Zoran Tomislav Rakicevic

Saints Cyril and Methodius University of Skopje · Institute of Earthquake Engineering and Engineering Seismology

Europe is characterised by a high level of seismic risk, both in terms of intensity and frequency, as evidenced by the significant damage caused to the region's building heritage. Italy is one of the most seismically active areas in the Mediterranean Basin, having experienced several destructive events in recent decades. Therefore, it is essential...

The occurrence of earthquakes is inevitable event, that has happened in the past and will happen in the future. Their impact to the human life and the damage they cause is strictly governed by the design of the structures and the quality of construction. Even though nowadays the earthquake engineering science is highly developed there is no flawles...

Telecommunication tower with height of 155 m is located on the top of Vodno Mountain near Skopje, R. N. Macedonia. The complexity of the structure, the extreme building conditions as well as the high seismic zone and exploitation period led to a design and construction phase accompanied by experimental testing to validate the performance of the str...

Continuous safe and low-cost operation of structures extensively depends on their proper maintenance and management. To apply optimal management strategies for the existing structures, accurate assessment of their present and future safety is important and crucial. Hence, monitoring of structures can be considered a necessary condition for providin...

Within SERA Horizon 2020 INMASPOL project, the paper reports the first results from seismic tests on shake table for a real scale reinforced concrete (RC) frame building with modified orthoblock brick wall infills. The building received innovative protection using polyurethane resin (PU) flexible joints (PUFJ) at the frame-infill interface together...

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. Addit...

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 testin...

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 int...

In this study, the methodology and results of ambient vibration-based investigations of the historical Tash Mosque in Kosovo and a 3-story historical building in Bulgaria are presented. The investigations include full-scale in situ testing of both structures due to ambient vibrations induced by micro-seismic, wind, traffic, and other human activiti...

The behaviour of reinforced concrete frames with masonry wall infills is influenced a lot by the stiffness and strength difference between the frame and the infill, causing early detrimental damage to the infill or to the critical concrete columns. The paper reports the results from shake table seismic tests on a full-scale reinforced concrete (RC)...

Seismic design codes seek to limit structural displacements in order to minimise damage, but no explicit consideration is usually given to the state of the structure after the earthquake, which can be critical for re-occupancy, monetary losses and the rapidity of repair. In this paper, shake table testing of single-storey self-centring concentrical...

In this study, shake table tests of a multistory steel frame structure designed according to Eurocodes 3 and 8 with and without the newly developed prestressed viscous damper (PVD) have been carried out at the Institute of Earthquake Engineering and Engineering Seismology in Macedonia. An array of strong ground motion records has been applied to th...

Passive control of structures represents practical concept and qualitative change of the design and construction of new seismically resistant structures and strengthening of existing ones. The best distribution obtained by the minimization or maximization of the defined structural responses is achieved by optimal placement of the different types of...

In this research a specially manufactured wall paper made of fiber composite materials is proposed to enhance the seismic performance of the brittle brick masonry infill walls. To test the effectiveness shake table testing of full size specimens were conducted at the Dynamic testing laboratory at the Institute of earthquake engineering and engineer...

At IZIIS, within the framework of the SERIES project, two types of wireless sensors have been developed. The first one, the MIMRACS (Micro Integrated Measuring Recording and Communication System) sensor, presents an intelligent self-controlled high integrated GPS/GPRS/WEB based micro processing digital 3D measurement device, with the possibility of...

Structural control has been comprehensively studied over the world as a multidisciplinary research field. The present work is motivated by an attempt to give a common frame to the recent research and applications of structural control technology in civil engineering across Europe. They include novel passive dampers, functional materials and semi-ac...

In the scope of the transnational access activities within the 7th European Framework Program (FP7), SERIES (Seismic Engineering Research Infrastructures for European Synergies), Wienerberger AG and a group of European experts evaluated the seismic behaviour of full-scale prototypes of modern unreinforced thermal insulation clay block masonry build...

In the scope of the transnational access activities of the European research project SERIES, the Laboratório Nacional de Engenharia Civil (LNEC) has provided access to its 3-D shaking table to the international construction company Wienerberger AG and to a group of European experts, in order to perform full-scale seismic tests on an industrial solu...

The problem of earthquake protection of historic structures and monuments is radically different from that of other structures, due to the priority given to the preservation of the aesthetic, architectonic and historic value, instead of keeping the structure operational. In their effort to protect these structures with the least intervention and th...

In the paper the dynamic behavior of structures behaving like rigid blocks and a multi-plane steel frame are considered in order to study the most appropriate control system for vibrations. In the case of the rigid blocks the motion under pure rocking is analyzed and the problem is addressed of attenuation of the dynamic response by means of damper...

Large scale experiments performed on seismic shaking tables in the last 40 years have significantly influenced the development of earthquake engineering in general. They provide very useful information on materials, joints, elements and the overall structural behaviour when subjected to different earthquake motions in controllable laboratory condit...

A shaking table testing of a 16.6 t five storey steel frame structure with and tuned mass damper (TMD) named as Tuned Mass Control System (TMCS) installed at the top has been carried out in the Dynamic Testing Laboratory at the Institute of Earthquake Engineering and Engineering Seismology (IZIIS) in Skopje, Republic of Macedonia. For estimation of...

The cultural-historic heritage is the key element for the history and the identity of society, contributing to its economic and general well-being. Damages caused to historic buildings and monuments by earthquakes that occurred in the past are irreversible and these lost “documents” cannot be retrieved. In providing the protection of these structur...

Based on very large experimental data, obtained by shaking table testing of five story, three bay steel frame model of a hypothetical building with and without GERB BCS, mathematical modeling has been done using CSI SAP2000 computer program. A large number of analyses have been performed in order to model complex behavior of the BCS, considering di...

Intensive investigations in the field of the control of structural behaviour have been conducted at the Institute of Earthquake Engineering and Engineering Seismology in Skopje. Part of them, relating to energy absorption elements are presented in this paper. In order to provide a more sophisticated presentation of the characteristics and capabilit...

Based on very large experimental data, obtained by shaking table testing of a hypothetical building with and without GERB TMCS, mathematical modeling has been done using CSI SAP2000 computer program. A large number of analyses have been performed in order to model complex behavior of the TMCS. Its mechanical properties have been tuned using acceler...

The development of earthquake engineering in the past was very much dependent from the information gathered for the behaviour of the structures during real earthquake ground motion. Analysing on a long term the effect of the gathered information it is evident that the scientists were recommending that the earthquake design spectra in the codes have...