Institute of Earthquake Engineering and Engineering Seismology

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Harmonized methodology for cross-border hazard and risk assessment of earthquake-induced landslides at regional scale
(Springer Science and Business Media LLC, 2025-03-25)
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Fotopoulou, Stavroula
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Bozzoni, Francesca
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Nonlinear analysis of an RC frame structure considering the effects of embedment on soil–structure interaction
(Faculty of Civil Engineering and Architecture Osijek, 2025-12-03)
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Bojadjiev, Jordan
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Experimental dynamic damage assessment of PUFJ protected brick infilled RC building during successive shake table tests
(Polish Academy of Sciences Chancellery, 2023-03-02)
Chełmecki, Jarosław
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Rakicevic, Zoran
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Kwiecień, Arkadiusz
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Halici, Omer Faruk
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Vanian, Vachan
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Rehabilitation of SDOF systems under air blast loading with a modified negative stiffness amplifying damper
(Springer Science and Business Media LLC, 2022-04-08)
Kiran, K. K.
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Noroozinejad Farsangi, Ehsan
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Gharehbaghi, Vahidreza
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Bogdanovic, Aleksandra
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Shake table test of RC walls' coupling provided by slabs
(Centre for Evaluation in Education and Science (CEON/CEES), 2021)
Isaković, Tatiana
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Gams, M.
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Janevski, A.
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Rakićević, Z.
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Bogdanović, A.
<jats:p>When designed to the seismic load effects, reinforced concrete walls connected by slabs without coupling beams are usually considered cantilever walls. Several recent studies indicated that slabs themselves could provide strong coupling in some cases, and the walls could respond differently from cantilever walls. To study the slab-to-wall piers interaction, a shake table test of the half-scale three-story specimen was conducted within HORIZON 2020 SERA-TA project. The specimen consisted of four rectangular walls linked by three slabs. It was subjected to a series of seismic excitations of increasing intensity. In the last three tests, the nonlinear response of the slabs and wall piers was observed. At the strong seismic excitations, one pier was subjected to strong tensile, while the adjacent pier was subjected to strong compression forces. The crack pattern of piers was asymmetric and different from the cross-shaped damage pattern, typical for cantilever walls. The coupling of wall piers provided by slabs was considerably stronger than it was expected. The share of the overturning moment resisted by the frame action induced by the slabs was more than 50%. All slabs were fully activated and significantly damaged. Their damage was primarily flexural. The effective width of slabs was equal to their total width.</jats:p>
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Shake Table Testing of Self‐Centring Concentrically Braced Frames
(Wiley, 2021-09)
Goggins, Jamie
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Jiang, Yadong
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Broderick, Brian M.
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Salawdeh, Suhaib
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O'Reilly, Gerard J.
<jats:title>Abstract</jats:title><jats:p>The self‐centring system presented in this paper is a novel damage control technique designed to improve the resilience of concentrically braced frames (CBF) under seismic action. Namely, traditional CBFs can undergo large residual drifts following an earthquake event which can limit the opportunity for cost‐effective repair of the structure. Additionally, the gusset plates connecting the brace members to beams and/or columns can experience substantial rotations as a result of the compression buckling of the bracing members. Through the utilisation of post‐tensioning strands placed between flanges of beams, the novel self‐centring concentrically braced frame (SC‐CBF) system can return the frame to its original position after significant inelastic deformations experienced during large earthquakes, resulting in minimum residual drifts.</jats:p><jats:p>In this paper, shake table testing of the aforementioned SC‐CBF system subjected to realistic earthquake loading is presented. The research is carried out as part of the H2020 “Seismology and earthquake engineering research infrastructure alliance for Europe” SERA project. Four sets of bracing configurations, incorporating varying square hollow section (SHS) braces and gusset plates were utilised in the shake table testing. Uniaxial loading with varying shake table accelerations was executed and the structural response evaluated using data from strain gauges (SG), load cells (LC), displacement transducers and accelerometers. The measured results provide information on the important parameters such as the tensile and compressive strength of the braces, post‐buckling capacity, gusset plate strains and post‐tensioning force. These findings are then presented and the crucial local and global response performance emphasised.</jats:p>
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A new approach in simulation of soil-structure interaction problems including damper effects
(Inderscience Publishers, 2020)
Edip, Kemal
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Bogdanovic, Aleksandra
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Stojmanovska, Marta
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Poposka, Angela
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Farsangi, Ehsan Noroozinejad
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Ambient Vibration Testings and Field Investigations of Two Historical Buildingsin Europe
(Computers, Materials and Continua (Tech Science Press), 2020)
Noroozinejad Farsangi, Ehsan
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Bogdanovic, Aleksandra
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Rakicevic, Zoran
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Poposka, Angela
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Stojmanovska, Marta
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Analysis of exponent K based on “SHARE” project data and its implications on importance factors of EN 1998–1
(Springer Science and Business Media LLC, 2022-02-08)
Dragojević, Dejan
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Šalić Makreska, Radmila
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Milutinović, Zoran
This contribution deals with seismic activity represented by a hazard curve through a single parameter–exponent k as given in EN 1998–1 and its implications on importance factors. We used the SHARE project dataset to calculate exponent k for the wider European area, and a limited number of separate national studies for comparison of the results since comparison to the SHARE results on the same dataset resulted in values of exponent k smaller by 1–1.5. The results indicate that the recommended value of exponent k of 3 is rather an exception than an expected value in seismically active regions and that, with the exclusion of the Vrancea zone, for the majority of Europe, exponent k is well below that assumed in EN 1998–1, which consequently indicates that the importance factors for these locations should be higher than those recommended in EN 1998–1.
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Genealogy of development and codification of Yugoslavian earthquake resistant design
(Springer Science and Business Media LLC, 2022-08-30)
Milutinovic, Zoran
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Salic Makreska, Radmila
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Tomic, Daniel
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Trajcevski, Jovan
This contribution aims to clarify for exposure modelers and vulnerability and seismic risk assessors the basis on which seismic lateral loads have been established in all Yugoslavian seismic design codes since 1948. The particular focus is on JUS39/64 and JUS31/81 seismic design codes since they controlled the seismic safety of Macedonian (and Yugoslavian) exposure for 16 and 41 years, respectively. The analyses and discussions are centered on lateral force coefficients as a primary factor for representing the features of each design level. Presented is in all detail the developed K-Quotient method that efficiently compares inter-code lateral force levels. The method provides the closed solution for simplified lateral load calculation applicable to “stiff” buildings (T ≤ 0.5 s). The presented results are indicative of flexible buildings requiring further research on the subject.

Institute of Earthquake Engineering and Engineering Seismology

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