{
  "abstract": "To address insufficient lateral restraint and the susceptibility of the flat walls of traditional concrete-filled steel tubular (CFST) rectangular flat columns, a built-up rectangular CFST flat column with integrated longitudinal cold-formed stiffening ribs is proposed. The FE model was validated against the global response of a welded-plate CFST flat-column specimen. The model was then used to study the axial-compression and quasi-static cyclic behavior of the proposed columns. The coupled effects of aspect ratio, tube thickness, and rib dimensions were evaluated. The individual effects of tube thickness and rib dimensions under axial compression were further examined through the supplementary decoupled analysis. The results indicate that, compared with the non-stiffened control specimen, the stiffened configuration provides higher axial and cyclic load-bearing capacity, and more effective suppression of local outward bulging. Within the investigated parameter range, the coupled increase in tube thickness and rib dimensions improves axial and cyclic performance, while the decoupled analysis indicates that tube thickness is the dominant parameter governing axial load-bearing capacity and rib dimensions mainly contribute to local outward deformation control and post-peak load retention. These findings provide a reference for the parametric design and engineering application of stiffened cold-formed built-up rectangular flat CFST columns.",
  "abstract_shown": true,
  "affiliations": [
    "Anhui Technical College of Water Resources and Hydroelectric Power, Hefei, China.",
    "School of Civil Engineering, Hefei University of Technology, Hefei, China.",
    "School of Architecture and Art, Hefei University of Technology, Hefei, China."
  ],
  "article_type": "Research Article",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Wenjing Yu"
    },
    {
      "affs": [
        1
      ],
      "name": "Haijie Wang"
    },
    {
      "affs": [
        1
      ],
      "name": "Qing Jiang",
      "orcid": "0000-0002-3876-2436"
    },
    {
      "affs": [
        2
      ],
      "name": "Hanqin Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4x0zbsk6nnxp5.bib",
  "cited_by": 0,
  "doi": "10.1371/journal.pone.0361413",
  "fulltext_url": "https://europepmc.org/articles/PMC13716207",
  "id": "4x0zbsk6nnxp5",
  "issns": [
    "1932-6203"
  ],
  "landing_url": "https://doi.org/10.1371/journal.pone.0361413",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Alloys"
    ],
    [
      "heading",
      "Anatomy"
    ],
    [
      "heading",
      "Applied Mathematics"
    ],
    [
      "heading",
      "Aspect Ratio"
    ],
    [
      "heading",
      "Biology and Life Sciences"
    ],
    [
      "heading",
      "Buckling"
    ],
    [
      "heading",
      "Classical Mechanics"
    ],
    [
      "heading",
      "Composite Materials"
    ],
    [
      "heading",
      "Concrete"
    ],
    [
      "heading",
      "Damage Mechanics"
    ],
    [
      "heading",
      "Deformation"
    ],
    [
      "heading",
      "Elasticity"
    ],
    [
      "heading",
      "Finite Element Analysis"
    ],
    [
      "heading",
      "Geometry"
    ],
    [
      "heading",
      "Material Properties"
    ],
    [
      "heading",
      "Materials"
    ],
    [
      "heading",
      "Materials Science"
    ],
    [
      "heading",
      "Mathematics"
    ],
    [
      "heading",
      "Medicine and Health Sciences"
    ],
    [
      "heading",
      "Metallurgy"
    ],
    [
      "heading",
      "Musculoskeletal System"
    ],
    [
      "heading",
      "Physical Sciences"
    ],
    [
      "heading",
      "Physics"
    ],
    [
      "heading",
      "Research Article"
    ],
    [
      "heading",
      "Ribs"
    ],
    [
      "heading",
      "Skeleton"
    ],
    [
      "heading",
      "Steel"
    ],
    [
      "openalex",
      "2205|Structural Load-Bearing Analysis"
    ],
    [
      "plos",
      "/Biology and life sciences/Anatomy/Musculoskeletal system/Skeleton/Ribs"
    ],
    [
      "plos",
      "/Medicine and health sciences/Anatomy/Musculoskeletal system/Skeleton/Ribs"
    ],
    [
      "plos",
      "/Physical sciences/Materials science/Material properties/Elasticity"
    ],
    [
      "plos",
      "/Physical sciences/Materials science/Materials/Composite materials/Concrete"
    ],
    [
      "plos",
      "/Physical sciences/Materials science/Metallurgy/Alloys/Steel"
    ],
    [
      "plos",
      "/Physical sciences/Mathematics/Applied mathematics/Finite element analysis"
    ],
    [
      "plos",
      "/Physical sciences/Mathematics/Geometry/Aspect ratio"
    ],
    [
      "plos",
      "/Physical sciences/Physics/Classical mechanics/Damage mechanics/Deformation"
    ],
    [
      "plos",
      "/Physical sciences/Physics/Classical mechanics/Damage mechanics/Deformation/Buckling"
    ],
    [
      "plos",
      "/Physical sciences/Physics/Classical mechanics/Deformation"
    ],
    [
      "plos",
      "/Physical sciences/Physics/Classical mechanics/Deformation/Buckling"
    ]
  ],
  "openalex": "W7224132336",
  "pdf_url": "https://europepmc.org/articles/PMC13716207?pdf=render",
  "pmcid": "PMC13716207",
  "pmid": "42949903",
  "published": "2026-10-28",
  "publisher": "Public Library of Science",
  "ris": "https://research.draconitic.com/paper/4x0zbsk6nnxp5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.1371/journal.pone.0361413",
      "source": "plos",
      "url": "https://doi.org/10.1371/journal.pone.0361413"
    },
    {
      "first_seen": "2026-10-31T00:20:33Z",
      "native_id": "MED:42949903",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42949903"
    },
    {
      "first_seen": "2026-11-01T12:23:15Z",
      "native_id": "PMC13716207",
      "source": "pmc",
      "url": "https://doi.org/10.1371/journal.pone.0361413"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "heading:Biology and Life Sciences",
      "subfield": "general"
    },
    {
      "field": "chemistry",
      "origin": "plos:materials science",
      "subfield": "materials-polymers"
    },
    {
      "field": "mathematics",
      "origin": "heading:Geometry",
      "subfield": "geometry-topology"
    },
    {
      "field": "medicine",
      "origin": "plos:anatomy",
      "subfield": "physiology"
    },
    {
      "field": "physics",
      "origin": "heading:Physics",
      "subfield": "general"
    }
  ],
  "title": "Finite element analysis of the mechanical behavior of stiffened cold-formed built-up CFST flat columns",
  "title_text": "Finite element analysis of the mechanical behavior of stiffened cold-formed built-up CFST flat columns",
  "type": "peer-reviewed",
  "updated_at": "2026-11-01T12:23:15Z",
  "url": "https://research.draconitic.com/paper/4x0zbsk6nnxp5",
  "venue": "PLOS One",
  "versions": []
}