Comparisons of Seismic Hazard Analysis Methods for Engineering Sites
In view of the existing various seismic hazard analysis methods,the seismic hazard analysis method based on historical seismic intensity data and the probabilistic seismic hazard analysis method to an-alyze the seismic hazards of the main urban area in Beijing was taken,and the peak ground acceleration with a probability of exceeding 10％in 50 years was obtained.The results showed that the peak ground ac-celeration of the main urban area in Beijing was of obvious spatial variability,which was gradually increas-ing from the west of the city to the east;the results obtained from those two methods were reliable and the differences were slight.The methods had their own characteristics,the former had fewer assumptions inclu-ding site effects and was moderately difficult to calculate,but the application range was limited;the latter was integrated influences of various factors,with multiple assumptions and high computational complexity,but be widely used.Those two methods could provide reference to seismic hazard assessment.
seismic hazard analysisseismic intensitypeak ground accelerationprobability of ex-ceedancespatial variability
NETL
NSTL
万方数据
