Evaluation of parameters affecting earthquake damage by decision tree techniques

Şengezer, Betül; Ansal, Atilla; Bilen, Ömer

doi:10.1007/s11069-008-9238-2

Cited by 9 publications

(4 citation statements)

References 22 publications

(21 reference statements)

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“…The buildings were compiled from the reconnaissance surveys by the authors after the 2011 Van Earthquake, the Middle East Technical University SERU Afyon Earthquake Database (SERU 2012), the AIJ/JSCE/JGS (2001) Report on 1999 Kocaeli Earthquake, and the thesis by Kırçıl (1998) on the 1995 Dinar Earthquake. Some of the main characteristics of the earthquakes are summarized in Table 12 (AIJ/JSCE/JGS 2001; Kırçıl 1998;Sengezer et al 2008;Tapan et al 2013;Erdik et al 2002).…”

Section: Comparison Of Pera Methods Results With the Tsdc Predictionsmentioning

confidence: 99%

Performance Based Rapid Seismic Assessment Method (PERA) for Reinforced Concrete Frame Buildings

İlki

Cömert

Demir

et al. 2014

Advances in Structural Engineering

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Recent destructive earthquakes have shown that many existing buildings, particularly in developing countries, are not safe against seismic actions. Since code-based seismic safety evaluation methods generally require detailed and complex structural analysis, the necessity for simplified, yet sufficiently accurate evaluation methods emerges for reducing cost and duration of assessment procedures. In this study, a performance based rapid seismic safety assessment method (PERA) is proposed for reinforced concrete buildings. The overall structural performance is determined based on the demand/capacity ratios of individual columns, as well as their failure modes (brittle/ductile), confinement characteristics, and levels of axial and shear stresses. The lateral drift of the critical story, calculated through a simplified approach, is also taken into account during determination of the global structural performance. The predictions of this method are compared with the results of conventional detailed seismic safety assessment analyses carried out for 672 different cases representing typical reinforced concrete frame buildings in Turkey. Good agreement is obtained between the predictions of the proposed algorithm and code-based structural performance assessment procedures. Finally, predictions of the proposed approach are compared with actual damages observed in 21 existing buildings in Turkey after destructive earthquakes that have occurred during the last two decades. These comparisons also point to an acceptable level of accuracy and sufficient conservatism for the methodology proposed.

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Section: Comparison Of Pera Methods Results With the Tsdc Predictionsmentioning

confidence: 99%

Performance Based Rapid Seismic Assessment Method (PERA) for Reinforced Concrete Frame Buildings

İlki

Cömert

Demir

et al. 2014

Advances in Structural Engineering

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“…Finally, earthquake loss can be estimated using an integration of hazard and vulnerability maps (e.g. Sengezer et al 2008 andPloeger et al 2010). Figures 11 and 12 illustrate the distribution of the natural site period and dynamic (non-linear) site period, respectively, throughout Tehran.…”

Section: Selecting Strong Motionsmentioning

confidence: 99%

Ground motion studies for microzonation in Iran

et al. 2011

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An important step in effectively reducing seismic risk and the vulnerability of a city located in an earthquake prone area is to conduct a ground motion microzonation study for the desired return period. The International Institute of Earthquake Engineering and Seismology (IIEES) initiated a number of seismic microzonation projects for Iran. This paper presents the steps followed by IIEES in ground motion microzonation. IIEES performs both probabilistic and deterministic seismic hazard analysis. IIEES uses his own fault map for seismotectonic studies and develops modulus and damping curves for the soils in the study area. The experience of ground motion microzonation shows that in almost all cases, the estimated 475-year peak ground acceleration (PGA) values are higher than the PGA proposed by the Iranian seismic code. Although ground motion microzonation in Iran has some shortcomings, IIEES is making new improvement. This includes development in deterministic seismic hazard analysis, two-dimensional and threedimensional modelling of basin and topographical effects, using microtremor measurements to find shear-wave velocity profiles in high-density urban areas and providing maps for spectral acceleration in the study area.

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“…Tree-based machine learning methodologies have mainly been applied in seismic vulnerability studies for parameter evaluation [45][46][47]. For other natural disasters, these methodologies have also been used to determine the relative influence of seismic parameters on the model results.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Assessment and Mapping of Gyeongju, South Korea Using Frequency Ratio, Decision Tree, and Random Forest

et al. 2020

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The main purpose of this study was to compare the prediction accuracies of various seismic vulnerability assessment and mapping methods. We applied the frequency ratio (FR), decision tree (DT), and random forest (RF) methods to seismic data for Gyeongju, South Korea. A magnitude 5.8 earthquake occurred in Gyeongju on 12 September 2016. Buildings damaged during the earthquake were used as dependent variables, and 18 sub-indicators related to seismic vulnerability were used as independent variables. Seismic data were used to construct a model for each method, and the models’ results and prediction accuracies were validated using receiver operating characteristic (ROC) curves. The success rates of the FR, DT, and RF models were 0.661, 0.899, and 1.000, and their prediction rates were 0.655, 0.851, and 0.949, respectively. The importance of each indicator was determined, and the peak ground acceleration (PGA) and distance to epicenter were found to have the greatest impact on seismic vulnerability in the DT and RF models. The constructed models were applied to all buildings in Gyeongju to derive prediction values, which were then normalized to between 0 and 1, and then divided into five classes at equal intervals to create seismic vulnerability maps. An analysis of the class distribution of building damage in each of the 23 administrative districts showed that district 15 (Wolseong) was the most vulnerable area and districts 2 (Gangdong), 18 (Yangbuk), and 23 (Yangnam) were the safest areas.

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Evaluation of parameters affecting earthquake damage by decision tree techniques

Cited by 9 publications

References 22 publications

Performance Based Rapid Seismic Assessment Method (PERA) for Reinforced Concrete Frame Buildings

Performance Based Rapid Seismic Assessment Method (PERA) for Reinforced Concrete Frame Buildings

Ground motion studies for microzonation in Iran

Seismic Vulnerability Assessment and Mapping of Gyeongju, South Korea Using Frequency Ratio, Decision Tree, and Random Forest

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