Accelerograms For Building Design For Hard SoilIn Mexico City

Abstract

A method of disaggregation probabilistic seismic hazard assessment is applied to determine the most probable magnitude, M, and distance, R, of certain seismic events that can generate a fixed seismic intensity (spectral ordinate) associated to an exceedance rate for hard soil in Mexico City. The main seismic sources which affect the firm land structures are determined. In addition, the following criteria are used: i) to establish in which structural periods the spectral ordinates should be used so that the response of the expected motion does not exceed the uniform hazard spectra and ii) to find the minimum number of design strong ground motions that must be considered to include spectral ordinates of uniform hazard spectra.