Análisis del desempeño estructural de la tipología edificios públicos con el uso de amortiguadores viscoelásticos

Abstract

In this current research the data-information was collected from 18 public building in the Highland Central Region of Ecuador, data such as number of stories, distances between columns and story heights. Using these obtained data, a standard structure that approximates to the characteristics of typology buildings was modeled. Based on specific foundations in the NEC-SE-DS, FEMA 356, FEMA 440 and ASCE 41-13 standards, the structural performance of the model was analyzed, so that it reaches the requirements of a special structure, by using the ETABS software. The linear analysis, the non-linear static analysis, and the non-linear dynamic analysis were performed. For the Non-linear Dynamic Procedures (Time-History) three acelerograms were taken into account: Norcia (Italy), Northridge (USA), and San Fernando (USA). Later in the same model structure, viscoelastic dampers were incorporated by means of the “Link” element available in ETABS software, to probe that dampers the improve the structural performance, as well they decrease the displacements and story drifts of the structure. The results obtained by means of the nonlinear procedures are compared, both the pushover and the time – history analysis of various parameters such as displacements, story deformations and story drifts. At the end of the research, it is concluded that the viscoelastic dampers greatly help the structural performance for regular structures and reduces the displacements and story drifts.