Seismic Performance of Steel MRF Structures with Nonlinear Viscous Dampers from Real-Time Hybrid Simulations

Abstract:

Real-time hybrid earthquake simulations (RTHS) were performed on steel moment-resisting frame (MRF) structures with nonlinear viscous dampers. The test structures for the RTHS contain a moment-resisting frame (MRF), a frame with nonlinear viscous dampers (DBF), and a gravity load system with associated seismic mass and gravity loads. The MRFs have reduced beam section beam-to-column connections and are designed for 100%, 75%, and 60%, respectively, of the base shear strength required by ASCE 7-10. RTHS were performed to evaluate the seismic performance of these MRF structures. Two phases of RTHS were conducted: (Phase-1) the DBF is the experimental substructure in the laboratory; and (Phase-2) the DBF with the MRF is the experimental substructure. Results from the two phases of RTHS are evaluated. The evaluation shows that the RTHS provide a realistic and accurate simulation of the seismic response of the test structures. The evaluation also shows that steel MRF structures designed with reduced strength and with nonlinear viscous dampers can have excellent seismic performance.

• Periodical: Key Engineering Materials (Volume 763)
• Pages: 967-974
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.763.967
• Online since: February 2018
• Authors: Bai Ping Dong, Richard Sause*, James M. Ricles
• Keywords: Experimental Substructures, Moment Resisting Frames, Nonlinear Seismic Response, Nonlinear Viscous Dampers, Real-Time Hybrid Simulation, Seismic Performance, Steel Structure

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