乔开放

摘  要：该文对某基坑工程本身及周边建筑进行了坡顶水平和竖向位移、地下水位、深层水平位移（测斜）及对周边建、构筑物竖向位移进行了全面的动态监测，分析基坑的变形规律以及周边建筑物在基坑施工期间的变形规律，分析结果显示：在基坑土方开挖、降水施工阶段，基坑支护变形明显较大，通常基坑长边方向中间部位的变形情况比较大，因周边建筑物及构筑物采用了深基础和合理的基坑支护措施，其变形位移受到基坑的影响较小，基坑支护总体变形在规范允许范围内，各项监测指标符合一般基坑工程变形規律。所得结论可为相关研究提供参考。

关键词：基坑施工  监测  周边建筑物  深基础

中图分类号：TU753  文献标识码：A   文章编号：1672-3791（2021）10（b）-0000-00

Monitoring and Analysis of a Foundation Pit Support Project and Surrounding Buildings

QIAO Kaifang

（Jianyan Test Group Co.， Ltd.， Xiamen， Fujian Province， 361000 China）

Abstract： In this paper， the horizontal and vertical displacement of the slope top， the groundwater level， the deep horizontal displacement （inclinometer） and the vertical displacement of the surrounding buildings and structures of a foundation pit project itself and its surrounding buildings are monitored comprehensively and dynamically， and the deformation law of the foundation pit and the surrounding buildings during the construction of the foundation pit is analyzed. The deformation of foundation pit support is obviously large， usually the deformation of the middle part of the long side of the foundation pit is relatively large， because the surrounding buildings and structures adopt deep foundation and reasonable foundation pit support measures， their deformation and displacement are less affected by the foundation pit， the overall deformation of foundation pit support is within the allowable range of the specification， and the monitoring indicators are in line with the general deformation law of Foundation Pit Engineering. The conclusions can provide a reference for related research.

Key Words：Foundation pit; Construction monitoring; Surrounding buildings; Deep foundation

基坑监测属于一种信息化施工手段，即在开挖基坑和地下工程施工过程中监测基坑的变形情况以及周围环境的变化情况，然后分析监测结果并反馈给施工，起到指导设计和施工的作用[1-2]。基坑监测也是保证施工安全和进度的有效措施，该文通过对某基坑工程本身及周边建筑的全面监测，分析基坑施工期间的变形规律，指出基坑施工过程需重点关注的部位，供类似工地施工参考。

1工程介绍

某工程建设房屋为地下1层，地上5栋26～31层框剪结构建筑群，占地面积约19 845.2 m2，总建筑面积83 245.2 m2，基坑开挖深度4.20～5.10 m，基坑总周长约580 m，基坑平面为多边形，其中最长直边约165.00 m，基坑邻近学校位置采用拉森钢板桩支护，支护深度约12.0 m。……