Experimental Study on Seismic Behaviors of Improved Composite Steel Staggered Truss Structures

Abstract:

According to the poorly seismic behaviors of composite staggered trusses system, an improved composite staggered trusses system was proposed. Based on the experimental study of a 1/3 scale improved composite staggered truss frame steel structure model under cyclic loading, the seismic behaviors and failure mechanism was studied, and the seismic behaviors was evaluated by the hysteretic behavior, ductility, energy dissipation and rigidity degeneration. The study showed that the improved composite staggered truss steel structures had the advantages in bearing capacity, ductility, deformability and energy dissipation, but the lateral rigidity was weak and non-uniform along its vertical layout. The stress measurement showed that the plastic hinge formed in the web members of the truss firstly, then, in the chord members of the truss, and finally the plastic hinges formed in the column, earthquake energy mostly dissipated by the truss members, the failure mechanism of the improved composite staggered truss steel structures was the beam hinges failure mechanism.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 1383-1386
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.1383
• Online since: May 2012
• Authors: Hong Dong Ran, Wen Xv, Ming Zhou Su
• Keywords: Cyclic Load, Failure Mechanism, Improved Composite Staggered Trusses System, Seismic Behavior

References

[1] H. P. Bakke, L. A. Kloiber, and A. C. Nuhn, "Staggered truss building system", Civil Engineering, ASCE, November, 1969.

[2] Raj P. Gupta, and Subhash C. Goel, "Dynamic analysis of staggered truss framing system" Journal of the Structural Division, 1972, 98(7), 1475-1492.

DOI: 10.1061/jsdeag.0003275

[3] Subhash C. Goel, and Ahmad M. Itani, "Seismic behavior of open-web truss-moment frames", Journal of Structural Engineering, 1994, 120(6), 1763-1780.

DOI: 10.1061/(asce)0733-9445(1994)120:6(1763)

[4] Subhash C. Goel, and Ahmad M. Itani, "Seismic-resistant special truss-moment frames", Journal of Structural Engineering, 1994, 120(6), 1781-1797.

DOI: 10.1061/(asce)0733-9445(1994)120:6(1781)

[5] Neil Wexler, Feng-Bao Lin, "Steel Design Guide Series 14: Staggered Truss Framing Systems". American Institute of Steel Construction, 2002.

[6] Jinkoo Kim, Joon-Ho Lee, Young-Moon Kim, "Inelastic behavior of staggered truss systems", Struct. Design Tall Spec. Build, 2007, 16(1), 85-105.

DOI: 10.1002/tal.361

[7] Ran Hongdong, Su Mingzhou, Hu Tianbing and Shen Lin, "An experimental study on the hysteretic behavior of composite steel staggered truss system under cyclic load", China Civil Engineering Journal, 2009, 42(11), 55-63 (in Chinese).

[8] Gong Wenbo, "Experimental Study on Bearing Capacity and Failure Mechanism of Improved Composite Steel Staggered Truss Structures", Master's thesis, Xian University of Architecture & Technology, 2007.