The paper addresses the problem of evaluation of strength of masonry walls, within the context of seismic assessment of existing buildings. In-plane behaviour of full scale stone and brick masonry panels has been studied under monotonic diagonal-compression and shear-compression loading in quasi-static test facility. The experimental research was carried out in Abruzzi and Umbria since the 1990s, and it represents an important database for mechanical characterization of some widely used masonry walls in these seismic regions. The monotonic shear-compression and diagonal compression tests were performed under load control and experimental data have provided information about in-plane behaviour of un-reinforced masonry (URM) walls. Failure modes, shear strength, displacement capacity and post-peak performance are discussed. A presentation is also given of the results of a F.E. investigation for shear strength evaluation of masonry walls. F.E. modeling non-linear procedure (available in code Ansys) was used for the representation of masonry panels. The numerical simulations are compared with experimental results and the reliability of the different finite element models is discussed. These models are used for the simulation of diagonal compression and shear-compression tests on masonry panels.
Evaluation of shear strength of masonry panels through different experimental analyses
BORRI, Antonio;CASTORI, GIULIO;CORRADI, Marco
2012
Abstract
The paper addresses the problem of evaluation of strength of masonry walls, within the context of seismic assessment of existing buildings. In-plane behaviour of full scale stone and brick masonry panels has been studied under monotonic diagonal-compression and shear-compression loading in quasi-static test facility. The experimental research was carried out in Abruzzi and Umbria since the 1990s, and it represents an important database for mechanical characterization of some widely used masonry walls in these seismic regions. The monotonic shear-compression and diagonal compression tests were performed under load control and experimental data have provided information about in-plane behaviour of un-reinforced masonry (URM) walls. Failure modes, shear strength, displacement capacity and post-peak performance are discussed. A presentation is also given of the results of a F.E. investigation for shear strength evaluation of masonry walls. F.E. modeling non-linear procedure (available in code Ansys) was used for the representation of masonry panels. The numerical simulations are compared with experimental results and the reliability of the different finite element models is discussed. These models are used for the simulation of diagonal compression and shear-compression tests on masonry panels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
