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Enhancing seismic performance of reinforced concrete dual wall-frame buildings: Integrating alternative modeling and design approaches.

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Title: Enhancing seismic performance of reinforced concrete dual wall-frame buildings: Integrating alternative modeling and design approaches.
Authors: Lopez-Machado, N.1 (AUTHOR) nalopez4@uc.cl, Lopez-Garcia, D.1,2 (AUTHOR), Parra, P. F.3 (AUTHOR) pablo.parra@uai.cl, Araya-Letelier, G.4,5 (AUTHOR)
Source: Bulletin of Earthquake Engineering. Jan2026, Vol. 24 Issue 1, p515-550. 36p.
Subject Terms: *Seismic response, *Boundary element methods, *Chileans, *Reinforced concrete buildings, *Flexural strength, *Reinforced concrete
Geographic Terms: Chile
Abstract: This study delves into two critical issues related to the seismic analysis and design of Chilean reinforced concrete dual wall-frame buildings. First, it evaluates the efficacy of Special Boundary Elements (SBEs) in shear walls, whose seismic performance enhancement remains uncertain despite recent (i.e., after the 2010 earthquake) mandates in Chile. Second, it investigates the relevance of explicit inclusion of slabs in 3D nonlinear models (in dual wall-frame buildings slabs are often not modeled for computational expediency). Various analytical models of a representative 16-story dual wall-frame archetype building are meticulously evaluated using Perform3D. Different vertical heights of the SBEs (ranging from 0 to 5 stories) and different values of the effective flexural stiffness of the slabs (ranging from 0 to 100% of the gross cross-section stiffness) are considered. Subduction ground motions representative of the Chilean seismicity are selected and scaled based on detailed seismic hazard analyses. Evaluation metrics include collapse fragility functions and 50-year collapse probabilities. Inelastic deformations in the shear walls are thoroughly analyzed. It was found that the effective flexural stiffness of the slabs has a non-negligible influence on the analytical collapse probability, and that SBEs do not provide ductility but they do reduce the collapse probability. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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DbLabel: Energy & Power Source
An: 190668985
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Enhancing seismic performance of reinforced concrete dual wall-frame buildings: Integrating alternative modeling and design approaches.
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  Data: <searchLink fieldCode="AR" term="%22Lopez-Machado%2C+N%2E%22">Lopez-Machado, N.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nalopez4@uc.cl</i><br /><searchLink fieldCode="AR" term="%22Lopez-Garcia%2C+D%2E%22">Lopez-Garcia, D.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Parra%2C+P%2E+F%2E%22">Parra, P. F.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> pablo.parra@uai.cl</i><br /><searchLink fieldCode="AR" term="%22Araya-Letelier%2C+G%2E%22">Araya-Letelier, G.</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Earthquake+Engineering%22">Bulletin of Earthquake Engineering</searchLink>. Jan2026, Vol. 24 Issue 1, p515-550. 36p.
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  Data: *<searchLink fieldCode="DE" term="%22Seismic+response%22">Seismic response</searchLink><br />*<searchLink fieldCode="DE" term="%22Boundary+element+methods%22">Boundary element methods</searchLink><br />*<searchLink fieldCode="DE" term="%22Chileans%22">Chileans</searchLink><br />*<searchLink fieldCode="DE" term="%22Reinforced+concrete+buildings%22">Reinforced concrete buildings</searchLink><br />*<searchLink fieldCode="DE" term="%22Flexural+strength%22">Flexural strength</searchLink><br />*<searchLink fieldCode="DE" term="%22Reinforced+concrete%22">Reinforced concrete</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Chile%22">Chile</searchLink>
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  Label: Abstract
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  Data: This study delves into two critical issues related to the seismic analysis and design of Chilean reinforced concrete dual wall-frame buildings. First, it evaluates the efficacy of Special Boundary Elements (SBEs) in shear walls, whose seismic performance enhancement remains uncertain despite recent (i.e., after the 2010 earthquake) mandates in Chile. Second, it investigates the relevance of explicit inclusion of slabs in 3D nonlinear models (in dual wall-frame buildings slabs are often not modeled for computational expediency). Various analytical models of a representative 16-story dual wall-frame archetype building are meticulously evaluated using Perform3D. Different vertical heights of the SBEs (ranging from 0 to 5 stories) and different values of the effective flexural stiffness of the slabs (ranging from 0 to 100% of the gross cross-section stiffness) are considered. Subduction ground motions representative of the Chilean seismicity are selected and scaled based on detailed seismic hazard analyses. Evaluation metrics include collapse fragility functions and 50-year collapse probabilities. Inelastic deformations in the shear walls are thoroughly analyzed. It was found that the effective flexural stiffness of the slabs has a non-negligible influence on the analytical collapse probability, and that SBEs do not provide ductility but they do reduce the collapse probability. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10518-025-02144-7
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 36
        StartPage: 515
    Subjects:
      – SubjectFull: Seismic response
        Type: general
      – SubjectFull: Boundary element methods
        Type: general
      – SubjectFull: Chileans
        Type: general
      – SubjectFull: Reinforced concrete buildings
        Type: general
      – SubjectFull: Flexural strength
        Type: general
      – SubjectFull: Reinforced concrete
        Type: general
      – SubjectFull: Chile
        Type: general
    Titles:
      – TitleFull: Enhancing seismic performance of reinforced concrete dual wall-frame buildings: Integrating alternative modeling and design approaches.
        Type: main
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          Name:
            NameFull: Lopez-Machado, N.
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            NameFull: Lopez-Garcia, D.
      – PersonEntity:
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            NameFull: Parra, P. F.
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            NameFull: Araya-Letelier, G.
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          Dates:
            – D: 01
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 1570761X
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              Value: 24
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              Value: 1
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            – TitleFull: Bulletin of Earthquake Engineering
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