深基坑排桩支护监测分析与变形特征研究  

Monitoring analysis and deformation characteristics of pile row support in deep foundation pit

作　　者：管宏飞 江平 郑天涯 张红琼[1] 李红涛 陈鹏 GUAN Hongfei;JIANG Ping;ZHENG Tianya;ZHANG Hongqiong;LI Hongtao;CHEN Peng(No.125 Exploration Team,Hubei Bureau of Coal Geology,Yichang 443000,Hubei,China)

机构地区：[1]湖北煤炭地质一二五队,湖北宜昌443002

出　　处：《矿产勘查》2024年第S2期201-209,共9页Mineral Exploration

摘　　要：本文结合某深大基坑工程支护工程,将不同的工艺合理地用在同一个基坑工程中。通过对监测数据进行详细分析与研究,得以动态掌握基坑以及周边道路的变形状况,进而发现设计环节存在的不足之处,为施工发挥了重要的指导作用。。同时结合现场监测和数值模拟,分析在该支护形式下,基坑施工过程中的土体和支护结构力学及变形特征。结果表明:数值模拟计算结果与监测数据基本相符,基本变形趋势与实际情况大体一致。基坑工程是一种复杂的力学系统,受环境变化和岩土性质影响大,仅仅依靠理论很难精确计算基坑的稳定状态,依据监测数据作出超前预警,从而保障生命财产安全,为类似工程提供了参考和借鉴。In this paper,different technologies are reasonably used in the same foundation pit project in combination with the support project of a deep and large foundation pit project.The monitoring data was analyzed and studied in detail,the deformation of the foundation pit and surrounding roads was dynamically grasped,and the deficiencies in the design were discovered in time,which played an important role in guiding the construction.At the same time,by combining on-site monitoring and numerical simulation,the mechanical and deformation characteristics of soil and support structure during the construction of foundation pit under this support form are analyzed.The results indicate that the numerical simulation results are basically in line with the monitoring data,and the basic deformation trend is generally consistent with the actual situation.Foundation pit engineering is a complex mechanical system,which is greatly affected by environmental changes and geotechnical properties.It is difficult to accurately calculate the stable state of the foundation pit only by relying on theory,and advance warnings are made based on monitoring data to ensure the safety of life and property.References are provided.

关 键 词：基坑支护设计 基坑监测 数值模拟 

分 类 号：U231.3[交通运输工程—道路与铁道工程]