A influência das ações horizontais na análise da estabilidade global em edifícios em concreto armado

Abstract

With the growth of large urban centers and technological advances in civil construction, the need arises to build ever higher buildings, to meet the demand of the population concentrated in small areas. In these buildings, the horizontal actions become more relevant on the structural project. These actions influence the building's global stability, which may cause increase in the shear forces, which, if not foreseen, may compromise the structure security. In this way take into account all structural strain in a building becomes essential. The objective of the study is analyze the horizontal actions effects on the global stability of reinforced concrete building. The development of this work, with the aid of CAD/TQS® systems, was organized in three phases: the superstructure project of a building in reinforced concrete; development of infrastructure project and connection elements; integration of the infrastructure to the superstructure; and analysis of global stability coefficients. It was verified the obligation requirement of the second order effects because the coefficient FAVt exceeded the limit value of 1.10, classifying a structure in mobile nodes.