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Ingeniería sísmica

versão impressa ISSN 0185-092X


FERNANDEZ SOLA, Luciano Roberto; TAPIA HERNANDEZ, Edgar  e  DAVALOS CHAVEZ, David. Inelastic response of steel frames with inertial soil structure interaction. Ing. sísm [online]. 2015, n.92, pp.1-21. ISSN 0185-092X.

In this paper, results of nonlinear pushover analyses of steel frames of regular buildings are discussed in order to evaluate the influence of Dynamic Soil - Structure Interaction in their inelastic response. The studied frames are part of regular steel buildings of 8-, 12- and 16-stories, which were designed for soft soil conditions of Mexico City. Different lateral stiffness (two braced bays, one braced bay and no braces) and foundation's flexibility (rigid base, piles and mat foundation) were studied. Soil-foundation flexibility is introduced by a set of springs in the base, where their constants are equivalent to the values of the impedance functions at fundamental frequencies of each building. The paper compares the ductility developed by the frames with flexible base against the developed by the frames with rigid base and the proposed methodology of specialized codes.

Palavras-chave : steel frames; ductility; overstrength; structural performance..

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