HYBRID SIMULATION OF A WOOD SHEAR WALL FRAME

摘要

Hybrid simulations of a wood shear wall frame were conducted at the newly constructed Structural Engineering Laboratory at the University of Alabama. Preliminary cyclic testing and single degree of freedom pseudodynamic simulations were conducted to characterize the testing system and develop hybrid simulation control methods. Then full scale hybrid simulations were conducted of a two story wood frame with a numerical second story a physical first story of a single 4.88m wood shear wall with typical door and window openings. The lateral displacement response was determined using the Newmark integration algorithm and applied to the physical first story with the restoring force measured at the interface fed back to the numerical simulation of the second story. The experiments served two purposes: 1) to characterize the highly nonlinear seismic behavior of woodframe construction; and 2) to verify the developed pseudodynamic hybrid simulation controllers and their application to wood frame structures for eventual expansion to full buildings since this is the first time hybrid simulation of a wood frame structure has been achieved. A detailed overview of the experimental setup, procedure, and results are presented herein.