A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract Earthquake activity and seismic hazard analysis are important components of the seismic aspects for very essential structures such as major dams and nuclear power plants. Setting of nuclear power plants becomes of increasing important in northern Egypt with the commitment towards promoting nuclear electric generation. Therefore, the annual seismic hazard maps with non-exceedence probability of 80%, 85% and 90% are given. These maps show that northern Egypt is severely affected by earthquakes from potential sources around Sinai peninsula. Three sites (Nile Delta, Cairo, and Ismailia region) have been chosen to estimate the earthquake hazard in more detailes to serve as a basic parameter to the safety factor of different projects in these regions. At each region six intensity levels have been examined. The annual expected number of earthquakes (N), the return periods (T), and the probability of occurrence (R) for each intensity level are given. These results indicate that the return period of an intensity VII in Nile Delta and Cairo regions is about 20 years with probability of 0.05%, while at Ismailia region is 10 years with 9% probability of occurrence. A seismic safety factor of intensity 8.5 should be considered in designing the vital projects in northern Egypt. On basis of the Trifunac and Brady (1975) formula, this earthquake intensity will generate seismic waves with vertical acceleration of 0.21g, and horizontal acceleration of 0.25g
Abstract Earthquake activity and seismic hazard analysis are important components of the seismic aspects for very essential structures such as major dams and nuclear power plants. Setting of nuclear power plants becomes of increasing important in northern Egypt with the commitment towards promoting nuclear electric generation. Therefore, the annual seismic hazard maps with non-exceedence probability of 80%, 85% and 90% are given. These maps show that northern Egypt is severely affected by earthquakes from potential sources around Sinai peninsula. Three sites (Nile Delta, Cairo, and Ismailia region) have been chosen to estimate the earthquake hazard in more detailes to serve as a basic parameter to the safety factor of different projects in these regions. At each region six intensity levels have been examined. The annual expected number of earthquakes (N), the return periods (T), and the probability of occurrence (R) for each intensity level are given. These results indicate that the return period of an intensity VII in Nile Delta and Cairo regions is about 20 years with probability of 0.05%, while at Ismailia region is 10 years with 9% probability of occurrence. A seismic safety factor of intensity 8.5 should be considered in designing the vital projects in northern Egypt. On basis of the Trifunac and Brady (1975) formula, this earthquake intensity will generate seismic waves with vertical acceleration of 0.21g, and horizontal acceleration of 0.25g
Earthquake Hazard Analysis in Northern Egypt
Badawy, A. (author)
1998
Article (Journal)
English
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