Evaluación del desempeño sísmico de edificaciones compuestas de marcos rígidos de acero en zonas hondureñas de alto peligro sísmico

The Honduran Construction Code (CHOC) prescribes a seismic design methodology for steel moment frames which produces uncertain results. CHOC also allows designs of ordinary steel moment frames (OMF) in regions of high seismic hazard which compromise the required seismic performance of such structures. The seismic performance of three fivestory buildings is evaluated in the Honduran urban area of greatest seismic hazard using FEMA 440 and FEMA 356. Two buildings consist of OMF; one of them with the lightest shapes available, the other, a non-ductile design allowed by the CHOC. The third, with special steel moment frames with the lightest shapes available. The designs were by the UBC 97 and the AISC 2010. It was verified by nonlinear static and dynamic analyzes that the CHOC could eventually lead to the design of steel moment frames with unacceptable seismic performance, in accordance with criteria of UBC 97 and AISC 2010.