Seismic Design of Steel Beam-to-Box Column Connections

by K. C. Tsai, Natl Taiwan Univ, Taipei, Taiwan,
Egor P. Popov, Natl Taiwan Univ, Taipei, Taiwan,



Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation

Abstract:

This paper is a study of the ductility requirements of steel beam-to-box column connections using the bolted beam web and welded beam flange details. Since the beam moment at the connection is transmitted primarily through the beam flanges due to the rigidity of the column diaphragm plate, the ultimate moment capacity, Z_FF_u, of the beam flange alone, should exceed the strain-hardened beam moment, ?ZF_y, in order to assure the needed strength and ductility. Based on a combined analytical and experimental study, an ? value of 1.2 is found suitable for the design of steel beam-column connections intended for severe seismic service.

Subject Headings: Steel beams | Seismic design | Steel columns | Steel structures | Beam columns | Connections (structural) | Earthquake resistant structures

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