OPTIMIZATION OF COUPLING BEAMS ON E4 SYSTEMS OF REINFORCED CONCRETE ACCORDING TO AGIES NSE 2018 AND ACI 318-19, FOR THE REDUCTION OF SEISMIC VULNERABILITY, THROUGH A NON-LINEAR DYNAMIC ANALYSIS.

Abstract

In construction practice, very few structural designers currently make
use of coupling beams for the construction of tall buildings, due to the
architectural limitations with respect to the mezzanine height and useful height
since they have ratio restrictions that generally architecture does not accept as
a parameter of structural elements. The detailed correctness of a coupling
beam must comply with several conditions that the ACI code 318 establishes,
overcoming these limitations, if everything was done correctly the coupling
beams offer a reduction of about 50% of the maximum allowed lateral drift
compared to the use of beams governed by flexed behavior as will be seen in
the present study. The research proposal is focused on making use of dynamic
nonlinear structural analysis, the amount of energy absorbed in the coupled
dual structural system and each coupling beam must be quantified to know
what dimensions optimize the building beams of 20 level building proposed in
this investigation, previously designed with ACI Code 318-19, which allows the
use of high strength steels up to grade 100 in longitudinal and diagonal
reinforcement, reducing the seismic vulnerability of the structure by having a
correct seismic-resistant performance.