
Lidija KrstevskaUniversity Ss Cyril and Methodius, Skopje, Institute Of Earthquake Engineering And Engineering Seismology · Dynamic testing and informatics
Lidija Krstevska
PhD, M.S., B.Sc
About
65
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Introduction
Lidija Krstevska currently works at the Dynamic Testing and Informatics department, Institute Of Earthquake Engineering And Engineering Seismology.
Additional affiliations
March 1981 - present
Publications
Publications (65)
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...
Evaluation of seismic stability and behavior of structures involves several important aspects and activities that should be considered. Among these is testing of scaled models on a shaking table. Within several complex international projects related to the problem of seismic stability of historic masonry structures, a number of tests were performed...
Railway traffic-induced vibrations are becoming one of the major environmental concerns in urban areas. Such vibrations may affect the quality of life of people settled in the vicinity of railway lines with frequent traffic. This paper contains the results from the research conducted by in-situ measurements and numerical modelling of railway traffi...
Composite nature of the masonry structures in general causes complex and non-linear behaviour, especially in intense vibration conditions. The presence of different types and forms of structural elements and different materials is a major problem for the analysis of these type of structures. For this reason, the analysis of the behaviour of masonry...
Reliable estimation of seismic stability of structures built in seismically active regions is an objective that requires a complex investigation and different types of activities. For historical structures and monuments, this requirement is even more essential, because many of them represent unique heritage structures. In-situ testing of a monument...
The paper deals with the seismic investigation of two masonry churches, namely Visitazione and San Giuliano, which are located in Poggio Picenze, a small town about 10 km far from L’Aquila. The seismic response assessment of the churches, which were damaged by the severe seismic event occurred in Italy on 2009 April 6th, has been performed by means...
The paper deals with the investigation of the seismic behaviour of a masonry church sited in Poggio Picenze (district of L’Aquila) and damaged by the L’Aquila seismic event occurred in Italy on 2009 April 6th. This earthquake, classified as an exceptional event, caused significant damages to about 15,000 buildings. Above all, many of the cultural s...
Nowadays, there is an increasing need and interest in the preservation of cultural heritage, which includes historical buildings and monuments. Considering the time of their construction, when the main building material was stone or brick, they belong to masonry constructions. With the increase of moving loads in the vicinity of such objects, as we...
A commonly used method for increasing the resistance of historical structures, made of stone blocks with dry joints, is strengthening with the metal connectors. The numerical modelling of these structures is demanded due to a discontinuous nature and composition of the materials with significantly different properties. This paper presents a new num...
Throughout history, dry‐stone masonry structures have been strengthened with different types of metal connectors in order to increase their resistance which enabled their survival, especially in the seismically active area. One such example is the ancient Protiron monument placed in the Peristyle square of the Diocletian's Palace in Split, Croatia....
Sažetak Zidani lučni mostovi zbog svojega karakterističnog izgleda i kompleksnosti materijala od kojih su građeni i danas su predmet eksperimentalnih i numeričkih analiza. Jedan od istaknutih primjera ovog tipa konstrukcija jeste i Stari most u Mostaru, koji je, zajedno s lokalitetom mosta, pod zaštitom UNESCO od 2005. godine. Upravo je ovaj simbol...
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...
Comprehensive analysis of seismic resistance of historical ancient monuments is an important aspect in rehabilitation of such structures. Most of them are made of stone blocks with dry joints and sometimes strengthened with metal connectors. Due to discontinuous nature and composition of the materials with significantly different properties, comput...
In the present paper the experimental and numerical activities related to in-situ Ambient Vibration Tests performed on a monumental masonry building placed in Castelnuovo of San Pio (Italy) are presented. The obtained experimental results, able to identify the dynamic characteristics of the investigated palace, have been successively reproduced by...
A great number of buildings which are classified as cultural heritage are historic structures made of stone blocks with dry joints. Some of them, which were originally built with mortar in the joints, have experienced mechanical degradation over time and the behaviour of these structures becomes similar to those made of dry stone masonry. Most of t...
One of the oldest techniques for improving resistance of dry stone masonry structures is strengthening by clamps and bolts which are inserted into the previously made holes that are subsequently backfilled with lead. Despite the complexity and high cost price of this procedure, stone masonry structures classified as cultural heritage, especially th...
For the assessment and for monitoring of timber structures there are numerous promising methods that enable the quantitative description of the current condition of construction elements or parts of a structure. This concerns material properties like modulus of elasticity, moisture content and density as well as structural properties like dynamic c...
This paper deals with two base isolation techniques for seismic protection of historical monuments. The effectiveness of these techniques was investigated experimentally on reduced scale models of two Byzantine churches located in Macedonia by shake-table testing at the Dynamic Testing Laboratory of the Institute of Earthquake Engineering and Engin...
Historical monuments represent structures for which seismic analysis cannot be performed by using seismic design codes for modern buildings. Obtaining of the dynamic characteristics of such structures, along with knowing the site seismicity and the characteristics of soil deposits where they are located, is one of the several important criteria for...
ABSTRACT
In this paper, identification of the dynamic properties of the 27 storey, named Canyon Building
(located in Istanbul) was performed based on earthquake and ambient vibration records. Three records
were considered for this study: one ambient vibration record and records of two earthquakes with
moderate intensity. The records were obtained b...
The paper gives a common presentation of the most popular testing methods, procedures and sensors related to in situ full scale experimental testing of structures for definition of their dynamic characteristics. These structural properties are necessary for reliable estimation of seismic stability when structures are located in seismically active r...
