市政技术2026，Vol.44Issue(9)：58-65,8.DOI:10.19922/j.1009-7767.2026.09.058
深厚软土区拔桩致偏位桥梁桩基注浆纠偏方法研究
Research on Grouting Rectification Method for Deviated Bridge Pile Foundations by Pile-extraction in Deep Soft-soil Areas
摘要
Abstract
Aiming to rectify the deviation of adjacent bridge pile foundations induced by partial road-pile extraction during metro construction,an improved rectification method for bridge pile foundations in deep soft-soil areas is proposed combined with practical engineering cases.Firstly,based on a actual project where pile extraction caused deviation of adjacent viaduct pile foundations in deep soft-soil strata,finite-element numerical simulation is adopted to analyze the conventional rectification method combining pressure-relief holes and WSS grouting.Secondly,an improved method integrating pressure-relief holes,MJS piles and WSS grouting is put forward,and the pile-founda-tion rectification performances of the two methods are compared and analyzed.Finally,parametric analysis is carried out to investigate the influences of construction parameters in the improved method,including the layout width of MJS piles and the distance between grouting holes and the to-be-rectified piles,on rectification effectiveness.The results show that under the same grouting volume,the improved method achieves larger rectification displacement for deviated piles compared with the conventional method.Appropriately increasing the layout width of MJS piles and reducing the distance between grouting holes and the to-be-rectified piles can significantly enhance the rectification displacement and reduce the bending moment of pile shafts.The proposed improved method can markedly improve rectification efficiency,and the research outcomes can provide reference for the engineering construction of bridge pile foundation deviation caused by similar pile pulling in soft soil areas.关键词
深厚软土区/桥梁桩基偏位/桩基纠偏/数值模拟/WSS注浆/参数分析Key words
deep soft-soil area/bridge pile foundation deviation/pile foundation rectification/numerical simulation/WSS grouting/parametric analysis分类
交通工程引用本文复制引用
杨执印..深厚软土区拔桩致偏位桥梁桩基注浆纠偏方法研究[J].市政技术,2026,44(9):58-65,8.基金项目
国家自然科学基金重点项目(52090082) （52090082）
