Numerical Study of Panel Zone in a Moment Connection without Continuity Plates. Issue 2 (25th January 2022)

• Record Type: Journal Article
• Authors: Rezaeian, Alireza; Jahanbakhti, Ebrahim; Fanaie, Nader
• Is Part Of: Journal of earthquake engineering. Volume 26:Issue 2(2022)
• Page Start: 930
• Page End: 948
• Publication Date: 2022-01-25
• Subjects: Numerical study -- moment connection -- continuity plate -- built-up box column -- seismic design; Earthquake engineering -- Periodicals; 624.1762
• DOI: 10.1080/13632469.2019.1695021
• Languages: English
• ISSNs: 1363-2469

Abstract

ABSTRACT: Built-up box columns are more frequently used in earthquake-prone regions such as Japan and Iran. As the installation process of continuity plates and welding inspection are difficult, expensive, and time-consuming, this study was aimed at experimentally and numerically investigating continuity plate elimination from built-up box columns with regard to the seismic design specifications of special and intermediate moment resisting frames. Results of an experimental study of three full-scale rigid connections between I-beam and box-column subjected to cyclic loading were used for comparison and verification of numerical results. Experimental study showed that samples reached story drift angle of 0.06 radians before experiencing the permissible strength degradation. Therefore, the tested connections satisfied the criterion for special moment resisting frame (SMRF) in AISC. Based on observations of crack initiation and propagation in the experimental study, a rupture index (RI) was employed to investigate the effects of different complete joint penetration (CJP) groove welding methods used in the experimental study on connection ductility as well as to identify the regions prone to crack initiation and propagation. Both the numerical and experimental results showed the superiority of using back plate in CJP welding.