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Seismic Performance and Application of Sandwiched Buckling-Restrained Braces and Dual-Core Self-Centering Braces
Chung-Che Chou1,2, Ping-Ting Chung1 & Ying-Chuan Chen1
1Dept. of Civil Engineering, National Taiwan University,
No. 1, Roosevelt Road Section 4, Daan District, Taipei City 10617, Taiwan
2Research Fellow, National Center for Research on Earthquake Engineering,
200, Sec. 3, HsinHai Rd., Taipei 10668, Taiwan
Email: cechou@ntu.edu.tw
Abstract. This paper first presents cyclic test results and the application of the proposed sandwiched buckling-restrained brace (BRB). The proposed BRB can be easily disassembled in the field. This provides an opportunity for inspection of the core after a large earthquake. The mechanics and cyclic behavior of a novel steel dual-core self-centering brace (SCB) are then proposed and introduced, followed by the testing of a dual-core SCB in order to evaluate its cyclic performance. Both braces achieve an excellent target lateral drift performance of up to 2.5%, thus satisfying the seismic requirement by the AISC Seismic Provisions 2010.
Keywords: cyclic test; dual-core self-centering brace (SCB); sandwiched buckling-restrained brace (BRB).
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