Determination of Dynamic Displacements of the Roof of Sports Hall Arena Zagreb

Abstract

Determination of construction displacements and deformations are an important parameter in assessing the condition and safety of the construction in its exploitation. Also, we get confirmation whether a structure is consistent with project solutions. Constant development of surveying instruments enables to deal with more complex and demanding tasks that are facing engineering geodesy. Surveying instruments can measure, not only static and very slow displacements of the constructions, but also and faster (dynamic) displacements. In this paper, the possibilities of geodetic measuring instruments to determine the dynamic response of structures in exploitation, is presented. The instruments (GPS and Robotic total station) were used to measure dynamic response of main cable at the roof of the sports hall Arena Zagreb during an artificially induced excitation. Frequencies of main cable determined by GPS and robotic total station were compared to the frequencies determined by the accelerometer. The analysis and the results of comparison are presented in this paper.