Experimental investigation on steel framed structure seismic performance enhancement with multi-yielding oval plate dampers
Trung T. Dang,Hsieh-Lung Hsu,Indra R. Saputro,Alfin Suprayugo,I. P. Ellsa Sarassantika
Abstract
This study investigated the performance of a novel energy dissipation device, namely Oval plate damper (OPD), and its effectiveness in structural seismic performance enhancement. The proposed OPD and corresponding brace system were designed to effectively enhance the member deformation capacity to resolve the insufficient deformability in traditional braces, and simultaneously upgrade the energy dissipation capability. Cyclic loading tests on OPD-Braces with various energy dissipation plate geometries and frames with and without the proposed OPD Braces, respectively, were conducted. It was found from the brace test results that adequate strength, stiffness, equivalent viscous damping and significant energy dissipation were simultaneously achieved in OPD-Braces. Six yielding zones were successfully developed in the OPD to effectively dissipate energy. The maximum equivalent viscous damping in the OPD-Braces was approximately 36.18% to 39.71%, respectively. Results from frame cyclic loading tests demonstrated that significant enhancements in strength, elastic stiffness and energy dissipation were achieved in frames equipped with the proposed OPD-Braces, up to 1.93, 2.38 and 2.04 times, respectively, those of the special moment frame. These results justified the applicability of the proposed OPD-Brace to structural seismic performance upgrading.
Key Words
energy dissipation; multi-yielding; OPD-Brace; oval plate damper; seismic performance
Address
Trung T. Dang — Dept. of Civil Engineering, National Central University, Chung-Li, Taoyuan 32054, Taiwan
Hsieh-Lung Hsu — Dept. of Civil Engineering, National Central University, Chung-Li, Taoyuan 32054, Taiwan
Indra R. Saputro — 1)Dept. of Civil Engineering, National Central University, Chung-Li, Taoyuan 32054, Taiwan 2)Dept. of Civil Engineering, Universitas Jenderal Soedirman, Purwokerto, Central Java 53122, Indonesia
Alfin Suprayugo — 1)Dept. of Civil Engineering, National Central University, Chung-Li, Taoyuan 32054, Taiwan 2)Dept. of Civil Engineering, Universitas Muhammadiyah Malang, Malang, East Java 65144, Indonesia
I. P. Ellsa Sarassantika — Dept. of Civil Engineering, Universitas Warmadewa, Denpasar, Bali 80239, Indonesia
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