This paper deals with three base isolation techniques for seismic protection of two different types of structures: liquid storage tanks and buildings. The effectiveness of these techniques was investigated experimentally on reduced scale models in laboratory conditions at the Dynamic Testing Laboratory of the Institute of Earthquake Engineering and...
The dynamic stability of a timber shell roof structure of the Palasport located in Bologna, has been investigated by means of reduced 1/30 scale model tested on seismic shaking table at Dynamic Testing Laboratory of IZIIS, Skopje, Macedonia. The model was physically modeled according to similitude lows and Buckingham's theorem as an artificial mass...
Within the bilateral scientific project between the Institute of Earthquake Engineering and Engineering Seismology -UKIM-IZIIS, St. Cyril and Methodius University, Skopje, Republic of Macedonia and the Civil Engineering Faculty, University of Zagreb, Croatia, experimental testing of full scale composite timber-glass innovative panels was carried ou...
Laminated glass with its physical and mechanical properties is widely used for façades in commercial and residential buildings. Special attention must be paid for such buildings when located on the earthquake prone areas. Glass as material is non-ductile and behaves elastically until failure, and for these reasons we must be focused on the details...
The paper presents an insight in on going research of wooden frames infilled by glass panels. Researchers from three institutions, University of Ljubljana, University of Zagreb and IZIIS Skopje joint their efforts to develope an innovative structural element for use in contemporary buildings. Because the research is in relatively early stage only t...
The paper shows the results obtained by seismic testing of innovative composite panels, i.e. a model composed of glued laminated wood and bearing glass tested on the shaking table in the Institute of Earthquake Engineering and Engineering Seismology-UKIM IZIIS, Ss. Cyril and Methodius University, Skopje, Macedonia. The investigation has been perfor...
As a part of complex activities of the project for evaluation of the existing seismic stability of the monastery complex St. Mary Peribleptos in Ohrid, Republic of Macedonia, experimental in-situ testing of the church, the bell tower and the doss-house was performed by use of the ambient vibration testing method. The objective of the test was to ob...
Within the frame of the Macedonian-Slovenian scientific cooperation, the Institute of Earthquake Engineering and Engineering Seismology (IZIIS) from Skopje, Macedonia and the Slovenian National Building and Civil Engineering Institute (ZAG) from Ljubljana, Slovenia, a bilateral project entitled: Development and Application of Seismic Base-isolation...
In the present paper the experimental and numerical activities related to in-situ ambient vibration tests performed on a monumental masonry building placed in Castelnuovo of San Pio (AQ) are presented. The tests were carried out in May 2010 within the scientific cooperation between the University of Naples "Federico II" and the University St. "Cyri...
Within the frame of the scientific cooperation between the Institute of Earthquake Engineering and Engineering Seismology (IZIIS), Skopje, Macedonia and the Kandili Observatory and Earthquake Research institute (KOERI), Istanbul, Turkey, a three year project entitled: ''Harmonisation of the testing procedure of large scale and medium scale models o...
A finite element analysis was carried out to assess the seismic behavior of Mustafa Pasha mosque in Skopje and the efficiency of a CFRP-based strengthening technique. The numerical models of the as-built and retrofitted mosque were calibrated and validated against the results of an extensive experimental investigation based on shaking table tests o...
This study presents the determination of modal properties of a historical masonry palace built between 1861 and 1865 in Istanbul. Both an experimental and a numerical study have been performed. The experimental study was based on ambient vibration survey while numerical analysis was based on finite element analysis of the structure. The results 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...
The ALSC base isolation system was investigated by testing a church model to the scale 1/3.5 on the two-component shaking
table at the IZIIS’ Laboratory, Skopje, Macedonia. The investigation was performed within the frames of the European FP6 project
PROHITECH, related to seismic protection of historical buildings by innovative and reversible mixed...
To evaluate the seismic stability of Mustafa Pasha Mosque in Skopje strengthened by an advanced mixed technology, shaking table tests were carried out on a model in scale 1:6. The investigation was performed within the activities of the Sixth Framework Program PROHITECH – “Earthquake Protection of Historical Buildings by Reversible Mixed Technologi...
The seismic stability of the facade brick-masonry walls of the machinery building of the Beauharnois powerhouse near Montreal,
Quebec, Canada were investigated numerically by use of non-linear models and applying experimental methods on site and on
the IZIIS’ seismic shake-table. The dynamic properties of the machinery building were obtained by amb...
Presented in the paper are the results obtained by experimental in-situ testing of four selected historical monuments in the region ofAbruzzo damaged during the earthquake in 2009.Ambient vibration testing method was applied to obtain their dynamic characteristics: natural frequencies, mode shapes of vibration and damping coefficients.The testing o...
This paper deals with the experimental results obtained by in situ and model testing of a segment of the pipeline system of a thermal power plant. The field testing has been performed by using the forced and ambient vibration method. The model testing has been performed by means of a shaking table. The model was designed and constructed to the scal...
This paper contains materials of the earliest stage of researches made within the framework of the project for protection and strengthening of Byzantine Church "St. Nikola"-Macedonia. For the purpose of the numerical analysis two 3D models of the church have been made. The modeling has been carried out with 3D finite elements (brick elements) in SO...
In the companion paper with the same main title, [Tashkov et al, 2006], the important role of the pipeline systems for the proper functioning of the integral system for production of electricity at a thermal power plant (TPP) was emphasized. The subject of this paper is the numerical simulation and verification of the experimental tests on the 1/3...