工作基点的位移对观测点的影响分析

在基坑变形监测工作中,受场地条件的限制,工作基点往往只能埋设在基坑边相对稳定的地方,因此,工作基点也会产生位移。针对在施工现场进行变形观测时工作基点易于发生变动的情况,分析和讨论了工作基点位移的确定以及其位移给观测点带来的影响,提出相应的修正方法,并结合工程实例进行了分析。

Effect analysis of observation point based on the displacement of the working reference point

In conventional foundation pit deformation monitoring ,due to the limit of field environment the datum points can be only built in a relatively stable area near the foundation pit .So it is inevitable that the datum points may move during the survey .With respect to the move of the basic work point on the construction site w hen conducting deformed observation ,this paper mainly analyzes and discusses how to determine the motion of datum points ,and explains its influence to observation points . And a corresponding correction method is proposed .Finally ,an engineering project is combined to obtain some conclusions .