The effect of structural variability and local site conditions on building fragility functions

In this study, the effect of local site conditions (site class and site amplifications) and structural variability are investigated on fragility functions of typical building structures. The study area is chosen as Eastern Turkey. The fragility functions are developed using site-specific uniform hazard spectrum (UHS). The site-specific UHS is obtained based on simulated ground motions. The implementation of ground motion simulation into seismic hazard assessment has the advantage of investigating detailed local site effects. The typical residential buildings in Erzincan are represented by equivalent single degree of freedom systems (ESDOFs). Predictive equations are accomplished for structural seismic demands of ESDOFs to derive fragility functions in a straightforward manner. To study the sensitivity of fragility curves to site class, two sites on soft and stiff soil are taken into account. Two alternative site amplification functions known as generic and theoretical site amplifications are examined for these two sites. The reinforced concrete frames located on soft soil display larger fragilities than those on stiff soil. Theoretical site amplification mostly leads to larger fragilities than generic site amplification more evidently for reinforced concrete buildings. Additionally, structural variability of ESDOFs is generally observed to increase the fragility especially for rigid structural models.


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This study investigates the link between probabilistic seismic hazard assessment and corresponding loss estimations by using different ground-motion logic-tree frameworks from reliable large scale seismic hazard projects as well as the logic-tree framework established in this study. The predictive models selected for these logic trees are expected to represent the center, body and range of ground-motion intensity measure estimates. Regarding with the hazard component of risk assessment, the ground motion in...
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This study aims to evaluate the effect of horizontal irregularities and base isolation configuration on the seismic response of reinforced concrete base-isolated buildings. A set of structural models with varying re-entrant corner geometric properties has been utilized to make evaluations with respect to square-symmetric ordinary form. In addition to this set, alternative models with non-uniform mass distributions in the plan have also been employed to expand the building set. Elastic response spectrum-base...
An Investigation on the Use of Simulated Records in Derivation of Fragility Curves for RC Buildings in Duzce
Kadaş, Koray; Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Erberik, Murat Altuğ; Yakut, Ahmet (2017-10-11)
Probabilistic assessment of seismic damage for an individual building or a building stock in terms of fragility curves generally requires utilization of ground motion records either seismologically consistent with the probable hazard for the area studied or chosen arbitrarily without considering the seismological characteristics, but covering a range of intensity levels. In both alternatives, the analyst should select several records to be able to perform the probabilistic studies accurately. This condition...
An Interdisciplinary Approach for Regional Seismic Damage Estimation
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In order to mitigate seismic risk in urban regions, the first task is to identify potential seismic losses in future earthquakes. Seismic loss estimation is an interdisciplinary framework including a wide range of contributions from geophysical and earthquake engineers, physical and economic planners to insurance companies. In this study, a moderate size city in Turkey, namely Erzincan, is modeled completely from geophysical attributes to the built environment. Erzincan city is on the eastern part of the No...
The effects of compaction methods and mix parameters on the properties of roller compacted concrete mixtures
Şengün, E.; Alam, B.; Shabani, R.; Yaman, İsmail Özgür (2019-12-20)
Despite the wide use of RCC, there is no specific compaction methodology developed to simulate the site conditions in the laboratory. Yet, there are few compaction methods that are generally used to produce RCC specimens in the laboratory environment. The most common methods are the vibrating table and the vibrating hammer found in ASTM, and the modified proctor and Superpave gyratory compactor (SGC), which are suggested to be standardized. However, it is not well known how these different compaction techni...
Citation Formats
A. A. Sisi, M. A. Erberik, and A. Askan Gündoğan, “The effect of structural variability and local site conditions on building fragility functions,” EARTHQUAKES AND STRUCTURES, pp. 285–295, 2018, Accessed: 00, 2020. [Online]. Available: