Abstract
Abstract. Istanbul city has experienced many strong earthquakes throughout its history and suffered extensive damage. The old Istanbul (Fatih and Eminonu districts), one of the most densely populated locations of Istanbul city, is a commercial centre and has many significant historical buildings. In this study, the data pertaining to the damage sustained by historical artifacts and structures from past earthquakes, are examined along with the soil amplification of the region, the liquefaction and slope stability risk in relation to the seismic microzonation maps which were prepared using geographic information system techniques. The relationship between soil behaviour and the damage resulting from previous earthquakes. The structural damage observed in the region was in accordance with the microzonation maps. Since the area does not have a high risk in terms of slope stability, this does not have much impact on the level of damage. However, it was found that soil amplification and partial liquefaction contributed to the damage to historical artifacts and structures.
Highlights
It is known that the extent of the damage to buildings caused by earthquakes is related to local soil conditions
The possible changes that can occur following an earthquake were analysed in a selected study area and the results presented with micro-zoning maps
We examined the data pertaining to the damage sustained by historical artifacts and structures from past earthquakes, the soil amplification of the region, assessed the liquefaction and slope stability risk in relation to the seismic microzonation maps and investigated the relationship between soil behaviour and damage resulting from previous earthquakes
Summary
It is known that the extent of the damage to buildings caused by earthquakes is related to local soil conditions. The possible changes (in terms of soil amplification, soil liquefaction, slope stability) that can occur following an earthquake were analysed in a selected study area and the results presented with micro-zoning maps. We examined the data pertaining to the damage sustained by historical artifacts and structures from past earthquakes, the soil amplification of the region, assessed the liquefaction and slope stability risk in relation to the seismic microzonation maps and investigated the relationship between soil behaviour and damage resulting from previous earthquakes. Seismic microzonation studies generally involve the follow- pageorgiou et al, 2000) was used This programme is capaing three stages: assessment of seismicity and regional seis- ble of producing spectrum compatible earthquake time hismic hazard, identification of geological structure and fault tories. The microzonation map regarding the liquefaction potential was based on the assessment of liquefaction potential according to the simplified procedure recommended by Seed et al (1984, 1985) for the coast lines of the Golden Horn, Yenikap and Kumkap and along Vatan street (see Fig. 6) where liquefaction is thought likely to occur due to the characteristics of the soil layers
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