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Ingeniería sísmica

versión impresa ISSN 0185-092X

Resumen

TAPIA HERNANDEZ, Edgar  y  TENA COLUNGA, Arturo. Factores de ductilidad y sobrerresistencia en marcos de acero con contraventeo Chevrón. Ing. sísm [online]. 2011, n.84, pp.47-68. ISSN 0185-092X.

Results related to the assessment of force modification factors obtained with pushover analyses of 13 regular steel buildings structured with ductile moment - resisting concentrically braced frames with chevron configuration are summarized in this paper. Four-story to 16-story models were designed for the maximum seismic response modification factor (Q=3) allowed in Mexico's Federal District Code. Different balances between the story shear resisted by the columns with respect to the one resisted by the bracing system were considered. Improved equations were obtained for a more realistic assessment for the ductility and overstrength force modification factors.

Palabras llave : ductile braced frames; chevron bracing; capacity design; design drifts; overstrength factor; structural performance.

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