The Static and Dynamic Seismic Design of Multi-Layer Buckling Restraint Braced Steel Frame

Abstract:

For the aim to simplify the dynamic analysis responses of multi-storey steel frame structure under strong earthquake, the level participation ratio β of buckling restrained brace（BRB）as the main research, 6 multi buckling restrained braced frame（BRBF） models were established, and evaluate formula was given based on energy and story displacement. The results revealed that the static analysis responses of story displacement, shear and the energy distribution of buckling restrained brace and the relationship of hysteretic curve are in agreement with the dynamic when the level participation ratio β between 20% and 60%. So the static analysis value can evaluate the value of seismic response accurate under strong earthquake when the frame was designed with fixed equivalent base shear method and the level participation ratio β between 20% and 60%.

• Periodical: Applied Mechanics and Materials (Volumes 368-370)
• Pages: 1578-1582
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.368-370.1578
• Online since: August 2013
• Authors: Hua Jiang, En He Bao, Rong Zeng
• Keywords: Buckling Restrained Brace (BRB), Dynamic Elastic-Plastic Analysis, Fixed Equivalent Base Shear Method, Level Participation Ratio β, Static Elastic-Plastic Analysis

References

[1] Zhou Yun . The structure of metal energy dissipation damping {M}. Wuhan：publishing house of Wuhan technology university, (2006).

[2] Kong Xiangxiong , Luo Kihai , Cheng Shaoge . The application and research of seismic behavior in plane frame with buckling restrained brace [J] . The structure of buildings ; 2010, 40（10）：7-10.

[3] NAGAO T, TAKAHATA A, BAO E H. Damage concentration in multi-story buckling restrained braced frame (BRBF)-relations with participant ratio β of BRB[C/OL]. China Earthquake Administration. Proceedings of the fourteenth World Conference on Earthquake Engineering. Beijing, China, (2008).

[4] BAO E H, NAGAO T, TAKAHATA R. Equivalent static story-shear-force distribution for multi- story BRBF with large participation ratio (β) [J]. Journal of Structural Engineering, 2009, 55：231-237.

[5] OGAWA K, TADA M. Combined non-linear analysis for plane frame (clap, ) [C]/Architectural Institute of Japan. Proc. of 17th Symposium on Computer Technology on Information Systems and Applications. Tokyo：Showa intelligence Press, 1994：79-84.

[6] Bao En-he , Yu Ai-ping , Liu Baochen , and so on. Elastoplastic analysis of multilayer buckling restrained bracing steel frame[J] , sichuan scientific research of building, 2011, 37（4）：13-17.

[7] Building Center of Japan. The seismic calculation method benchmark explanation and explanation of calculation cases based on energy balance rules [M]. Tokyo：Showa intelligence Press, 2007：76.