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介绍了基坑桩体深部水平位移的量测原理与技术,以某地铁车站基坑施工桩体水平位移为背景,在基坑四边建立了26个桩体深部水平位移的监控量测测站,运用TFL-CCX-D1移动式测斜仪进行了为期10个月现场监测,得出了桩体在基坑降水、开挖、架设支撑及主体结构施工过程中的水平位移变化规律。同时指出了桩体水平位移监测是基坑信息化施工的关键性指标,特别是在基坑开挖期间,期间桩体水平位移是全部位移的60%~80%,钢支撑对基坑壁水平位移具有显著的控制作用。
The principle and technology of measuring horizontal displacement of deep foundation piles are introduced. Based on the horizontal displacement of the piles in a metro station, 26 monitoring and measuring stations for deep horizontal displacement of piles are established on four sides of the foundation pit, A 10-month on-site monitoring using the TFL-CCX-D1 mobile inclinometer was carried out, and the horizontal displacement of the pile during the foundation pit dewatering, excavation, erection support and main structure construction was obtained. At the same time, it is pointed out that the horizontal displacement monitoring of piles is the key index for the construction of pit information. Especially during the excavation of the foundation pit, the horizontal displacement of the pile is 60% -80% of the total displacement. Displacement has a significant control.