Abstract
The purpose of this study is to evaluate the seismic performance of steel box-column connections with electro-slag welding (ESW) stiffeners. Steel box columns have been widely adopted in seismically active areas, such as Japan and Taiwan. It is a common practice to weld diaphragm plates to the inner walls of steel box columns using the ESW process. However, there is still a lack of study evaluating the seismic performance of these steel box-column connections. In the first part of this paper, a literature review examines ESW stiffeners and their impacts on steel box-column connections. In the second part, finite element analysis is conducted on ESW misalignment and eccentricity. The result shows a correlation between connection failures and ESW stiffeners. In addition, ESW fusion diameters can affect the connections more significantly than ESW eccentricities and the thickness of diaphragm plates.
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Acknowledgements
The authors gratefully acknowledge the Ministry of Science and Technology, Taiwan, for the financial support under Grant 104-2625-M-390-002-. The authors also gratefully acknowledge the support of research assistants from the Department of Civil and Environmental Engineering, National University of Kaohsiung, Taiwan, namely, Syu, J. D. (with FEA simulation) and Wang, Y. S. (with redrawing).
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Chen, CH., Lin, KC., Jhuang, SJ. et al. Seismic Performance Evaluation of Steel Box-Column Connections with ESW Stiffeners. Int J Steel Struct 20, 766–776 (2020). https://doi.org/10.1007/s13296-020-00321-9
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DOI: https://doi.org/10.1007/s13296-020-00321-9