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Conference Proceedings → 1999 T.R. Higgins Award Lecture: Design of Reduced Beam Section Moment Connections
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Product code: NA Non Member Price: $10.00 |
Product Description
The reduced beam section (RBS) moment connection, also known as the "dog bone," is rapidly emerging as a popular choice for seismic-resistant steel moment frames. While research and testing on this connection is continuing, prior research and field experience have shown that the RBS is capable of economically providing ductile and reliable performance. In the RBS connection, portions of the beam flanges are selectively trimmed in the region adjacent to the beam-to-column connection. A circular radius cutout shape appears to be particularly advantageous. Research has shown that excellent performance can be achieved by combining the RBS cut in the flange together with improved detailing and welding practices at the beam-to column connection. This paper will present design recommendations for radius cut RBS moment connections. Previous research on RBS connections is briefly reviewed. This is followed by a suggested procedure for sizing the RBS cuts in the beam flanges. Recommendations are than provided on welding and detailing the beam-to-column connection. Finally, a design example is presented to demonstrate the design recommendations.