Analytical Modeling and Seismic Design of Steel Moment Connections with Welded Straight Haunch
Publication: Journal of Structural Engineering
Volume 127, Issue 9
Abstract
This paper describes the analytical modeling and a seismic design procedure for steel moment connections with a welded straight haunch. Recent test results showed that welding a straight haunch beneath the beam could be a viable solution for repair and rehabilitation of pre-Northridge moment connections and also new construction. Although a design procedure for the connection with a triangular welded haunch has been developed recently, it is not applicable for the straight haunch moment connection because the force transfer mechanism is different. Based on the finite-element analysis results, a simplified analytical model that considers the force interaction and deformation compatibility between the beam and haunch is developed. A design procedure as well as details that minimize the stress concentration at the haunch tip is also recommended.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ABAQUS user's manual. (1998). Version 5.8, Hibbit, Karlson & Sorenson, Inc.
2.
American Institute of Steel Construction (AISC). ( 1993). Load and resistance factor design (LRFD) specification, 2nd Ed., Chicago.
3.
American Institute of Steel Construction (AISC). ( 1997). Seismic provisions for structural steel buildings, 2nd Ed., Chicago.
4.
Dexter, R. J., and Melendrez, M. I. (2000). “Through-thickness properties of column flanges in welded moment connections.”J. Struct. Engrg., ASCE, 126(1), 24–31.
5.
Gross, J. L., Engelhardt, M. D., Uang, C.-M., Kasai, K., and Iwankiw, N. R. ( 1999). “Modification of existing welded steel moment frame connections for seismic resistance.” Steel Design Guide Series 12, American Institute of Steel Construction and National Institute of Standards and Technology, Chicago.
6.
Lee, C.-H., and Uang, C.-M. (1997). “Analytical modeling of dual panel zone in haunch repaired steel MRFs.”J. Struct. Engrg., ASCE, 123(1), 20–29.
7.
SAC. ( 1996). “Technical report: Experimental investigations of beam-column subassemblies.” Rep. No. SAC-96-01, SAC Joint Venture, Sacramento, Calif.
8.
SAC. ( 2000). “Seismic design criteria for new moment-resisting steel frame construction.” Rep. No. FEMA 350, SAC Joint Venture, Sacramento, Calif.
9.
Uang, C.-M., Bondad, D., and Lee, C.-H. ( 1998). “Cyclic performance of haunch repaired steel moment connections: Experimental testing and analytical modeling.” Engrg. Struct., 20(4-6), 552–561.
10.
Uang, C.-M., Yu, Q.-S., Noel, S., and Gross, J. (2000). “Cyclic testing of steel moment connections rehabilitated with RBS or welded haunch.”J. Struct. Engrg., ASCE, 126(1), 57–68.
11.
Yu, Q.-S., Uang, C.-M., and Gross, J. (2000). “Seismic rehabilitation design of steel moment connection with welded haunch.”J. Struct. Engrg., ASCE, 126(1), 69–78.
Information & Authors
Information
Published In
History
Received: Aug 29, 2000
Published online: Sep 1, 2001
Published in print: Sep 2001
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.