Seismic microzoning of Belgrade

Lee, V.W.; Trifunac, Mihailo D.; Bulajić, Borko Đ.; Manić, M.I.; Herak, Davorka; Herak, Marijan

doi:10.1016/j.soildyn.2017.02.002

Cited by 23 publications

(18 citation statements)

References 53 publications

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“…Expectations of all UHS amplitudes will then have the same probability of exceedance in t years. Several recent studies of seismic microzonation in the region of north-western Balkans [25][26][27][28][29][30], which considered frequency-dependent attenuation equations and took also into account the deep geology effects, have confirmed the merits of the UHS approach. The comparison between the UHS-based and standard seismic microzonation studies is presented in Figure 3.…”

Section: Citymentioning

confidence: 81%

“…However, several regional seismic microzonation and strong ground motion studies [24][25][26][27][28][29][30] have shown that the deep geology, i.e., the geological characteristics up to depths of hundreds of meters or even a few kilometers [31], strongly influence seismic waves with both the shorter and longer oscillation periods. These studies show that even if the shallow geology description takes into account more than 30 m of the local soil depth (e.g., in the case we use the Seed's et al [32] classification), empirical predictions may still be biased, so the deeper geology conditions need to be considered.…”

Section: Citymentioning

confidence: 99%

“…However, it is expected that the long and intermediate period waves may be dominated by the contribution from larger and more distant earthquakes. What is even more important, the long and intermediate period spectral amplitudes are strongly influenced by the presence of deep geological sediments, just like those that are present in the Pannonian Basin [24,29]. For the more reliable definition of seismic action for the city of Osijek, for example, future seismic studies should include careful interpretation of deep geological site characteristics and their effect on the spectral shapes.…”

Section: Citymentioning

confidence: 99%

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A Contribution to a UHS-Based Seismic Risk Assessment in Croatia—A Case Study for the City of Osijek

2020

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Due to increases in the number of inhabitants and their concentrations in densely populated areas, there is a growing need in modern society to be cautious towards the impact of catastrophic natural events. An earthquake is a particularly major example of this. Knowledge of the seismic vulnerability of buildings in Europe and around the world has deepened and expanded over the last 20 years, as a result of the many devastating earthquakes. In this study, a review of seismic risk assessment methods in Croatia was presented with respect to the hazard, exposure, and vulnerability of buildings in the fourth largest city (Osijek) in Croatia. The proposed algorithm for a detailed risk assessment was applied to a database and is currently in its initial stage.Sustainability 2020, 12, 1796 2 of 24 to estimate the losses. These losses can be assessed in a material form, through the damage of the building stock or non-structural elements of buildings, or in the form of casualties or injuries during the earthquake [10,11]. The last step is to analyze uncertainties, costs, decision-making criteria, etc. The ultimate goal of studying earthquakes and their impact on people and buildings is to create a safer environment, in case an earthquake occurs.The basic elements of the earthquake risk assessment process are shown in Figure 1.Sustainability 2020, 12, 1796 2 of 25 probable intensity in a given geographical area). Then, based on the available data from the exposure model, evaluate the damage using one of the existing vulnerability assessment methods in order to estimate the losses. These losses can be assessed in a material form, through the damage of the building stock or non-structural elements of buildings, or in the form of casualties or injuries during the earthquake [10,11]. The last step is to analyze uncertainties, costs, decision-making criteria, etc. The ultimate goal of studying earthquakes and their impact on people and buildings is to create a safer environment, in case an earthquake occurs. The basic elements of the earthquake risk assessment process are shown in Figure 1.

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Section: Citymentioning

confidence: 81%

Section: Citymentioning

confidence: 99%

Section: Citymentioning

confidence: 99%

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A Contribution to a UHS-Based Seismic Risk Assessment in Croatia—A Case Study for the City of Osijek

2020

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“…Several recent studies have shown that such local soil and groundwater features may significantly affect the severity of the surface ground motion during strong earthquakes [10][11][12][13]. Seismic microzonation studies in the north-western Balkans [14][15][16][17][18] and a recent study of strong earthquake ground motion in the same region [19] have also shown that deep geological sediments strongly affect the severity of both longer and shorter wave periods. The same studies have shown that in areas with moderate local seismicity but with deep geological sediments, the severity of longer wave periods can be significant during more distant earthquakes.…”

Section: Seismic Exposurementioning

confidence: 99%

Development of Seismic Vulnerability and Exposure Models—A Case Study of Croatia

et al. 2020

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Assessing earthquake risk and building vulnerability requires an exposure model. These exposure models quantify the building stock in terms of structural characteristics, spatial location, and occupancy. The most significant exposure parameters are the structural characteristics of buildings, which must be uniformly covered by structural typologies. Structural typologies that take into account the regional specificities of design and construction provide more accurate and reliable exposure models. Despite the long history of earthquake engineering in the Republic of Croatia, the assessment of exposure and vulnerability of buildings is a rather new concept, hindered by the fact that no city in the Republic of Croatia has a database on the number, types, and characteristics of existing buildings. The article presents the creation of a building exposure model for the city of Osijek, points out the problems and concerns that the realization process brings, and details the practical solutions and strategies that have been used to achieve the set goals.

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“…Moreover, a series of recent seismic microzonation studies in the north-western Balkans (Lee et al, 2015(Lee et al, , 2017aBulajić et al, 2018) and a recent study of strong earthquake ground motion in the same region (Bulajić et al, 2013) showed that deep geological sediments strongly affect the severity of both longer period waves, even in the case of distant earthquakes (Lee et al, 2016a,b). This is especially important for regions like the area of the city of Osijek and its vicinity where deep sediments, which are dominantly present, can experience significant shaking from more distant earthquakes.…”

Section: Classification Of Structural Systemsmentioning

confidence: 99%

The Vulnerability of Buildings From the Osijek Database

Pavić

Bulajić

Hadzima-Nyarko

2019

Front. Built Environ.

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Estimating of buildings vulnerability is based on a well-organized and detailed database of buildings and their characteristics. Creation of the buildings database of the city Osijek is in progress. This database contains, for each building, information regarding its location, geometric and structural characteristics, materials which were used for structural elements, and other relevant data. This paper presents numerical and statistic values of some characteristics of the buildings from the database. Different methods can be applied for the prediction of damage probability in the field of earthquake risk assessment. With the empirical Macroseismic method and the analytical Capacity Spectrum Method, the vulnerability of the few blocks of buildings, typical for the city Osijek, is estimated. For unreinforced masonry structures with flexible floors, the probability of reaching a certain degree of damage is estimated by the two selected methods, and the obtained results are compared.

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Seismic microzoning of Belgrade

Cited by 23 publications

References 53 publications

A Contribution to a UHS-Based Seismic Risk Assessment in Croatia—A Case Study for the City of Osijek

A Contribution to a UHS-Based Seismic Risk Assessment in Croatia—A Case Study for the City of Osijek

Development of Seismic Vulnerability and Exposure Models—A Case Study of Croatia

The Vulnerability of Buildings From the Osijek Database

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