Blast Resistant Design

Full Session with Abstracts

338132-3 - Energy Absorbing Anchors Extend the Effectiveness of Protective Facade Solutions

Saturday, April 21
10:00 AM - 11:30 AM
Location: 202CD

Abstract
Protective façade upgrades effectively match the performance of the debris mitigating glass with the strength of the supporting frames; however, the anchorage forces these systems develop may overwhelm the capacity of the surrounding walls. This is particularly true for hard mounted façade systems that are anchored into masonry or steel stud walls. Window anchors are relatively stiff and typically resist the high frequency components of force through brittle response modes. A ductile window attachment system was developed to limit the magnitude of force and dissipate large amounts of blast energy through controlled deformation and localized damage. The energy absorbing anchor has the collateral benefit of increasing the effectiveness of the debris mitigating glass and supporting frame.
The authors will demonstrate the effectiveness of debris mitigating energy absorbing anchors, show correlation between empirical test data and advanced finite element analysis and provide guidance for designing an energy absorbing anchorage system. A variety of successful applications of the energy absorbing anchor technology will be presented for the protective upgrade of existing façade systems, the design of punched windows in new construction and the development of high performance curtainwalls.

Robert Smilowitz

Senior Principal
Thornton Tomasetti

Structural engineer with specialty in protective design

Presentation(s):

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338132-3 - Energy Absorbing Anchors Extend the Effectiveness of Protective Facade Solutions



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