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Ingeniería sísmica

Print version ISSN 0185-092X

Abstract

VALDES GONZALEZ, Jesús  and  ORDAZ SCHROEDER, Mario. Análisis de efectos sísmicos ortogonales horizontales en terreno blando. Ing. sísm [online]. 2008, n.79, pp.91-111. ISSN 0185-092X.

This work studies the problem that represents the combination of the seismic effects on structures caused by the action of two horizontal orthogonal components of the ground motion. By using random vibrations some analytical expressions were developed to combine the two horizontal orthogonal seismic effects in order to estimate the elastic bi-directional peak response. The main hypothesis made in the development of these expressions was to represent the Fourier's spectrum for the two orthogonal components of the ground motion by a Dirac's delta. Through the fully bi-directional elastic "step by step" analysis of some structural models, it is verified the accuracy of the proposed method. The exposed procedure is exclusively applicable to soft soil. It considers explicitly the angle of earthquake incidence and the kind of response in terms of the direction of its components (orthogonal or collinear).

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