In the framework of the MAMAS Project (“Advanced Multi-task Materials for Structural Applications in Construction”), a scientific team (CETMA, ENEA, Ferrara and Florence Universities) realised a prototypal device made by CFRP (Carbon Fibre Reinforced Polymers) strips in series with SMA (Shape Memory Alloy) NiTi wires, devoted to strengthening masonry structures when quick prompt ringing is needed to face wall overturning in the post-earthquake emergency. In fact, the fibre delamination (i.e. decrease of stiffness and load bearing ability) should be avoided, because the repair effectiveness is not guaranteed if the accumulated effect of several seismic aftershocks leads to CFRP permanent damage and subsequent failure. Thanks to the intrinsic property of super-elasticity, the SMA device provides an undamaged CFRP behaviour during all the seismic sequence, with the additional advantage of re-centring the wall subjected to out-of-plane actions. This paper describes the work from the CFRP+SMA device design to its final ositive testing.
Effects of the Boumerdes earthquake of May 21st, 2003 on the great mosque of Dellys (Algeria) / A. Abdessemed-Foufa; G. Misseri; L. Rovero. - ELETTRONICO. - (2013), pp. 0-11. (Intervento presentato al convegno Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics 2013 (VEESD 2013) tenutosi a Vienna nel 28-30 August 2013).
Effects of the Boumerdes earthquake of May 21st, 2003 on the great mosque of Dellys (Algeria)
MISSERI, GIULIA;ROVERO, LUISA
2013
Abstract
In the framework of the MAMAS Project (“Advanced Multi-task Materials for Structural Applications in Construction”), a scientific team (CETMA, ENEA, Ferrara and Florence Universities) realised a prototypal device made by CFRP (Carbon Fibre Reinforced Polymers) strips in series with SMA (Shape Memory Alloy) NiTi wires, devoted to strengthening masonry structures when quick prompt ringing is needed to face wall overturning in the post-earthquake emergency. In fact, the fibre delamination (i.e. decrease of stiffness and load bearing ability) should be avoided, because the repair effectiveness is not guaranteed if the accumulated effect of several seismic aftershocks leads to CFRP permanent damage and subsequent failure. Thanks to the intrinsic property of super-elasticity, the SMA device provides an undamaged CFRP behaviour during all the seismic sequence, with the additional advantage of re-centring the wall subjected to out-of-plane actions. This paper describes the work from the CFRP+SMA device design to its final ositive testing.File | Dimensione | Formato | |
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