Obtaining floor response spectra in a reinforced concrete building implemented with viscous damper: application to the seismic analysis of a storage tank

De la Cruz Sanchez M.R.; Calla M.L.; Espinoza V.T. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2023)

Resumen

Faced with a seismic event, structural and nonstructural elements (ENE) are prone to damage that destroys them, totally or partially. For this reason, its protection is essential, even more so, in buildings destined for health centers, which are the refuge and first place of aid in the event of a catastrophic event, such as earthquakes. Therefore, the use of protective systems such as fluid viscous dampers (FVD) is a good option for seismic energy dissipation and performance improvement. Even so, ENE such as storage tanks, partitions, low ceilings, and hanging pipes, require an anchoring system that allows them to remain stable and not be a danger. For this reason, in this article, an eight-level reinforced concrete structure implemented with an additional dissipation system employing fluid-viscous dampers is analyzed and its ability to reduce displacements and accelerations during telluric activities is analyzed, the main objective is to raise the construction of floor spectra, which are obtained after calculating the response histories of each level through an FNA response history analysis. The application of the floor spectra is done using a spectral response analysis to obtain the anchoring forces in a storage tank. In this work, the effect of the stiffness of the liquid in the tank is not considered. The analyzes carried out in the building show a maximum decrease in accelerations, on the eighth floor, by 78% in the X and Y axes, after adding the FVDs. On the other hand, it was evident that the anchoring forces required by the storage tanks increase the higher the floor level. Likewise, on the X-axis, the maximum decrease in anchoring forces was 62%, corresponding to the tank located on the roof. While on the Y axis, also on the roof, the greatest reduction in the anchoring force is achieved; this reduction occurred in 63.1%. In both instances, the use of the FVD system reduced forces.

Instituciones: Universidad Peruana de Ciencias Aplicadas