Real-time hybrid simulation of a multi-story wood shear wall with first-story experimental substructure incorporating a rate-dependent seismic energy dissipation device

Xiaoyun Shao, John van de Lindt, Pouria Bahmani, Weichiang Pang, Ershad Ziaei, Michael Symans, Jingjing Tian and Thang Dao

Abstract

Real-time hybrid simulation (RTHS) of a stacked wood shear wall retrofitted with a rate-dependent seismic energy dissipation device (viscous damper) was conducted at the newly constructed Structural Engineering Laboratory at the University of Alabama. This paper describes the implementation process of the RTHS focusing on the controller scheme development. An incremental approach was adopted starting from a controller for the conventional slow pseudodynamic hybrid simulation and evolving to the one applicable for RTHS. Both benchmark- scale and full-scale tests are discussed to provide a roadmap for future RTHS implementation at different laboratories and/or on different structural systems. The developed RTHS controller was applied to study the effect of a rate-dependent energy dissipation device on the seismic performance of a multi-story wood shear wall system. The test specimen, setup, program and results are presented with emphasis given to inter-story drift response. At 100% DBE the RTHS showed that the multi-story shear wall with the damper had 32% less inter-story drift and was noticeably less damaged than its un-damped specimen counterpart.

Key Words

real-time hybrid simulation; wood shear wall; energy dissipation; viscous damper; time delay compensation

Address

Xiaoyun Shao: Department of Civil and Construction Engineering, Western Michigan University, Kalamazoo, MI, USA John van de Lindt and Pouria Bahmani: Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO, USA Weichiang Pang and Ershad Ziaei: Glenn Department of Civil and Environmental Engineering, Clemson University, Clemson, SC, USA Michael Symans and Jingjing Tian: Department of Civil and Environmental Engineering, Rensselaer Polytechnic InstituteTroy, NY, USA Thang Dao: Department of Civil, Construction and Environmental Engineering, The University of Alabama, Tuscaloosa, AL, USA

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