软土层深基坑变形监测与数值模拟研究  

Deformation Monitoring and Numerical Simulation of Deep Foundation Pit in Soft Soil Layer

作　　者：贾海鹏 侯刘锁 JIA Haipeng;HOU Liusuo(Shenzhen Geotechnical Investigation&Surveying Institute(Group)Co.,Ltd.,Shenzhen 518026,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]深圳市勘察测绘院(集团)有限公司,广东深圳518026 [2]天津大学建筑工程学院,天津300072

出　　处：《测绘与空间地理信息》2023年第8期6-8,12,共4页Geomatics & Spatial Information Technology

摘　　要：为有效掌握软土地质条件下的施工特点,避免地质灾害和经济损失发生,本文结合工程区域的地质条件,在软土地层实施加固处理后,选择地表建筑和关键位置,统计其水平和高程方向的变形量。应用FLAC3D软件对深基坑周围地表沉降和防护结构变形规律进行了模拟分析。实验结果表明:本文数值模拟获取的变形规律符合理论特征,模拟结果与实地监测结果基本保持一致,符合限差要求,可为深基坑施工提供可靠的预警保障。In order to effectively grasp the construction characteristics under soft soil geological conditions and avoid geological disasters and economic losses.Combined with the geological conditions of the project area,after the reinforcement treatment of the soft soil layer,this paper selects the surface buildings and key positions,and records the deformation in the horizontal and vertical directions.The surface settlement around deep foundation pit and the deformation law of protective structure are simulated and analyzed by using FLAC3D software.The experimental results show that the deformation law obtained by numerical simulation in this paper conforms to the theoretical characteristics,the simulation results are basically consistent with the field monitoring results,which meet the tolerance requirements,and can provide a reliable early warning guarantee for the construction of deep foundation pit.

关 键 词：软土 深基坑 变形监测 数据模拟 精度分析 

分 类 号：P25[天文地球—测绘科学与技术] TB22[天文地球—大地测量学与测量工程]