Revista IBRACON de Estruturas e Materiais (Jan 2023)

Influence of shear walls on the structural behavior of a multi-storey concrete building according to Brazilian Technical Code ABNT NBR 15421:2006

  • Carlos Alexandre Seruti,
  • Eduardo Fernandes Lima,
  • Silvio de Souza Lima,
  • Sergio Hampshire de Carvalho Santos

DOI
https://doi.org/10.1590/s1983-41952023000500004
Journal volume & issue
Vol. 16, no. 5

Abstract

Read online

abstract: This paper presents a comparative study of the influence of shear walls on the behavior of a multi-storey concrete building when subjected to seismic actions. Two structures with different earthquake-resistant systems were evaluated. One is composed of concrete frames with usual detailing in both directions (x and y), and the other one is formed by a dual system, composed of frames and shear walls with usual detailing. The Equivalent Lateral Force procedure and the Modal Response Spectrum analysis presented by the Brazilian Technical Code ABNT NBR 15421:2006 were considered. The dual system building presented a greater stiffness with the shear walls arranged parallel to direction y. In the x direction, the responses are equivalent in both buildings. The horizontal forces obtained by the Equivalent Lateral Force method at the base of the buildings were greater than the Modal Response Spectrum method.

Keywords