河北工业科技2025，Vol.42Issue(4)：357-364,8.DOI:10.7535/hbgykj.2025yx04007
MJS工法加固既有车站对周边管线的沉降影响
Influence of MJS reinforcement of existing station on settlement of surrounding pipelines
摘要
Abstract
To prevent excessive deformation of both the structure itself and the surrounding environment caused by construction,taking the Waitan Bridge Station of Ningbo Metro Line 7 as an example,the comprehensive high metro jet system(MJS)was employed to reinforce the soil on the west side of the existing Line 2 station.Monitoring points were established at critical locations along pipelines to collect deformation data,thereby facilitating an exploration of deformation patterns and evolution laws under reinforcement conditions based on measured data.The results indicate that the MJS method effectively controls settlement deformation in peripheral pipelines.Overall,pipeline settlement increases with the progress of construction,with the maximum settlement and uplift observed at rainwater and sewage pipelines.During the foundation pit excavation,the maximum recorded settlement of the peripheral pipelines reaches 12.02 mm,while maximum uplift is noted at 7.34 mm.After reinforcement,pipeline settlement on the east side of the foundation pit measures 9.68 mm,which is less than deformations experienced in other directions of the unreinforced foundation pit,and well below the monitoring control threshold of±30 mm.The application of MJS for precise lateral soil reinforcement adjacent to existing stations markedly enhances the safety during foundation pit excavations in complex and sensitive environments.This approach provides valuable technical reference and practical examples for deep foundation pit projects of adjacent important buildings.关键词
地基基础工程/软土地层/MJS工法/紧邻既有车站/周边管线/沉降控制Key words
foundation engineering/soft soil layer/MJS construction method/adjacent to existing stations/peripheral pipe-line/settlement control分类
建筑与水利引用本文复制引用
步乐乐,赖亮,邱裕华,柳杨帆,齐丹,申文明,黄添之,刘维..MJS工法加固既有车站对周边管线的沉降影响[J].河北工业科技,2025,42(4):357-364,8.基金项目
教育部重点实验室开放基金(2017P05) （2017P05）
