Influencia de la Interacción Dinámica Suelo-Estructura en pórticos de concreto con disipadores viscosos incorporados

Resumen

Essential facilities, such as hospitals, communication systems, highways, bridges, among others, play a significant role in a community. These facilities are vital, especially after the occurrence of a natural hazard. They must remain functional after a significant event to provide essential services to the community. In Colombia, a significant part of the population live in a medium or high seismic hazard zone. Therefore, earthquakes are the events for which the greatest preparation must be made. The implementation of control systems during the structural design and rehabilitation stages enables an attractive manner for this type of structure to dissipate the dynamic response under major disturbance events. Under seismic events, the structure's response can be altered by the interaction between the structure and the soil underneath. In this thesis, the influence on the dynamic response is evaluated through numerical simulation by including the effects of soil-structure interaction in a reinforced concrete moment resistant frame with viscous fluid-type energy dissipation systems. For this analysis, seven ground motion records were selected for the analysis, considering their frequency content and source. These records are matched to the corresponding building codes design response spectrums considering areas prone to high seismicity. Similarly, the soil profiles used for the analysis correlates with the same seismic hazard zone. The analyzed structures correspond to essential facilities of high importance modeled as a two-dimensional reinforced concrete moment resistant frame. The analysis is performed on four different frame buildings with different number of bays and stories implementing viscous dampers. Two cases are studied: implementing and neglecting the effects of the soil-structure interaction (SSI). The results for the case-study show a significant increase in the dynamic response in terms of displacement, inter-story drift, and base shear when considering SSI.

Fecha de lectura	nov. 2020
Idioma original	Español
Institución de lectura	Pontificia Universidad Javeriana