Metodología de ubicación de un dispositivo de control semi-activo en pórticos planos sometidos a cargas sísmicas, con fines de reforzamiento

Resumen

This paper presents a methodology for optimal location of friction dampers in civil structures. The proposed methodology involves a metaheuristic optimization technique called particle swarm optimization Algorithm. The use of semi-active control devices to protect building from the occurrence of earthquakes have received focused attention in the last decades as these systems combine characteristics from passive and active control devices. The determination of the optimal parameters of a semi-active system, including the number and position of the devices, depends on the characteristics of the protection system, the main structural configuration and the seismic hazard. This research deals with the assessment of the influence in the seismic response of shear buildings frames of equipping it with proposed friction-type semi-active dampers. The device is of variable damping, which has a passive reaction while the ranges of displacements do not exceed the imposed limit to generate the operation of the active part of the device. The active part has a function is used that allows to generate different frictional forces in the device that depend on the displacements of the structure due to the earthquake. The function has a minimum and maximum force that is exclusive of the capacity of the friction device. The assessment criteria correspond to the number, position and properties of the devices. The proposed method finds the best stories to locate the dampers with optimal mechanical parameters. The objective function used in this study is to minimize the maximum inter-story drift of the structures. The state space formulation for a shear-building configuration including semi-active dampers is reported and implemented in Matlab.

Fecha de lectura	oct. 2019
Idioma original	Español
Institución de lectura	Pontificia Universidad Javeriana