1st Croatian Conference on Earthquake Engineering 1CroCEE 2021

Aseismic design of structures in seismic prone regions is a complex process consisting of structural system definition, selection of foundation depth and type, definition of external impacts – both, gravitational and seismic, proper detailing and definition of stability and vulnerability level. Stability of a structure is controlled by the structural dynamic response under real seismic loads.
In the period from 11.11.2020 to 12.11.2020 in the immediate vicinity of the national park "Mavrovo", a series of earthquakes occurred, which were felt by the local population. The main shock occurred on 11.11.2020 at 04:54 local time, with a moment magnitude MW = 5.0, and was followed by a series of aftershocks with a local magnitude in the range of 1.5 to 4.9.
As a result of the seismic activity in this period, the instruments, which are part of the strong motion network in Republic of North Macedonia were activated. Strong motion data were recorded at fourteen different locations of instruments installed on bedrock.
In the affected region, ground floor wooden structures are prevailing and therefore the damages due to the earthquake were very light. In this paper, comprehensive investigations regarding recorded time histories and different structural types are presented.
Three structures of different geometry, structural system, different number of stories subjected to real accelerograms from Mavrovo earthquake have been analysed. Comparison and comments in respect to the results are made. Finally, based on the analysis results, a recommendation of the most appropriate time histories records from Mavrovo earthquake for specific types of structures have been defined.