Reducción de aceleraciones en edificios esbeltos sometidos a cargas de viento mediante disipadores y amortiguadores de masa sintonizada

Abstract

During wind events, tall buildings can exhibit levels of floor acceleration that compromise occupant comfort. The use of energy dissipating devices to reduce peak accelerations is a sound strategy to improve building performance. This article describes a procedure for estimating the average peak floor acceleration of buildings subjected to forces acting in the wind direction. Wind loads on the structure are modeled as random processes with height-dependent spatial correlation using power spectral models of longitudinal turbulence. A design procedure for linear viscous dampers and tuned mass dampers is developed that allows the estimation of critical damping ratio increments of the poles of the model with non-classical damping. The mean maximum acceleration values ​​are estimated as a function of the parameters of the dissipators and of the tuned mass dampers in order to obtain suitable design parameters for improving the comfort of the occupants in annual recurrence storms.