A COMPARATIVE ANALYSIS OF TLCD EQUIPPED SHEAR BUILDINGS UNDER DYNAMIC LOADS

Mario Raul Freitas¹; Lineu José Pedroso¹

¹ Universidade de Brasília

doi:10.20906/CPS/CILAMCE2017-0164

Resumo

Brazilian cities are living a process of intense vertical growth due to the necessity of increasing the efficiency of use of the urban spaces. Tied to this necessity is the rapid development of new materials and technologies, especially when it comes to quality and resistance. These factors permitted the construction of slender buildings, which are susceptible to dynamic loads. This study targets the behavior of shear buildings equipped with tuned liquid column dampers (TLCD) which attenuates dynamic load induced vibration. Shear buildings are a frame model in which the horizontal elements are considered to be much stiffer than the vertical elements. This consideration allows us to neglect the rotational degrees of freedom in every story, making the analysis of the structure simpler. Furthermore, this model considers that the mass is lumped in the horizontal elements. TLCDs are a passive damping system used in tall buildings. This kind of damper has proven to be very efficient, being an excellent alternative to mass dampers. A linear dynamic analysis of the structure-damper system is made using the software DynaPy, developed in the research process. The software solves the equations of motion through numeric integration using the central differences method. Thus, the main objective is to compare the dynamic response of structures with and without TLCDs.

Palavras-chave: Damper; Structure Dynamics; DynaPy; Numeric Integration