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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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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 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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A hybrid seismic isolation system toward more resilient structures: Shaking table experiment and fragility analysis
(Elsevier BV, 2021-06)
Rakicevic, Zoran
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Bogdanovic, Aleksandra
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Noroozinejad Farsangi, Ehsan
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Sivandi-Pour, Abbas
The effectiveness of various vibration control strategies has always been a debate among structural engineers. Seismic base isolation systems and passive dampers are recognized as two of the most economical devices which have passive mechanisms in reducing the structural vibration and responses. To this end, comprehensive biaxial shake table testings have been carried out on a building frame with and without a proposed base isolation system. The proposed device has a novel combined isolation mechanism at the structure's base. By different methods of testing, natural frequencies and viscous damping for the frame model with and without the proposed system were identified. Both structures were intensively tested under various earthquake motions, and various structural responses were recorded. The experimental results indicated that the newly proposed system is very effective in controlling the vibration of building structures and can be used to increase the seismic resilience metrics. As a complementary investigation, the incremental dynamic analysis (IDA) was conducted to develop the seismic fragility curves under both near-field and far-field strong ground motions (SGMs). The fragility estimations indicated that the proposed system has a higher collapse margin ratio (CMR) compared to conventional fixed-base frames.

Institute of Earthquake Engineering and Engineering Seismology

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