Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients

This paper presents an alternative to estimate the magnifier of first order moments to be applied on each storey of reinforced concrete structures, from the values obtained for the γz and B2 coefficients, used to evaluate second order effects in reinforced concrete structures and in steel structures...

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Main Authors: D. M. Oliveira, N. A. Silva, P. M. Oliveira, C. C. Ribeiro
Format: Article
Language:English
Published: Instituto Brasileiro do Concreto (IBRACON)
Series:Revista IBRACON de Estruturas e Materiais
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952014000300002&lng=en&tlng=en
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author D. M. Oliveira
N. A. Silva
P. M. Oliveira
C. C. Ribeiro
author_facet D. M. Oliveira
N. A. Silva
P. M. Oliveira
C. C. Ribeiro
author_sort D. M. Oliveira
collection DOAJ
description This paper presents an alternative to estimate the magnifier of first order moments to be applied on each storey of reinforced concrete structures, from the values obtained for the γz and B2 coefficients, used to evaluate second order effects in reinforced concrete structures and in steel structures, respectively. In order to develop the study, initially several reinforced concrete buildings of medium height are processed, in first order and in second order, using the ANSYS software. Next, γz, B2 and the increase in first order moments, when considering the second order effects along the height of the buildings, are calculated. Finally, from the results obtained, the magnifier of the first order moments, differentiated for each storey of the structure and calculated from both γz and B2 coefficients, is estimated and the efficiency of the simplified method of obtaining final moments using the magnifier proposed is evaluated.
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spelling doaj.art-4b503e31a2854c31a8ae958580539baf2022-12-21T18:59:28ZengInstituto Brasileiro do Concreto (IBRACON)Revista IBRACON de Estruturas e Materiais1983-41957332934810.1590/S1983-41952014000300002S1983-41952014000300002Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficientsD. M. Oliveira0N. A. Silva1P. M. Oliveira2C. C. Ribeiro3Universidade Federal de Minas GeraisUniversidade Federal de Minas GeraisUniversidade Federal de Minas GeraisUniversidade Federal de Minas GeraisThis paper presents an alternative to estimate the magnifier of first order moments to be applied on each storey of reinforced concrete structures, from the values obtained for the γz and B2 coefficients, used to evaluate second order effects in reinforced concrete structures and in steel structures, respectively. In order to develop the study, initially several reinforced concrete buildings of medium height are processed, in first order and in second order, using the ANSYS software. Next, γz, B2 and the increase in first order moments, when considering the second order effects along the height of the buildings, are calculated. Finally, from the results obtained, the magnifier of the first order moments, differentiated for each storey of the structure and calculated from both γz and B2 coefficients, is estimated and the efficiency of the simplified method of obtaining final moments using the magnifier proposed is evaluated.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952014000300002&lng=en&tlng=enreinforced concretesecond order effectsγz coefficientB2 coefficient
spellingShingle D. M. Oliveira
N. A. Silva
P. M. Oliveira
C. C. Ribeiro
Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients
Revista IBRACON de Estruturas e Materiais
reinforced concrete
second order effects
γz coefficient
B2 coefficient
title Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients
title_full Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients
title_fullStr Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients
title_full_unstemmed Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients
title_short Evaluation of second order moments in reinforced concrete structures using the γz and B2 coefficients
title_sort evaluation of second order moments in reinforced concrete structures using the γz and b2 coefficients
topic reinforced concrete
second order effects
γz coefficient
B2 coefficient
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952014000300002&lng=en&tlng=en
work_keys_str_mv AT dmoliveira evaluationofsecondordermomentsinreinforcedconcretestructuresusingthegzandb2coefficients
AT nasilva evaluationofsecondordermomentsinreinforcedconcretestructuresusingthegzandb2coefficients
AT pmoliveira evaluationofsecondordermomentsinreinforcedconcretestructuresusingthegzandb2coefficients
AT ccribeiro evaluationofsecondordermomentsinreinforcedconcretestructuresusingthegzandb2coefficients