Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut
Abstract The existence of diverse modeling approaches for masonry-infilled frames causes uncertainty among practicing engineers when seeking a definitive model for their design practice. This paper presents a practical and simple approach to modeling the masonry-infilled frames. The proposed approac...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-02-01
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| Series: | Journal of Engineering and Applied Science |
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| Online Access: | https://doi.org/10.1186/s44147-024-00556-x |
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| _version_ | 1823862245517426688 |
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| author | Ahmed M. El-Kholy Sayed M. Sayed Mohamed M. El-Assaly Mohamed K. Ismail |
| author_facet | Ahmed M. El-Kholy Sayed M. Sayed Mohamed M. El-Assaly Mohamed K. Ismail |
| author_sort | Ahmed M. El-Kholy |
| collection | DOAJ |
| description | Abstract The existence of diverse modeling approaches for masonry-infilled frames causes uncertainty among practicing engineers when seeking a definitive model for their design practice. This paper presents a practical and simple approach to modeling the masonry-infilled frames. The proposed approach models the plasticity in the beams and columns of the reinforced concrete (RC) frames using flexural plastic hinges while modeling the masonry panel as a nonlinear equivalent strut. The implementation of the hinge is based on discretizing the frame cross-section into fibers and utilizing a popular formula to estimate the plastic hinge length specific to masonry-infilled frames. Furthermore, the implemented equivalent strut model employs a trilinear force–displacement backbone curve. The efficiency of this approach was evaluated against the experimental results of four different tested infilled RC frames available in the literature. A conventional approach based on a typical explicit plastic hinge was included for comparison. Unlike the conventional approach, the numerical results obtained from the presented approach better matched the experimental results. Subsequently, the presented approach was utilized to investigate the effect of the aspect ratio of clay masonry infill panels on the behavior of RC frames. The investigation revealed that the panels with larger aspect ratios provided a larger contribution to the ultimate lateral load, despite experiencing lower ultimate axial stresses compared to panels with smaller aspect ratios. However, increasing the thickness of the masonry infill with a small aspect ratio appeared to improve its effectiveness in resisting the lateral force. |
| format | Article |
| id | doaj-art-d68a47fbaecc46388981508b8c7eb1fc |
| institution | Kabale University |
| issn | 1110-1903 2536-9512 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Engineering and Applied Science |
| spelling | doaj-art-d68a47fbaecc46388981508b8c7eb1fc2025-02-09T12:38:52ZengSpringerOpenJournal of Engineering and Applied Science1110-19032536-95122025-02-0172112010.1186/s44147-024-00556-xModeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strutAhmed M. El-Kholy0Sayed M. Sayed1Mohamed M. El-Assaly2Mohamed K. Ismail3Civil Engineering Department, Faculty of Engineering, Fayoum UniversityCivil Engineering Department, Faculty of Engineering, Beni Suef UniversityCivil Engineering Department, Faculty of Engineering, Fayoum UniversityStructural Engineering Department, Faculty of Engineering, Cairo UniversityAbstract The existence of diverse modeling approaches for masonry-infilled frames causes uncertainty among practicing engineers when seeking a definitive model for their design practice. This paper presents a practical and simple approach to modeling the masonry-infilled frames. The proposed approach models the plasticity in the beams and columns of the reinforced concrete (RC) frames using flexural plastic hinges while modeling the masonry panel as a nonlinear equivalent strut. The implementation of the hinge is based on discretizing the frame cross-section into fibers and utilizing a popular formula to estimate the plastic hinge length specific to masonry-infilled frames. Furthermore, the implemented equivalent strut model employs a trilinear force–displacement backbone curve. The efficiency of this approach was evaluated against the experimental results of four different tested infilled RC frames available in the literature. A conventional approach based on a typical explicit plastic hinge was included for comparison. Unlike the conventional approach, the numerical results obtained from the presented approach better matched the experimental results. Subsequently, the presented approach was utilized to investigate the effect of the aspect ratio of clay masonry infill panels on the behavior of RC frames. The investigation revealed that the panels with larger aspect ratios provided a larger contribution to the ultimate lateral load, despite experiencing lower ultimate axial stresses compared to panels with smaller aspect ratios. However, increasing the thickness of the masonry infill with a small aspect ratio appeared to improve its effectiveness in resisting the lateral force.https://doi.org/10.1186/s44147-024-00556-xMacromodelingFibers plastic hingeExplicit plastic hingeEquivalent strutTrilinear backbone curveRC frames |
| spellingShingle | Ahmed M. El-Kholy Sayed M. Sayed Mohamed M. El-Assaly Mohamed K. Ismail Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut Journal of Engineering and Applied Science Macromodeling Fibers plastic hinge Explicit plastic hinge Equivalent strut Trilinear backbone curve RC frames |
| title | Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut |
| title_full | Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut |
| title_fullStr | Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut |
| title_full_unstemmed | Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut |
| title_short | Modeling of masonry infilled RC frames with different aspect ratios using plastic hinge and equivalent strut |
| title_sort | modeling of masonry infilled rc frames with different aspect ratios using plastic hinge and equivalent strut |
| topic | Macromodeling Fibers plastic hinge Explicit plastic hinge Equivalent strut Trilinear backbone curve RC frames |
| url | https://doi.org/10.1186/s44147-024-00556-x |
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