Principal Results Of The Inelastic Seismic
Performance Of A 17-story RC Building Located
In The Soft-soil Area In Mexico City With
Normal-strength Concrete And With
High-strength Concrete
Author(s)
J. A. Avila
Abstract
The principal responses of the inelastic seismic performance of a 17-story
reinforced concrete building located in the soft-soil of Mexico City, with normalstrength
concrete (f´c= 250 kg/cm2) and with high-strength concrete (f´c= 700
kg/cm2), are analyzed. The designs are made according to the 2004 Mexico City
Building Code, RDF-04. The design results are compared, after making spectral
modal dynamic analysis, as well as the non-linear responses from the step-bystep
dynamic analysis with the SCT-EW record of the 1985 earthquakes. Use of
high-strength concretes (f´c > 400 kg/cm2) in reinforced concrete columns
improves a great deal its axial load strength, and, therefore, in front of actions
where compression high loads predominate, its performance is very adequate. In
every analyzed case, reviewing the shear forces, the corresponding strength is
never reached; that is, there is always a reserve strength, which is larger in highstrength
concrete buildings; for this case a bigger quantity of transverse
reinforcement by confinement was required because the design conditions for
transverse reinforcement must be more demanding as the f´c value increases.
1 Introduction
In this paper the principal results are resumed that show the most important
aspects of the inelastic seismic performance of a 17-story RC building; it is
designed with normal-strength concrete and high-strength concrete, according to
the Concrete Norms of the 2004 Mexico City Building Code, RDF-04 [1]. The
Keywords
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