Techno Press


Steel and Composite Structures   Volume 26, Number 3, February10 2018, pages 315-328
DOI: http://dx.doi.org/10.12989/scs.2018.26.3.315
 
Experimental and numerical assessment of beam-column connection in steel moment-resisting frames with built-up double-I column
Seyed Mehdi Dehghan, Mohammad Amir Najafgholipour, Seyed Mohsen Ziarati and Mohammad Reza Mehrpour

 
Abstract     [Full Text]
    Built-up Double-I (BD-I) columns consist of two hot rolled IPE sections and two cover plates which are welded by fillet welds. In Iran, this type of column is commonly used in braced frames with simple connections and sometimes in low-rise Moment Resisting Frames (MRF) with Welded Flange Plate (WFP) beam-column detailing. To evaluate the seismic performance of WFP connection of I-beam to BD-I column, traditional and modified exterior MRF connections were tested subjected to cyclic prescribed loading of AISC. Test results indicate that the traditional connection does not achieve the intended behavior while the modified connection can moderately meet the requirements of MRF connection. The numerical models of the connections were developed in ABAQUS finite element software and validated with the test results. For this purpose, moment-rotation curves and failure modes of the tested connections were compared with the simulation results. Moreover to avoid improper failure modes, some improvements of the connections were evaluated through a numerical study.
 
Key Words
    built-up double-I column; cyclic test; finite element; seismic behavior; steel moment resisting frame
 
Address
Department of Civil and Environmental Engineering, Shiraz University of Technology, P.O. Box 71555-313, Modarres Blvd., Shiraz, Iran.
 

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