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Earthquakes and Structures Volume 8, Number 1, January 2015 , pages 101-132 DOI: https://doi.org/10.12989/eas.2015.8.1.101 |
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Prediction of seismic cracking capacity of glazing systems |
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William C. O\'Brien Jr., Ali M. Memari and M.EERI
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| Abstract | ||
| This research formulates a closed-form equation to predict a glass panel cracking failure drift for several curtain wall and storefront systems. An evaluation of the ASCE 7-10 equation for Dclear, which is the drift corresponding to glass-to-frame contact, shows that the kinematic modeling assumed for formulation of the equation is sound. The equation proposed in this paper builds on the ASCE equation and offers a revision of that equation to predict drift corresponding to cracking failure by considering glazing characteristics such as glass type, glass panel configuration, and system type. The formulation of the proposed equation and corresponding analyses with the ASCE equation is based on compiled experimental data of twenty-two different glass systems configurations tested over the past decade. A final comparative analysis between the ASCE equation and the proposed equation shows that the latter can predict the drift corresponding to glass cracking failure more accurately. | ||
| Key Words | ||
| curtain wall; drift; glass-to-frame clearance; glass failure; glass panel cracking; prediction; seismic capacity, storefront | ||
| Address | ||
| William C. O\'Brien Jr.: Architectural Engineer, Wiss, Janney, Elstner Associates, Inc., 10 South LaSalle Street, Suite 2600, Chicago, IL 60603, USA Ali M. Memari and M.EERI: Hankin Chair in Residential Building Construction, Department of Architectural Engineering, Department of Civil and Environmental Engineering, Penn State University, 219 Sackett Building, University Park, PA 16802, USA | ||