{
  "abstract": "This study investigates the seismic performance of ultra-high-performance fiber-reinforced concrete (UHPFRC)-filled circular steel tubular columns through experimental testing and numerical simulation. Eight specimens were tested under combined axial and lateral cyclic loading, considering three concrete types (normal-strength concrete, high-strength concrete, and UHPFRC), two steel tube thicknesses (2 mm and 5 mm), and two axial load levels (5% and 25%). Failure modes, hysteretic behavior, load-carrying capacity, stiffness, ductility, and energy dissipation were evaluated. The results demonstrate that UHPFRC-filled columns exhibit superior performance, with 91.5% and 31.5% higher load-carrying capacity compared to normal-strength and high-strength concrete-filled columns with 2 mm tube thickness, respectively. Energy dissipation improved by 101% and 24% for the same comparisons. The use of UHPFRC enables steel savings of up to 71% while achieving comparable or superior lateral capacity. A validated finite element model incorporating confinement effects and cyclic material behavior is proposed for predicting column performance.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Mohamed A. Sakr"
    },
    {
      "name": "Ayman A. Seleema"
    },
    {
      "name": "Omnia Kharoub"
    },
    {
      "name": "Mostafa Abo Elnour",
      "orcid": "0009-0004-1160-2098"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/etrgjwnpgn97s.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-69255-2",
  "fulltext_url": null,
  "id": "etrgjwnpgn97s",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://www.nature.com/articles/s41598-026-69255-2",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2205|Structural Load-Bearing Analysis"
    ]
  ],
  "openalex": "W7216136708",
  "pdf_url": "https://www.nature.com/articles/s41598-026-69255-2.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/etrgjwnpgn97s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:19Z",
      "native_id": "10.1038/s41598-026-69255-2",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41598-026-69255-2"
    }
  ],
  "subjects": [],
  "title": "Experimental and numerical investigations of UHPFRC-filled circular steel tubular columns under axial and lateral cyclic loads",
  "title_text": "Experimental and numerical investigations of UHPFRC-filled circular steel tubular columns under axial and lateral cyclic loads",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:19Z",
  "url": "https://research.draconitic.com/paper/etrgjwnpgn97s",
  "venue": "Scientific Reports",
  "versions": []
}