Advanced Steel Construction

Vol. 9, No. 4, pp. 334-349 (2013)




Jong Wan Hu

Assistant Professor, Department of Civil and Environmental Engineering, College of Urban Science, University of Incheon, Incheon, 406-840,

Republic of Korea (Head of Center, Incheon Disaster Prevention Research Center, University of Incheon, Incheon, 406-840, Republic of Korea)

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 27 March 2012; Revised: 8 July 2012; Accepted:13 July 2012




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This paper focuses on seismic design and behavior of hybrid structures composed of partially restrained (PR) steel-concrete composite-moment frames (C-MFs). The innovative aspects of this research are to introduce new smart connections between steel beams and concrete-filled tube (CFT) columns that utilize a combination of low-carbon steel and shape memory alloy (SMA) components in the C-MF design. In these new connections, we can exploit the recentering effect provided by super-elastic SMA tension bars to reduce both building damage and residual drift after a major earthquake event, while the low-carbon steel components provide excellent energy dissipation. The results of corresponding component tests were used to develop cyclic stiffness models for individual components in the connection. The seismic behavior of the composite moment-resisting frames with new connection systems was reproduced by performing nonlinear pushover and time-history analyses. The analysis results suggest that these frames are very effective in resisting seismic events due to the structural advantages of the smart SMA PR-CFT connections.



Composite moment frames, Shape memory alloys (SMAs), Partially restrained (PR) connections, Concrete-filled tube (CFT) columns, Stiffness models, Mechanical modeling, Nonlinear frame analyses


[1] Tsai, K.C., Hsiao, P.C., Wang, K.J., Weng, Y.T., Hsia, P.C., Lin, K.C., Chen, C.H., Lai, J.W., and Lin, S.L., “Pseudo-dynamic Tests of a Full-scale CFT/BRB Frame-Part I: Specimen Design, Experiment and Analysis”, Earthquake Engineering and Structural Dynamics, 2008, Vol. 37, pp. 1081-1098.

[2] Wu, L., Chung, L.L., Tsai, S.F., Lu, C.F., and Huang, G.L., “Seismic Behavior of Bidirectional Bolted Connections for CFT Columns and H-beams”, Engineering Structures, 2008, Vol. 29, No. 3, pp. 395-407.

[3] American Institute of Steel Construction (AISC), Seismic Provisions for Structural Steel Buildings (ANSI/AISC 341-05), 2005, Chicago, IL.

[4] American Society of Civil Engineers (ASCE), Minimum Design Loads for Buildings and Other Structures (ASCE 7-05), 2002, Reston, VA.

[5] Wu, L.Y., Chung, L.L., Tsai, S.F., Lu, C.F., and Huang, G.L., “Seismic Behavior of Bolted Beam to Column Connections for Concrete Filled Steel Tube”, Journal of Constructional Steel Research, 2005, Vol. 61, No. 10, pp. 1387-1410.

[6] Park, T., Hwang, W.S., and Hu, J.W., “Damage Evaluation of Composite-special Moment Frames with Concrete-filled Tube Columns under Strong Seismic Loads”, KSCE Journal of Civil Engineering, 2011, Vol. 15, No. 8, pp. 1381-1394.

[7] Hu, J.W., Kang, Y.G., Choi, D.H., and Park, T., “Seismic Design and Behavior of Composite-moment Frames with Steel Beam-to-concrete Filled Tube Column Connections”, KSSC International Journal of Steel Structures, 2010, Vol. 10, No. 2, pp. 177-191.

[8] Hu, J.W., Park, J., and Leon, R.T., “Advanced Analysis and Performance based Evaluation of Concrete Filled Tube (CFT) Columns”, International Journal of Advanced Steel Construction, 2010, Vol. 6, No. 4, pp. 1018-1032.

[9] Leon, R.T., “Seismic Performance of Bolted and Riveted Connections, Background Reports: Metallugy, Fracture Mechanics, Welding, Moment Connections, and Frame System Behavior”, FEMA Publication No. 288 Federal Emergency Management Association (FEMA), Washington (DC), 1997.

