TY - JOUR AU - Trung Dung PHAM AU - Quoc Khanh PHAM AU - Xuan Cuong CAO AU - Viet Hung NGUYEN AU - Sy Cuong NGO PY - 2021/12/20 Y2 - 2024/03/29 TI - The capability of terrestrial laser scanning for monitoring the displacement of high-rise buildings JF - Inżynieria Mineralna JA - IM VL - 1 IS - 2 SE - DO - 10.29227/IM-2021-02-47 UR - https://inzynieriamineralna.com.pl/index.php/testowe/article/view/268 AB - Recently, terrestrial laser scanner (TLS) has been increasingly used to monitor ofdisplacement of high-rise buildings. The main advantages of this technique are time-saving, higherpoint density, and higher accuracy in comparison with GPS and conventional methods. While TLS isordinary worldwide, there has been no study of the capability of TLS in monitoring the displacement ofhigh-rise buildings yet in Vietnam. The paper's goal is to build a procedure for displacement monitoringof high-rise buildings and assess the accuracy of TLS in this application. In the experiments, a scannedboard with a 60 cm x 60 cm mounted on a moveable monument system is scanned by Faro Focus3DX130. A monitoring procedure using TLS is proposed, including three main stages: site investigation,data acquisition and processing, and displacement determination by the Cloud-to-Cloud method (C2C).As a result, the displacement of the scanned object between epochs is computed. In order to evaluate theaccuracy, the estimated displacement using TLS is compared with the real displacement. The accuracydepends on scanning geometry, surface property, and point density conditions. Our results show that theaccuracy of the estimated displacement is within ± 2 mm for buildings lower than 50 m of height. Thus,TLS completely meets the accuracy requirements of monitoring displacement in the Vietnam Standardsof Engineering Surveying. With such outstanding performance, our workflow of using TLS could beapplied to monitor the displacement of high-rise buildings in the reality of geodetic production inVietnam. ER -