Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code

The Algerian seismic code assumes that the beam-column joints in monolithic reinforced concrete (RC) buildings are fully rigid. However, many experiments have proven the existence of relative rotations in these connections, and then the presence of relative transfer of bending moment. The present wo...

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Main Authors: Abdallah Yacine Rahmani, Said Hicham Boukhalkhal�, Mohamed Badaoui
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2022-07-01
Series:Fracture and Structural Integrity
Subjects:
Online Access:https://www.fracturae.com/index.php/fis/article/view/3434/3604
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author Abdallah Yacine Rahmani
Said Hicham Boukhalkhal�
Mohamed Badaoui
author_facet Abdallah Yacine Rahmani
Said Hicham Boukhalkhal�
Mohamed Badaoui
author_sort Abdallah Yacine Rahmani
collection DOAJ
description The Algerian seismic code assumes that the beam-column joints in monolithic reinforced concrete (RC) buildings are fully rigid. However, many experiments have proven the existence of relative rotations in these connections, and then the presence of relative transfer of bending moment. The present work aims to investigate the effect of beam-column joints modelling on the global seismic behaviour of reinforced concrete (RC) moment-resisting frame buildings, designed according to the Algerian seismic code recommendations. To consider the nonlinear deformation of the connections, an analytical model developed recently is used. This model includes two important deformation mechanisms; the first one covers the slippage of the continuous reinforcement within the column, whereas the second involves slippage caused by the creation of bending cracks at the extremities of the beams. Three multi-storey RC frames with different setback geometry, including a reference frame, are studied considering the connections as rigid/deformable. The nonlinear static procedure or pushover analysis is used to perform a nonlinear analysis of the studied structures and the results in terms of capacity curve, target displacement, storey drift, storey stiffness and the response reduction factor are presented. The results show the necessity of considering the beam-column connection flexibility when modelling this type of buildings
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spelling doaj-art-e69ab5559b8347a0b6a1fd789b7992802025-08-20T02:42:53ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-07-01166139440910.3221/IGF-ESIS.61.2610.3221/IGF-ESIS.61.26Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic codeAbdallah Yacine RahmaniSaid Hicham Boukhalkhal�Mohamed BadaouiThe Algerian seismic code assumes that the beam-column joints in monolithic reinforced concrete (RC) buildings are fully rigid. However, many experiments have proven the existence of relative rotations in these connections, and then the presence of relative transfer of bending moment. The present work aims to investigate the effect of beam-column joints modelling on the global seismic behaviour of reinforced concrete (RC) moment-resisting frame buildings, designed according to the Algerian seismic code recommendations. To consider the nonlinear deformation of the connections, an analytical model developed recently is used. This model includes two important deformation mechanisms; the first one covers the slippage of the continuous reinforcement within the column, whereas the second involves slippage caused by the creation of bending cracks at the extremities of the beams. Three multi-storey RC frames with different setback geometry, including a reference frame, are studied considering the connections as rigid/deformable. The nonlinear static procedure or pushover analysis is used to perform a nonlinear analysis of the studied structures and the results in terms of capacity curve, target displacement, storey drift, storey stiffness and the response reduction factor are presented. The results show the necessity of considering the beam-column connection flexibility when modelling this type of buildingshttps://www.fracturae.com/index.php/fis/article/view/3434/3604beam-column jointspushover analysisrc buildingssetback buildingsseismic behaviour
spellingShingle Abdallah Yacine Rahmani
Said Hicham Boukhalkhal�
Mohamed Badaoui
Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code
Fracture and Structural Integrity
beam-column joints
pushover analysis
rc buildings
setback buildings
seismic behaviour
title Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code
title_full Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code
title_fullStr Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code
title_full_unstemmed Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code
title_short Effect of beam-column joints flexibility on the seismic response of setback RC buildings designed according to the Algerian seismic code
title_sort effect of beam column joints flexibility on the seismic response of setback rc buildings designed according to the algerian seismic code
topic beam-column joints
pushover analysis
rc buildings
setback buildings
seismic behaviour
url https://www.fracturae.com/index.php/fis/article/view/3434/3604
work_keys_str_mv AT abdallahyacinerahmani effectofbeamcolumnjointsflexibilityontheseismicresponseofsetbackrcbuildingsdesignedaccordingtothealgerianseismiccode
AT saidhichamboukhalkhal effectofbeamcolumnjointsflexibilityontheseismicresponseofsetbackrcbuildingsdesignedaccordingtothealgerianseismiccode
AT mohamedbadaoui effectofbeamcolumnjointsflexibilityontheseismicresponseofsetbackrcbuildingsdesignedaccordingtothealgerianseismiccode