Experimental Investigations of RC Frames Retrofitted by Steel Braced Frames Using a New Hybrid Connection

Abstract:

In this paper, a new connection technique for installing steel braced frame inside an existing RC frame is proposed. The proposed connection, which is called “Hybrid Connection”, consists of high-strength grout, steel plates and high-strength bolts. In the current investigation, two fundamental modes, namely, Type I and Type II are experimentally verified. In the fundamental mode of Type I, the steel braces buckle and stretch, and the RC frame and the steel frame exhibit flexural behavior. In the fundamental mode of Type II, direct-shear failure happens in the hybrid connection at the beam connection, and punching (direct-shear) failure occurs at the top of RC columns.

• Periodical: Applied Mechanics and Materials (Volume 82)
• Pages: 594-599
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.82.594
• Online since: July 2011
• Authors: Misato Nishiyama, Pasha Javadi, Koki Maeda, Tetsuo Yamakawa
• Keywords: Hybrid Connection, Non-Ductile RC Frame, Retrofit, Steel-Braced Frame

References

[1] The Japan Building Disaster Prevention Association: Standard, Guidelines and Technical Manual for Seismic Evaluation and Retrofit of Existing RC Buildings (2001), (in Japanese).

[2] T. Yamakawa, P. Javadi and M. Kobayashi: Cyclic Loading Test on Retrofitted RC Frames –A New Hybrid Connection for Installation of Steel Braced Frame Inside a RC Frame (Part 1)-, Journal of Structural and Construction Engineering, AIJ, Vol. 74, No. 642 (2009), p.1487~1494.

DOI: 10.3130/aijs.74.1487

[3] T. Yamakawa, P. Javadi, K. Maeda and M. Kobayashi: Capacity-Based Analytical Evaluations of Retrofitted RC Frames–A New Hybrid Connection for Installation of Steel Braced Frame Inside a RC Frame (Part 2)-, Journal of Structural and Construction Engineering, AIJ, Vol. 75, No. 651 (2010), p.987~996.

DOI: 10.3130/aijs.75.987