Abstract
An RTK-GPS (Leica MC1000) has a nominal accuracy of 1cm +1ppm for horizontal displacements with a sampling rate of 10Hz. The object of this paper is to demonstrate the feasibility of RTK-GPS for wind-induced response measurements and its efficiency in measuring the displacement of a full-scale tower and to study the feasibility of hybrid use of FEM analysis and RTK-GPS for detecting the integrity of structures during strong typhoons. The efficiency of RTK-GPS is demonstrated in the full-scale measurement of an actual steel tower. According to the feasibility study of RTK-GPS for measuring wind-induced responses of buildings, the responses with amplitudes larger than 2cm and natural frequencies lower than 2Hz can be detected by RTK-GPS. Hybrid use of RTK-GPS and FEM analysis for real time monitoring of the integrity of structures is proposed and its efficiency is demonstrated.