[10] Green, T.P., Leon, R.T., and Rassati, G.A., “Bidirectional Tests on Partially Restrained, Composite Beam-column Connections”, ASCE Journal of Structural Engineering, 2004, Vol. 130, No. 2, pp. 320-327.

[11] Rassati, G.A., Leon, R.T., and Noe, S., “Component Modeling of Partially Restrained Composite Joints under Cyclic and Dynamic Loading”, ASCE Journal of Structural Engineering, 2004, Vol. 130, No. 2, pp. 343-351.

[12] Penar, B.W., “Recentering Beam-column Connections using Shape Memory Alloys”, Master’s Thesis, 2005, Georgia Institute of Technology, 2005.

[13] Hu, J. W., “Seismic Performance Evaluations and Analyses for Composite Moment Frames with Smart SMA PR-CFT Connections”, Ph.D. Dissertation, Georgia Institute of Technology, 2008.

[14] DesRoches, R., McCormick, J., and Delemont, M., “Cyclic Properties of Superelasic Shape Memory Alloy Wires and Bars”, ASCE Journal of Structural Engineering, 2004, Vol.130, No.5, pp. 732-740.

[15] Mazzoni, S., Mckenna, F., and Fenves, G.L., “OpenSEES Command Language Manual v. 1.7.3., Department of Civil Environmental Engineering”, University of California at Berkley, 2006.

[16] Braconi, A., Salvatore, W., Tremblay, R., and Bursi, O.S., “Behaviour and Modelling of Partial-strength Beam-to-column Composite Joints for Seismic Applications”, Earthquake Engineering and Structural Dynamics, 2007, Vol. 36, pp. 142-161.

[17] Kulak, G.L., Fisher, J.W., and Struik, J.H.A., “Guide to Design Criteria for Bolted and Riveted Joint”, 2nd Edition, Johns Wiley & Sons, 1987.

[18] Rex, C.O., and Easterling, W.S., “Behavior and Modeling of a Single Plate Bearing on a Single Bolt”, Report No. CE/VPI-ST 96/14, Virginia Polytechnic Institute and State University, Blacksburg, VA, 1996.

[19] Astaneh-Asl, A., “Seismic Design of Bolted Steel Moment-resisting Frames”, Technical Informational & Product Service, 1995.

[20] Hu, J.W., Leon, R.T., and Park, T., “Analytical Investigation on Ultimate Behaviors for Steel Heavy Clip-angle Connections using FE Analysis”, ISIJ International, 2010, Vol. 50, No. 6, pp. 883-892.

[21] Swanson, J.A., “Characterization of the Strength, Stiffness, and Ductility Behavior of T-stub Connection”, Ph.D. Dissertation, Georgia Institute of Technology, 1999.

[22] Swanson, J.A., “Ultimate Strength Prying Models for Bolted T-stub Connections”, AISC Engineering Journal, 2002, Vol. 39, No. 3, pp. 136-147.

[23] Davide, F., “Shape Alloy Devices in Earthquake Engineering: Mechanical Properties, Constitutive Modeling and Numerical Simulations”, Master’s Thesis, Rose School in Italy, 2003.

[24] International Code Council (ICC), International Building Code (IBC 2003), Falls Church, VA, 2003.

[25] American Institute of Steel Construction (AISC), Manual of Steel Construction: Load and Resistance Factor Design (LRFD), 3rd Edition, Chicago, IL, 2001.

[26] Somerville, P. G., Smith, N., Punyamurthula, S., and Sun, J., “Development of Ground Motion Time Histories for Phase 2 of the FEMA/SAC Steel Project”, Report No.SAC/BD 97/04, SAC Background Document, 1997.

[27] Newmark, N.M., “A Method of Computation for Structural Dynamics”, ASCE Journal of Engineering Mechanics Division, 1959, Vol. 85, No. 3.