Abstract:

The earthquake hazard maps, which are the basis for the calculation of the earthquake loads affecting the structures, have undergone various changes from 1945 to today as a result of the developments in the methods related to earthquake hazard calculations, in the databases related to earthquake sources and in the fields of earthquake forecast equations. The spectral values in the short period and 1.0 s period areas calculated in accordance with the Turkish Building Earthquake Regulations, which is updated parallel to these developments, are varied according to the Regulations on Buildings in the previous Earthquake Areas. In this study, the calculation steps of both regulations and the spectral values obtained in the center of 81 provinces are compared in detail, the calculated data are presented visually by processing in the map of Turkey. The design spectral values calculated according to the Building Earthquake Regulation in Turkey have increased in many districts, especially in weak soils, compared to the values calculated according to the Regulation on Buildings in Non-Governmental Earthquake Areas.

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