Influence of pounding on seismic performance of existing buildings in the city of Zagreb, Croatia

Author(s): Jakov Oreb, Božen Mušterić, Marta Šavor Novak, Josip Atalić
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 556-563
Total Pages: 848
Language: English

Abstract: Many buildings in Zagreb were built before the first seismic codes appeared in the region, thus, the separation gaps between buildings were not constructed in accordance with modern seismic rules and regulations. Therefore, the aim of this study was to investigate potentially detrimental effect of pounding on the existing structures and consequently, improve current building seismic vulnerability database of the city, located in seismically active zone.
Several adjacent buildings were investigated, representing three categories: eccentrically located adjacent buildings, buildings in rows and buildings with different heights.
Three-dimensional numerical models of buildings were constructed on the basis of “as built” structures, calibrated with the results of ambient vibration testing. In everyday practice, adjacent buildings are often analysed as detached units. Therefore, results obtained by time-history analysis of numerical models with separation gaps defined as nonlinear link elements, were compared to the results of analyses performed using traditional methods (response spectrum and equivalent static forces) on adjoining buildings modelled as standalone structures and rigidly connected adjacent structures.
Analyses results show that pounding has different influence on analysed buildings from the three categories: eccentrically located adjacent buildings are the most threatened, followed by buildings with different heights, while buildings in rows are the least vulnerable.

Online publication :2019
Publication type : full_text
Public price (Euros) : 00