Abstract

TAPIA HERNANDEZ, Edgar  and  TENA COLUNGA, Arturo. Diseño sísmico de marcos de acero contraventeados: Parte 1: recomendaciones de diseño. Ing. sísm [online]. 2013, n.88, pp.43-68. ISSN 0185-092X.

In order to help improving the current knowledge for the seismic design of regular steel buildings structured with ductile moment - resisting concentrically braced frames (MRCBFs), a capacity design methodology adapted for the Mexican Federal District Code (MFDC-04) is presented. In the proposed methodology minimum requirements are established in order to insure collapse mechanisms consistent with the assumptions implicit in a code-based design (strong column, weak beam, and weaker brace), with a uniform distribution of yielding along the height and predictable load redistributions. Improved equations are proposed for a more realistic assessment of ductility and overstrength force modification factors for this structural system. In the paper, the proposed methodology is illustrated with the design of a 14-story building settled in soft soil conditions.

Keywords : ductile frames; concentric bracing; capacity design; ductility; overstrength factor; structural performance.

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