富水软土地层地铁施工对既有建筑影响分析  

ANALYSIS OF THE IMPACT OF SUBWAY CONSTRUCTION ON EXISTING BUILDINGS IN RICH WATER SOFT SOIL LAYER

作　　者：毛鹏 MAO Peng(China Railway 18th Bureau Group Municipal Engineering Co.,Ltd.,300000,Tianjin,China)

机构地区：[1]中铁十八局集团市政工程有限公司,天津300000

出　　处：《建筑技术》2025年第6期667-670,共4页Architecture Technology

摘　　要：以富水软土地层地铁侧穿既有建筑物为研究对象,通过总结盾构施工过程中风险防控技术,对该地层条件下隧道穿越既有建筑物变形情况进行分析。结果表明:(1)构建了建筑物变形监测系统,导入了隧道线路布局及周边环境等信息,为地铁隧道施工穿越既有建筑物提供安全监测系统分析经验。(2)先行线隧道上部土层受到这一面盾构施工的影响最大,引起的沉降也就越大,后行线的施工对这一面的影响不大,因而引起的沉降也就越小。(3)其中S1~S6各建筑物监测点在隧道施工过程中最大值分别为:-6.55mm、-5.33mm、-5.79mm、-7mm、-6.14mm、-6.88mm。(4)随着施工的进行,建筑物各监测呈现出V形曲线。在隧道施工第10d到第30d时,各建筑物监测点在此时间段内横向偏移出现最大值。This paper focuses on the study of subway tunneling through existing buildings in water-rich soft soil layers.By summarizing the risk prevention and control techniques during shield tunneling construction,the deformation of the tunnel crossing existing buildings under this geological condition is analyzed.The results indicate that:(1)a building deformation monitoring system has been constructed,and information on tunnel route layout and surrounding environment has been imported,providing safety monitoring system analysis experience for subway tunnel construction passing through existing buildings.(2)The upper soil layer of the first line tunnel is most affected by the shield tunneling construction on this side,resulting in greater settlement.The construction of the second line has little impact on this side,so the settlement caused is also smaller.(3)The maximum values of S1~S6 building monitoring points during tunnel construction are-6.55mm,-5.33mm,-5.79mm,-7mm,-6.14mm,and-6.88mm,respectively.(4)As construction progresses,the monitoring of the building exhibits a V-shaped curve.During the 10th to 30th day of tunnel construction,the maximum lateral displacement of each building monitoring point occurred during this time period.

关 键 词：富水软土地层 盾构隧道 既有建筑物 变形监测 

分 类 号：TU74[建筑科学—建筑技术科学]