12/6/2012 f a D-BNC ding tt。 tory B Joel C Supplemental Damping Expected Major Outcomes nic response and damage data for a b Table 4-:Categeries of passivs enerey dissinating srster Supplemental Damping Supplemental Damping nsc时motall 医 igue 41 Exam ADAS Da 9 12/6/2012 9 Earthquake and Post￾Earthquake Fire Testing of a Full-scale 5-story Building outfitted with Nonstructural Components on the World’s Largest Outdoor Shake Table PI: Tara C. Hutchinson, Professor Co-PI: Jose Restrepo, Professor Co-PI: Joel Conte, Professor University of California, San Diego Overall Scope: UCSD-BNCS Project (bncs.ucsd.edu)  Centerpiece of Project:Three-phased full-scale test program conducted on a 5-story building-NCS system  @Largest outdoor shake table in the world (nees.ucsd.edu) 50 Summary of Major NCSs:  Egress systems:  Operable Elevator  Stairs  Facades:  Concrete cladding  Balloon framing  Hospital equipment  Roof mounted equipment  Sprinkler and riser systems  Ceilings  Interior partition walls Hospital Floor HVAC Facades Expected Major Outcomes  Seismic response and damage data for a broad range of nonstructural systems placed in a full-scale, building environment (system-level behavior):  Landmark data set for the engineering community  Numerical model validation & improvement  Design code evaluation & improvement  Improvement of construction practices and methods 51 Structural rebar fracture Elevator door distortion Stair detachment Base isolation performance Balloon framing clip detachment Course Seminar, Tongji University, December 12, 2012 Supplemental Damping • Supplemental damping is achieved by adding devices which are external or internal to the seismic-force resisting system • Devices are characterized by their force-deformation behavior Course Seminar, Tongji University, December 12, 2012 Supplemental Damping • Metallic damper dissipates energy by yielding of sacraficial metal pieces. • Hourglass shape of steel plates allows for distribution of plastic strains throughout plate due to bending Course Seminar, Tongji University, December 12, 2012 Supplemental Damping • Example applications of metallic dampers