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Progressive Collapse Behavior of Precast Floor-to-Floor System Using Pullout Failure Mode of Ties.

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Title: Progressive Collapse Behavior of Precast Floor-to-Floor System Using Pullout Failure Mode of Ties.
Authors: Tohidi, Mosleh1, Bahadori-Jahromi, Ali2
Source: ACI Structural Journal. Mar2026, Vol. 123 Issue 2, p3-14. 12p.
Subjects: Progressive collapse, Precast concrete, Reinforcing bars, Ductility, Structural engineering
Abstract: Although the issue of progressive collapse has been significantly studied within the broader field of structural engineering, the literature on the analysis and design of connections in precast concrete cross-wall buildings is rather limited. This study aims to investigate the progressive collapse behavior of a typical precast floor-tofloor system, considering the pullout failure mode of the deformed bar into grouted keyways of slabs at the joints. To do so, the pullout behavior of deformed bars in grouted keyways of the connections was first experimentally studied. Subsequently, by integrating the pullout force-displacement data with findings from full-scale floor-to-floor experiments, an approximate analytical approach was formulated and validated to estimate the resistance to progressive collapse. The findings reveal that the floor-to-floor system, when subjected to the pullout failure mode following the removal of a wall support, demonstrates a secondary peak strength and considerable ductility in contrast to the bar fracture failure mode. [ABSTRACT FROM AUTHOR]
Copyright of ACI Structural Journal is the property of American Concrete Institute and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Progressive Collapse Behavior of Precast Floor-to-Floor System Using Pullout Failure Mode of Ties.
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  Data: <searchLink fieldCode="DE" term="%22Progressive+collapse%22">Progressive collapse</searchLink><br /><searchLink fieldCode="DE" term="%22Precast+concrete%22">Precast concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Reinforcing+bars%22">Reinforcing bars</searchLink><br /><searchLink fieldCode="DE" term="%22Ductility%22">Ductility</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+engineering%22">Structural engineering</searchLink>
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  Label: Abstract
  Group: Ab
  Data: Although the issue of progressive collapse has been significantly studied within the broader field of structural engineering, the literature on the analysis and design of connections in precast concrete cross-wall buildings is rather limited. This study aims to investigate the progressive collapse behavior of a typical precast floor-tofloor system, considering the pullout failure mode of the deformed bar into grouted keyways of slabs at the joints. To do so, the pullout behavior of deformed bars in grouted keyways of the connections was first experimentally studied. Subsequently, by integrating the pullout force-displacement data with findings from full-scale floor-to-floor experiments, an approximate analytical approach was formulated and validated to estimate the resistance to progressive collapse. The findings reveal that the floor-to-floor system, when subjected to the pullout failure mode following the removal of a wall support, demonstrates a secondary peak strength and considerable ductility in contrast to the bar fracture failure mode. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of ACI Structural Journal is the property of American Concrete Institute and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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        PageCount: 12
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      – SubjectFull: Progressive collapse
        Type: general
      – SubjectFull: Precast concrete
        Type: general
      – SubjectFull: Reinforcing bars
        Type: general
      – SubjectFull: Ductility
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      – SubjectFull: Structural engineering
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      – TitleFull: Progressive Collapse Behavior of Precast Floor-to-Floor System Using Pullout Failure Mode of Ties.
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              Text: Mar2026
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