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Masonry subjected to semi-cyclic compression: Inelastic response modelling
Highlights A macroscopic model for masonry subjected to semi-cyclic compression is presented. Model combines conventional model for masonry with non-linear model for block-mortar interface. Interface model consists of an elastic, a plastic and an elastoplastic element connected in series. Model parameters are determined from author’s own tests on masonry with inclined bed joints. Presented model was able to capture experimental behaviour satisfactorily.
Abstract A series of load tests on unreinforced masonry elements (triplets and wallettes with inclined bed joints) subjected to semi-cyclic compression have been performed in order to investigate the response of masonry under such loading conditions. The specimens exhibited inelastic and extremely nonlinear response and substantially different behaviour during the loading, unloading and reloading phases. Further investigations revealed that the observed behaviour was governed by the response of the block-mortar interfaces. A new mechanical model has been developed, which combines the conventional stress–strain model for the masonry with a non-linear model describing the response of the block-mortar interfaces. The model was calibrated using the Monte-Carlo simulation method and validated against the semi-cyclic compression tests on masonry specimens. The model developed is expected to improve significantly the simulation of the force–displacement response of unreinforced masonry walls subjected to seismic loading.
Masonry subjected to semi-cyclic compression: Inelastic response modelling
Highlights A macroscopic model for masonry subjected to semi-cyclic compression is presented. Model combines conventional model for masonry with non-linear model for block-mortar interface. Interface model consists of an elastic, a plastic and an elastoplastic element connected in series. Model parameters are determined from author’s own tests on masonry with inclined bed joints. Presented model was able to capture experimental behaviour satisfactorily.
Abstract A series of load tests on unreinforced masonry elements (triplets and wallettes with inclined bed joints) subjected to semi-cyclic compression have been performed in order to investigate the response of masonry under such loading conditions. The specimens exhibited inelastic and extremely nonlinear response and substantially different behaviour during the loading, unloading and reloading phases. Further investigations revealed that the observed behaviour was governed by the response of the block-mortar interfaces. A new mechanical model has been developed, which combines the conventional stress–strain model for the masonry with a non-linear model describing the response of the block-mortar interfaces. The model was calibrated using the Monte-Carlo simulation method and validated against the semi-cyclic compression tests on masonry specimens. The model developed is expected to improve significantly the simulation of the force–displacement response of unreinforced masonry walls subjected to seismic loading.
Masonry subjected to semi-cyclic compression: Inelastic response modelling
Mojsilović, Nebojša (author)
2020-07-05
Article (Journal)
Electronic Resource
English
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