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针对基坑变形监测基准点偏移的工程现象,根据距离差分定位原理,采用平面截割法,提出了一种新的基坑变形监测基准点原位校正技术,对平面截割双曲线的数学过程进行了推导,给出了该技术的实现过程,展示了采用平面截割法直接绘制出偏移点位置的基本方法,采用MATLAB软件编写了应用程序.采用该方法对某护城河岸附近一基坑变形监测基准点进行了原位校正,获得了理想的效果.该校正方法操作简单,实用性强,具有较好的工程推广应用价值.
Aiming at the engineering phenomenon of foundation pit deformation monitoring datum point offset, a new method of in situ calibration of foundation pit deformation monitoring datum point is put forward according to the theory of distance difference locating and plane cutting method. The mathematics of plane cutting hyperbolic curve The process of this method is given, the realization process of this technique is given, the basic method of plotting the position of the offset point by plane cutting method is presented, and the application program is programmed by MATLAB software.Using this method, Pit deformation monitoring reference point was corrected in situ, and achieved the desired result.The calibration method is simple, practical, and has good engineering application value.