A STUDY TO DETERMINE THE QUALITY OF BUILDING STOCK AND EARTHQUAKE RISK IN KIRSEHIR

Abstract

Technological developments, findings, and associated improvement of structural codes together with the change in the earthquake potentials and deficiencies of the old buildings necessitate the evaluation of the present building stocks.  Both the Earthquake Regulations and the Seismic Zoning Map in Turkey have been going through a fast change in the recent years. Furthermore, the fact that the structural damage due to the recent earthquakes did not change according to the regions which is indicative of the building stock with low structural quality. Kirsehir is one of these regions with low quality buliding stock. Kirsehir is a developing region in relation to the increase in population and number of buildings in recent years. Accordingly, the heights of the buildings also increase in relation to the improving economical conditions. In contrary to the older masonry buildings of 1950s, the newer buildings are manufacturing using reinforced concrete. However, the lack of control mechanisms, designs according to lower eqarthquake risks without considering the the soil- structure relationship also make the more recent buildings prone to earthquake damage. In this study, the building stock in Kirsehir and its close surroundings (constructed before 1998) was considered and grouped in relation to their floor numbers, construction methods and some other properties. The performance analyses of the considered buildings were performed by taking into account the local soil conditions and construction material. Then, the earthquake risks of these buildings are calculated.

Keywords: Performance based analyse, Earthquake risk, Structrual damage length; topography.