Accelerograms For Building Design For Hard Soil
In Mexico City
Author(s)
M. A. Jaimes Téllez, E. Reinoso Angulo & M. Ordaz Schroeder
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.
Keywords: subduction, intermediate depth, Mexico City, simulation, strong
ground motion, design accelerograms.
1 Introduction
In some cases, especially when it is necessary to evaluate the response in the
inelastic range of important structures, it is not enough to define the seismic
motions by means of a design spectrum. This considers forces related to
parameters of maximum response like the spectral acceleration that does not
always have a direct correlation with the loss and damage, besides not including
the accumulated damage or degradation produced by the hysteretic behavior due
to severe seismic events during the useful life of the structure. That is why
accelerograms are used in the design of important structures, for example, to
evaluate complex structures as such dams, bridges, tall buildings with irregular
plant or elevation; structures where higher modes of vibration could be important
or structures designed to have high demands of ductility. These accelerograms
Keywords
subduction, intermediate depth, Mexico City, simulation, strong
ground motion, design accelerograms.
Related Book
Other papers in this volume
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