Application of Total Station Free Station Method in Three-dimensional Deformation Monitoring of Foundation Pit
Aiming at the disadvantages of traditional foundation pit horizontal displacement and vertical displacement monitoring meth-ods such as cumbersome operation and low efficiency, this paper adopts Leica TS15 intelligent total station free station method to im-prove it and realizes the fast and simultaneous acquisition of horizontal and vertical displacements of the top of the foundation pit enve-lope structure. By expounding the principle and adjustment process of the free station method in detail, this paper uses a building foundation pit project to carry out an example application, analyzes and studies the station setting accuracy, and compares and analy-zes the deformation data obtained by the traditional monitoring method. The results show that: the root mean square error of free station point is about 2 mm, which meets the requirement that the root mean square error of the station point is less than 3 mm in the specifi-cation. The difference as compared with the traditional monitoring method is relatively small and meets the accuracy requirements of the second-class foundation pit monitoring specification. When it applies to the first-class foundation pit monitoring, a high-accuracy total station with an angle measurement accuracy of 0.5″ should be used for monitoring operations to ensure that the monitoring data meets the specification accuracy requirements.
intelligent total stationfree station methodroot mean square errordeformation monitoring
万方数据
维普
