Steel and Composite Structures

  • 제41권5호
  • /
  • Pages.747-759
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  • 2021
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Seismic response of built-up double-I column in steel moment resisting frame using welded external diaphragm plate

  • Tabebordbar, Amir (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Dehghan, Seyed Mehdi (Department of Civil and Environmental Engineering, Shiraz University of Technology) ;
  • Fathi, Farshid (Department of Civil Engineering, Najafabad Branch, Islamic Azad University) ;
  • Najafgholipour, Mohammad Amir (Department of Civil and Environmental Engineering, Shiraz University of Technology)
  • 투고 : 2020.10.28
  • 심사 : 2021.11.01
  • 발행 : 2021.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

Built-up Double-I (BD-I) columns have been commonly used for mid-rise steel-frame structures in Iran. These columns consist of two hot rolled IPE sections which are connected by two cover plates and fillet welds. Until 2017, BD-I columns were employed in intermediate moment resisting frames (MRF) using welded flange plate (WFP) connections. To evaluate the seismic behavior of the connections, four samples were made and tested based on cyclic loading according to AISC 341-16. It was concluded that typical samples cannot satisfy the seismic provisions related to intermediate MRFs. In contrast, the proposed connections retrofitted with two-part external diaphragms were able to satisfy not only the seismic requirements related to intermediate MRFs but also those related to special MRFs according to AISC. The numerical modeling of these samples was performed using ABAQUS finite element software. This study compared the hysteresis moment-rotation curves, plastic strains, and behavior modes in both experimental samples and numerical models.

키워드

과제정보

The authors would like to express their sincere gratitude to Tir & Setoon Pars Industrial Company (T.S.P) for fabricating the full-scale test samples. The cooperation of Mr. Etemadi is highly appreciated.

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