A dynamic analysis of the rocking motion and overturning collapse of walls in old masonry buildings weakly linked to each other is tackled. This approach concerns the motion of a block model undergoing large displacements and small rotations and having an elastic response in the neighborhood of the free standing configuration. Furthermore, the presence of adjoining structural elements, such as either floor diaphragms or masonry walls, is taken into account by means of a unilateral elastic restraint. The model response is analyzed with reference to free vibrations and to both single-pulse and seismic horizontal accelerations imposed at the base. The results obtained are discussed with reference to the motion dependence on the horizontal unilateral restraint and on the introduced regularizing elastic phase.
On the dynamic approach to the out of plane seismic collapse of masonry walls
GAMBAROTTA, LUIGI;MONETTO, ILARIA
1999-01-01
Abstract
A dynamic analysis of the rocking motion and overturning collapse of walls in old masonry buildings weakly linked to each other is tackled. This approach concerns the motion of a block model undergoing large displacements and small rotations and having an elastic response in the neighborhood of the free standing configuration. Furthermore, the presence of adjoining structural elements, such as either floor diaphragms or masonry walls, is taken into account by means of a unilateral elastic restraint. The model response is analyzed with reference to free vibrations and to both single-pulse and seismic horizontal accelerations imposed at the base. The results obtained are discussed with reference to the motion dependence on the horizontal unilateral restraint and on the introduced regularizing elastic phase.
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