Evaluation of parameters affecting earthquake damage by decision tree techniques |
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Authors: | Betül Şengezer Atilla Ansal Ömer Bilen |
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Institution: | 1.Faculty of Architecture, City and Regional Planning,Y?ld?z Technical University,Istanbul,Turkey;2.Kandilli Observatory and Earthquake Research Institute,Bo?azi?i University,Istanbul,Turkey;3.Faculty of Arts & Sciences, Statistics,Y?ld?z Technical University,Istanbul,Turkey |
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Abstract: | Earthquake damages are assessed based on a holistic approach using structural as well as non-structural factors to model earthquake
damage distributions with Decision Tree Techniques, using the Answer Tree program and the damage data from recent major earthquakes
in Turkey. The damage dataset consists of approximately 9,400 buildings that were surveyed to evaluate the factors affecting
building damage after Erzincan 1992], Dinar 1995], and Kocaeli 1999] earthquakes. The earthquake damage is defined as the
dependent variable, while earthquake magnitude (M), intensity (I) in the city, peak ground acceleration (PGA) in each city,
epicenter distance (ED), building types (BT), number of storeys (NS), presence of soft storey (SS), building position (BP)
on the site, and site conditions (SC) are independent variables in the proposed model. The damage level (DL) was classified
with respect to red, yellow, and green codes. The main purpose was (1) to identify the factors controlling building damage
during earthquakes; (b) to determine the most significant factor; (c) to evaluate the effects of different factors for different
earthquakes; (d) to develop damage distribution models for different subgroups based on the Decision Tree Techniques.
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Keywords: | Earthquake Parameters effecting earthquake damage Vulnerability |
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