Title: Performance Evaluation of Semi-rigid Steel Frames Using Hybrid Simulation (NEES-2010-0981)

Year Of Curation: 2014

Description: The widespread and unexpected damage to welded connections during recent earthquakes led to the investigation of alternatives for the construction of steel frames in seismic areas. Bolted semi-rigid connections have been recognized as an attractive alternative to welded connections. However, existing knowledge on the behavior of the connection is either from testing of beam- to-column subassemblies under idealized load and boundary conditions, or from analytical studies. In addition, the system-level experimental behavior of semi-rigidly connected frames using real earthquake motions to conclusively verify the full potential of semi-rigidity (implying also partial-strength) in earthquake resistance application is lacking. To this end, an advanced hybrid simulation approach for the seismic assessment of steel frames with semi-rigid connections was proposed and successfully completed. Furthermore, nonlinear dynamic response-history analyses of semi-rigid frames with varying design parameters were conducted to evaluate the system performance under seismic events. The results of the hybrid simulation and the parametric studies are used to quantify various fundamental code parameters needed for the seismic design of structures.

Award: MAE Center

PIs & CoPIs: Amr Elnashai

Dates: April 24, 2009 - August 04, 2010

Organizations: University of Illinois at Urbana-Champaign, IL, United States

Facilities: University of Illinois at Urbana-Champaign, IL, United States

Sponsor: MAE Center

Keywords:

Publications:

• Amr Elnashai (2017), "Performance Evaluation of Semi-rigid Steel Frames Using Hybrid Simulation (NEES-2010-0981)," https://datacenterhub.org/deedsdv/publications/view/396.