快速静态GPS基坑水平位移安全性监测技术.pdf

施工技术 2014年8月下 56 CONSTRUCTION TECHNOLOGY 第43卷第16期 D0I:10.7672/5js2014160056 快速静态GPS基坑水平位移安全性监测技术 胡龙伟1，张英杰，张洪源2，田砾3 (1.青岛理工大学管理学院，山东青岛266033；2.青岛理工大学特种工程公司，山东青岛266033； 3.青岛理工大学土木工程学院，山东青岛266033) [摘要]现有的基坑水平位移监测主要采用全站仪或经纬仪利用极坐标法或小角度法进行，但工作基准点常会受 到基坑开挖的影响，进而影响基坑检测的精度和时效性.快速静态GP基坑水平位移监测技术，只需建立2个基 准点作为基准站，工作基点和部分不能通视的监测点利用GPS进行测量，实施动态监测.青岛某基坑工程水平位 移的监测，采用双基准菱状GP网型，基站点和监测点采用强制对中螺栓和特质仪器支架来快速安置，基站长时段 观测与监测点快速静态观测数据采集相结合.结果表明.该方法具有高精度、高效益、全天候、不需通视等优点，可 提高工作效率并获得稳定和可靠监测数据. [关键词]基坑：位移；监测；快速静态GPS法 [中图分类号]TU753.1 [文献标识码]A [文章编号]1002-8498(2014)16-0056-03 Security Monitoring Technology of Foundation Excavation Horizontal Displacement by Rapid Static GPS Method Hu Longwei' Zhang Yingjie' Zhang Hongyuan2 Tian Li (1.School of Management Qingdao Technological Unirersity Qingdao Shandong 266033 China; 2.Special Engineering Company of Qingdao Technological University Qingdao Shandong 266033 China; 3.School of Civil Engineering Qingdao Technological University Qingdao Shandong 266033 China) Abstract:The total station or theodolite is mainly adopted in foundation excavation horizontal displacement monitoring with polar coordinate method or small angle method.However the basis points are often affected by excavation work which influence the detection accuracy and timeliness of the security monitoring of foundation excavation.All that needed are only two base stations in rapid static GPS method adopted in foundation excavation horizontal displacement security monitoring.The work basis points and some...