩加固的既有桩基抗震韧性提升机理研究[J].天津建设科技,2025,35(5):24-29,6.
