The wall pier represents the vertical element of multi-storey walls with openings, the main resistant structural components of a masonry building. Structural systems of wall piers and spandrels are required to sustain the in-plane seismic actions acting on the wall, opposing with their weights to the action of horizontal forces. The behavior of masonry constructions results to be very far from the one characterizing ductile structures, because of the lack of energy dissipation during the deformation. A strength resource of masonry structures, properly reinforced in order to avoid early local failures, consists in exhibiting rocking behavior, until a failure condition is attained. An investigation on the dynamic behavior of masonry wall piers is carried out by following Housner’s studies and properly introducing the effect of diagonal cracks, shown by typical post-earthquake cracking patterns. As a consequence, the system is characterized by the detachment of a lower triangular region that becomes ineffective during the development of the mechanism and does not oppose with its weight to the overturning. Finally, it is shown that the occurrence of diagonal cracks can be prevented by the execution of suitable retrofit interventions.

DI CARLO, F., Coccia, S., Como, M. (2017). Rocking in presence of cracking of masonry wall piers. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? International Conference on Mechanics of Masonry Structures Strengthened with Composites Materials, MuRiCo5 2017, ita [10.4028/www.scientific.net/KEM.747.678].

Rocking in presence of cracking of masonry wall piers

DI CARLO, FABIO;COCCIA, SIMONA;COMO, MARIO
2017

Abstract

The wall pier represents the vertical element of multi-storey walls with openings, the main resistant structural components of a masonry building. Structural systems of wall piers and spandrels are required to sustain the in-plane seismic actions acting on the wall, opposing with their weights to the action of horizontal forces. The behavior of masonry constructions results to be very far from the one characterizing ductile structures, because of the lack of energy dissipation during the deformation. A strength resource of masonry structures, properly reinforced in order to avoid early local failures, consists in exhibiting rocking behavior, until a failure condition is attained. An investigation on the dynamic behavior of masonry wall piers is carried out by following Housner’s studies and properly introducing the effect of diagonal cracks, shown by typical post-earthquake cracking patterns. As a consequence, the system is characterized by the detachment of a lower triangular region that becomes ineffective during the development of the mechanism and does not oppose with its weight to the overturning. Finally, it is shown that the occurrence of diagonal cracks can be prevented by the execution of suitable retrofit interventions.
International Conference on Mechanics of Masonry Structures Strengthened with Composites Materials, MuRiCo5 2017
ita
2017
Rilevanza internazionale
contributo
Settore ICAR/09 - Tecnica delle Costruzioni
English
Constant acceleration pulse; Cracking; Masonry pier walls; No tension assumption; Rocking; Seismic strength;
Intervento a convegno
DI CARLO, F., Coccia, S., Como, M. (2017). Rocking in presence of cracking of masonry wall piers. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? International Conference on Mechanics of Masonry Structures Strengthened with Composites Materials, MuRiCo5 2017, ita [10.4028/www.scientific.net/KEM.747.678].
DI CARLO, F; Coccia, S; Como, M
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/187769
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