Propuesta para obtener las máximas aceleraciones de piso usando la norma sísmica peruana e.030

Abstract

The collapse of some floor diaphragms during earthquakes was due to failures in connection with vertical elements or because those were not designed for seismic forces in its plane. This has made that the design of diaphragms is an issue that has been incorporated in many seismic codes. For its design, it is necessary the maximum acceleration on each floor during a strong seismic event. The seismic Peruvian code E.030 does not include any methodology about how to calculate those accelerations floor, it only refers to acceleration on floors but due to maximum base shear which does not correspond to maximum acceleration in each level.
 In this paper, a simplified procedure for obtaining maximum floor accelerations is shown. This procedure is based on First Mode Reduced method [1] to which a factor rW was included to consider higher modes participation in dual systems (frames / walls). The rW factor corresponds to the ratio of base moment in walls and base moment in the building. In the validation of the procedure, it was observed that the proposed procedure agrees with the results of experimental and analytical models.