Urban Area Microzonation as Prevention in Mаnaging Earthquake Risk

Stamatovska Gj. Snezana

《Frontiers in Geotechnical Engineering》 1卷1期 (2012/12) Pp. 9-18

並列摘要

Earthquake risk management represents a preventive measure the protection against earthquakes. To manage earthquake risk, it is necessary to perform seismic microzoning of urban areas threatened by catastrophic earthquakes, i.e. create hazard maps of distribution of peak ground acceleration upon the free surface, fundamental periods in elastic and plastic range of vibration of the soil deposit, and spectral amplitudes upon the free surface. For their elaboration, it is necessary to compute the uniform hazard at bedrock and the dynamic response of the soil deposit in the terrain of the urban city area. The uniform hazard is established for different probability definitions of seismic action as recommended by national or international regulations for seismic design according to types of structures. Presented as an example in this paper is the seismic microzoning of the urban area of the Skopje city (UPS) for the seismic action with a probability of exceedence of 10% for a time period of 50 years (annual probability of exceedence of 0.0021, or a referent return period of 475 years).

並列關鍵字

Seismic Zoning ； Seismic Hazard ； Amplification ； Fundamental Period