Análisis del efecto hidrodinámico de líquidos en movimiento aplicado a edificios con piscinas en azoteas sometidos a sismos intensos

Abstract

In the present research work three-dimensional mathematical models based on finite elements of a regular 12 level arched building in reinforced concrete were constructed, considering the hydrodynamic effects and not including them, for comparative purposes. The hydrostatic and hydrodynamic loads were established according to the ACI 350.3-06 Standard based on the model developed by Newmark - Rosenblueth. In defining the seismic demand, the design spectrum of the NEC-SE-DS 2015 and 3 pairs of accelerograms duly selected, scaled and adjusted to the design spectrum were used. The comparative study is carried out by applying linear elastic analysis of equivalent lateral force (FLE) and modal-spectral, as well as the dynamic response of the models is evaluated by applying Nonlinear Response History Analysis (NLRHA). The results obtained show that when incorporating the hydrodynamic effect in the models, considerable variations are observed in the modal parameters such as periods. Additionally, there is an increase in forces, displacements, velocity and accelerations; as well as a greater degree of damage and the number of structural elements that enter inelastically.