Akademik Veri Yönetim Sistemi
4th International Civil Engineering & Architecture Conference, Trabzon, Türkiye, 17 - 19 Mayıs 2025, ss.1664-1672, (Tam Metin Bildiri)
Earthquake performance analyses of the damaged buildings which are classified as the medium damage level are carried out after the devastating earthquakes. Then the retrofit project is prepared by evaluating the earthquake performance analysis data and results, and the retrofit construction starts after the construction permit is obtained. Technical drawings of the structural and architectural elements are required to conduct earthquake performance analysis. However, it is quite common that buildings are constructed without completely complying with the approved static and architectural technical drawings or the aforementioned technical drawings might be lost long after their construction. For these reasons, a detailed building survey becomes mandatory. In this study, a cost analysis of the surveying of a building using UWB (ultra-wideband) indoor positioning sensors and SLAM (Simultaneous Localization and Mapping) based algorithms is performed. In the first phase of the study, 5 UWB sensors were placed in a suitable room of the building and positioning was performed using the multilateration method with these sensors. However, a SLAM-based tool was developed in the rooms where positioning accuracy deteriorated or position information could not be obtained in case of multipath effect and signal transmission failure due to obstacles such as furniture and walls in the building, and both positioning and mapping were performed with this tool. In addition, the effect of the placement pattern of the sensors on the cost and positioning accuracy was analyzed. The building survey was completed by considering the cost and technical feasibility of the implemented methods. The focus of the study is to examine in detail the cost of the survey work done with the integration of these two different technologies. Within the scope of the cost analysis, elements such as sensor and device purchases, equipment installations and software development were evaluated.