An Investigation on the Behavior of 3D Steel Frames Under Progressive Collapse Effect Using Nonlinear Dynamic Analysis

Tayfur B., DALOĞLU A.

INTERNATIONAL JOURNAL OF STEEL STRUCTURES, cilt.23, sa.3, ss.767-779, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23 Sayı: 3
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s13296-023-00729-z
  • Dergi Adı: INTERNATIONAL JOURNAL OF STEEL STRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Compendex, INSPEC
  • Sayfa Sayıları: ss.767-779
  • Anahtar Kelimeler: Progressive collapse, Alternate path method, Steel structures, Nonlinear dynamic analysis, CENTER BRACING SYSTEM, MULTISTORY CAR PARKS, SEISMIC PERFORMANCE, BUILDING STRUCTURES, ROBUSTNESS, CONNECTIONS, RINGS, DUCTILITY, ELEMENT, DESIGN
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, the nonlinear dynamic analysis of steel structures against progressive collapse was examined, and the adequacy and validity of the analysis duration defined in the regulation were investigated. In addition, the effects of the seismic resistance and design against progressive collapse constraints on the structure were investigated. An optimization algorithm was used in order to conduct the iterative process with appropriate sections. The frames were analyzed to perform one cycle as recommended in the UFC, and then the analysis duration was extended until at least five cycles had been completed. When the UFC was considered only, it was observed that while some of the designs were classified as safe within the duration specified in the UFC, the structural integrity was seen to get into danger in the subsequent cycles. When constraints related to seismic effect are also included in the process, it was seen that the threat disappeared for the frames examined. In addition, it was observed that the steel frame resisted progressive collapse scenarios by creating formations like Vierendeel beams.