Experimental Fragility Analysis of Suspension Ceiling Systems

The seismic response of suspended ceiling systems that were shaken at the University at Buffalo; University of Nevada, Reno; and E-Defense facilities is critically assessed in this paper. After presenting a brief description of each experiment, the most repetitive damage observations in all experiments are discussed. Fragility curves are developed for ceiling perimeter connectors, supporting elements, and overall performance of ceiling systems by using 346 combinations of ceiling configurations and shake intensities. The key findings of these curves are the insufficient support of the 7/8-in. wall angles, unconservative code design capacity of connections for supporting elements, and early damage of ceiling systems because of ceiling-piping interaction. Acceleration amplification factors of ceiling systems with respect to suspending floor are computed. The amplification factors prescribed by the code were found to be unconservative due to the pounding of panels to the ceiling grids and deck vibration in a vertical direction.

[1]  Gilberto Mosqueda,et al.  Performance of Nonstructural Components during the 27 February 2010 Chile Earthquake , 2012 .

[2]  Keri L. Ryan,et al.  Computational Simulation of a Full-Scale, Fixed-Base, and Isolated-Base Steel Moment Frame Building Tested at E-Defense , 2014 .

[3]  Siavash Soroushian,et al.  System-Level Experiments on Ceiling/Piping/Partition Systems at UNR- NEES Site , 2014 .

[4]  Gilberto Mosqueda,et al.  Seismic Response of Ceiling/Sprinkler Piping Nonstructural Systems in NEES TIPS/NEES Nonstructural/NIED Collaborative Tests on a Full Scale 5-Story Building , 2012 .

[5]  Robert E. Bachman,et al.  Creating Fragility Functions for Performance-Based Earthquake Engineering , 2007 .

[6]  Vincenzo Pentangelo.  SEISMIC ASSESSMENT OF SUSPENDED CEILING SYSTEMS , 2010 .

[7]  Anne Watson,et al.  Architecture, Building Contents, and Building Systems , 1990 .

[8]  C. V. Anderson,et al.  The Federal Emergency Management Agency (FEMA) , 2002 .

[9]  A. Zaghi,et al.  Seismic Fragility of Suspended Ceiling Systems , 2012 .

[10]  Arash E. Zaghi,et al.  Design of a Test-Bed Structure for Shake Table Simulation of the Seismic Performance of Nonstructural Systems , 2011 .

[11]  C. Allin Cornell,et al.  Probabilistic Basis for 2000 SAC Federal Emergency Management Agency Steel Moment Frame Guidelines , 2002 .

[12]  Andre Filiatrault,et al.  Analytical Seismic Fragility Analyses of Fire Sprinkler Piping Systems with Threaded Joints , 2015 .

[13]  Edward Cohen,et al.  Minimum Design Loads for Buildings and Other Structures , 1990 .

[14]  Arash E. Zaghi,et al.  Response of a 2-story test-bed structure for the seismic evaluation of nonstructural systems , 2016, Earthquake Engineering and Engineering Vibration.

[15]  Andrew S. Whittaker,et al.  Seismic Fragility of Suspended Ceiling Systems , 2007 .

[16]  Eduardo A. Fierro,et al.  Reducing the risks of nonstructural earthquake damage : A practical guide , 1994 .

[17]  Tomohiro Sasaki,et al.  Seismic Simulation of an Integrated Ceiling-Partition Wall-Piping System at E-Defense. I: Three-Dimensional Structural Response and Base Isolation , 2016 .

[18]  George C. Yao.  SEISMIC PERFORMANCE OF DIRECT HUNG SUSPENDED CEILING SYSTEMS , 2000 .

[19]  Ki Pung Ryu.  Modeling and seismic evaluation of nonstructural components: Testing frame for experimental evaluation of suspended ceiling systems , 2010 .

[20]  Amir S. J. Gilani,et al.  Seismic Evaluation of Suspended Ceiling Systems using Static and Dynamic Procedures , 2013 .

[21]  Reginald DesRoches,et al.  Seismic fragility methodology for highway bridges using a component level approach , 2006 .

[22]  A. Filiatrault,et al.  Full Scale Dynamic Testing of Large Area Suspended Ceiling System , 2012 .