Numerical Approach to Assess the Performance of Concrete-Filled Steel Tube Stub Columns under Fire Hazards
Concrete-filled steel tube (CFST) stub columns made of various steel thicknesses and concrete types subjected to combined thermomechanical load were investigated using the finite element (FE) program, and optimization of steel and concrete for economic options was studied. The relationships among fire-resistance rating (FRR), critical temperature, load ratio, concrete grade, and steel thickness were investigated in this study from an economic and structural perspective. The strength and FRR of stub CFST columns with the same external dimensions can be kept in close proximity using larger concrete infills and thinner outer steel tubes instead of thicker outer steel tubes with thinner concrete cores, to make construction economical.
Authors
- Abhishek Chand
- Syed Bustan Fatima Warsi (ORCID: https://orcid.org/0000-0002-7784-4338)
- Ramkrishna Dandapat (ORCID: https://orcid.org/0000-0002-1398-6708)
- M. Longshithung Patton (ORCID: https://orcid.org/0000-0002-0140-8732)
- Dibyendu Adak (ORCID: https://orcid.org/0000-0003-1494-3010)
Institutions
- Veer Surendra Sai University of Technology (IN)
- National Institute of Technology Meghalaya (IN)
Publication Details
- Journal
- Journal of structural design and construction practice.
- Published
- 2025-04-04
- DOI
- https://doi.org/10.1061/jsdccc.sceng-1757
- Primary Topic
- Fire effects on concrete materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00