Shear Failure Behavior of Y-Eccentrically Brace in RC Frame Structures under Earthquake Action

Abstract:

In order to study the mechanical characteristics and the shear failure behavior under earthquake action, a single-storey single-span RC frame structure strengthened with Y-eccentrically brace were designed and manufactured to be 1/3 scale. The pseudo-dynamic testing method was carried out under El-Centro earthquake action with different peak acceleration adjusted by Code for Seismic Design of Buildings in mainland China. The testing result indicates that RC frame structure strengthened with Y-eccentrically steel brace presents perfect seismic performance under strong earthquake action, at one time, the seismic performance maybe affected by the length of outsourcing steel at the joint between energy dissipation element of eccentric steel brace and RC frame beam. The joint should be considerably designed to make sure that shear failure can firstly occur in energy dissipation element.

• Periodical: Advanced Materials Research (Volumes 639-640)
• Pages: 866-869
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.639-640.866
• Online since: January 2013
• Authors: Da Peng Wang, An Lin Yu
• Keywords: Energy Dissipation Element, Pseudo-Dynamic Testing, Shear Failure, Y-Eccentrically Steel Brace

References

[1] Roeder C.W and Popov E.P. Eccentrically braced steel frames for earthquakes. Journal of Structural Div ASCE. 104 (1978) 391-412.

DOI: 10.1061/jsdeag.0004875

[2] Keith D.H and Popov E.P. Characteristices of eccentrically braced frames. Journal of Structural Engineering.112(1984).

[3] Qian JR, Chen MS, Zhang TS, et al. The pseudo-dynamic testing of eccentrically braced steel frames. Earthquake Resistance Engineering. 1 (1992) 15-18. (In Chinese)

[4] Yu AL. The seismic performance testing of EK and Y braces. Journal of Xi'an University of Achiteture and Technology. 22 (1990) 253-260. (In Chinese)

[5] Yu AL, Zhao BC, Li RD, et al. Experimental study on hysteretic behavior of K and Y-eccentrically braced steel frames. Building Structure. 40 (2010) 9-12. (In Chinese)

[6] Yu AL, Zhao BC, Li RD, et al. Experimental study on effect of link beam web depth-thickness ratio on energy-dissipation ofY-shaped eccentrically braced steel frames. Journal of Earthquak Engineering and Engineering Vibration. 29(2009) 143-148. (In Chinese)

[7] Aristizabal-Ochoa J.D. Disposable knee bracing: improvement in seismic design of steel frames. Journal of Structural Engineering. 112 (1986) 1544-1552.

DOI: 10.1061/(asce)0733-9445(1986)112:7(1544)

[8] Balendra T, Yu CY and Xiao Y. An economical structural system for wind and earthquake loads. Engineering Structures. 23 (2001) 491-501.

DOI: 10.1016/s0141-0296(00)00061-4