Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 51, Number 1, July10 2014, pages 141-162
DOI: http://dx.doi.org/10.12989/sem.2014.51.1.141
 
FE assessment of dissipative devices for the blast mitigation of glazing facades supported by prestressed cables
Claudio Amadioa and Chiara Bedon

 
Abstract     [Full Text]
    The paper focuses on the dynamic response of a blast-invested glass-steel curtain wall supported by single-way pretensioned cables. In order to mitigate the critical components of the facade from severe structural damage, an innovative system able to absorb and dissipate part of the blast-induced stresses in the critical facade components is proposed. To improve the blast reliability of the studied glazing system, specifically, rigid-plastic and elastoplastic devices are introduced at the base and at the top of the vertical bearing cables. Several combinations and mechanical calibrations of these devices are numerically investigated and the most structurally and economically advantageous solution is identified. In conclusion, a simple analytical formulation totally derived from energetic considerations is also suggested for a preliminary estimation of the maximum dynamic effects in single-way cable-supported facades subjected to high-level blast loads.
 
Key Words
    single-way cable-supported facade; explosions; dissipative devices; energy approach; nonlinear dynamic simulations
 
Address
Claudio Amadioa and Chiara Bedon : Department of Engineering and Architecture, University of Trieste, Piazzale Europa 1, 34127 Italy
 

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