In this paper,the basic principles of seismic risk analysis are firstly introduced,and then,the concept of global seismic fragility of structures is put forward. To overcome the problems in the traditional methods,a new method for global seismic fragility analysis of structures is proposed by combing the methodologies of structural reliability with the theory of performance-based seismic design,the seismic fragility of structures is computed by way of the finite element reliability methods.
Through the seismic risk analysis for Shanghai and its neighboring area, and based on the specific requirements on the protection of cultural relics against earthquake in Shanghai Museum, the earthquake fortification level and ground motion parameter are studied and determined.
The general trend of the amplifications at the lowest frequencies is well determined by the 2-D numerical modelling, and can therefore supply information for seismic risk analysis.
A formulation, similar to the procedure employed in seismic risk analysis, has allowed us to quantify probabilities concerning repeated long episodes of dry days for an arbitrary number of years and their return periods.
This part of our study, which can be read independently from Part I, concentrates on the probabilistic seismic risk analysis (PSRA) forTulbagh.
Seismotectonic regionalization of the Red Sea area and its application to seismic risk analysis
An example problem, in seismic risk analysis, solved with software based on this design is described.