DOI QR코드

DOI QR Code

Design and Applications of Buckling-Restrained Braces

  • 발행 : 2018.09.30

초록

Buckling-Restrained Braces (BRBs) have been widely applied to tall buildings in seismic areas in the world. In this paper the author summarizes representative types of BRB compositions and shows two cases of special applications of BRBs. In the first case, BRB diagonals for tall building were used to provide stable cyclic nonlinear hysteresis and also used to limit forces generated at columns, connections and walls. The top outriggers are pre-loaded by jacks to resolve long-term differential shortenings between the concrete core wall and concrete-filled steel box columns. The second case is the retrofit work for a communication tower by replacing the insufficiently strong members with BRBs in Japan.

키워드

참고문헌

  1. ASTM. Standard Specification for Carbon Structural Steel.
  2. Fujimoto, M., Wada, A., Saeki, E., Takeuchi, T., and Watanabe, A. (1990) Development of Unbonded Brace, Querterly Column, No. 115, pp. 91-96.
  3. JFE Steel Engineering: Double tube braces, https://www.jfecivil.com/system/device/products2/
  4. JIS G 3136. (2012). Rolled steels for building structure.
  5. Joseph, L. M., Gulec, C., Schwaiger, K., and Justin, M. (2016). Wilshire Grand: Outrigger Designs and Details for a Highly Seismic Site, International Journal of High- Rise Buildings, Vol. 5, Issue 1, pp. 1-12. https://doi.org/10.21022/IJHRB.2016.5.1.1
  6. Nippon Steel Engineering: Unbonded brace, http://www.unbondedbrace.com/
  7. Star Seismic: Starseismic BRB, http://www.starseismic.net/
  8. Star Seismic: Corebrace, http://www.corebrace.com/
  9. STRUCTURE Magazine Aug. 2015. Wilshire Grand by Gerard, M., Nieblas, S. E., Leed, A. P. and Phuoc, Tran.
  10. Takeuchi, T., Ogawa, T., Suzuki, T., Kumagai, T., and Yamagata, C. (2005). A Basic Study on Damage-Controlled Design Concept for Truss Frame Structures, AIJ, J. of Struct. Eng., Vol. 51B, pp. 31-37. (in Japanese)
  11. Takeuchi, T. (2013) Retrofit of Damaged Gymnasia and Towers according to Response Control Concept, Proceedings of 10th International Conference on Urban Earthquake Engineering (Tokyo), pp. 17-24.
  12. Tsai, K. C., Lai, J. W., Hwang, Y. C., Lin, S. L., and Weng, C. H. (2004). Research and application of double-core Buckling-restrained Braces in Taiwan, 13th World Conference on Earthquake Engineering Vancouver, B. C., Canada August 1-6, Paper No. 2179.
  13. Wada, A., Connor, J., Kawai, H., Iwata, M., and Watanabe, A. (1992). Damage Tolerant Structure, ATC-15-4, Proc. 5th, US-Japan WS on the Imprement of Building Structural Design and Construction Practices.
  14. Wada, A. and Takeuchi, T. (2017) Buckling-Restrained Braces and Applications, The Japan Society of Seismic Isolation, Chapter 1.
  15. Wada, A. and Takeuchi, T. (2017) Buckling-Restrained Braces and Applications, Chapter 7., The Japan Society of Seismic Isolation.
  16. Watanabe, A., Hitomi, Y., Saeki, E., Wada, A., and Fujimoto, M. (1988) Properties of brace encased in buckling-restraining concrete and steel tube, 9WCEE, Vol. IV, pp. 719- 724, JADP, Tokyo, Japan.