The paper offers a contribution to the issue of modelling and analysis of architectural heritage ... more The paper offers a contribution to the issue of modelling and analysis of architectural heritage through the discussion of an illustrative case study: the Italian Medieval Castle of San Niccolò (Toscana, Italy). In the past the castle exhibited a wide damage, and to prevent its ruination, restoration works were executed in the eighties of the last century. Using the finite element technique, a 3D numerical model of the castle has been built that has been used to identify the main sources of the damages and assess the effectiveness of the restoration works. The paper shows that advanced numerical analyses could offer significant information both for the understanding of the causes of existing damage and the minimum and adequate design of strengthening. The understanding of the structural behaviour can indeed reduce the extent of the remedial measures, offering efficient strengthening tools.
In this paper a Romanesque masonry church is analysed in order to assess its structural behaviour... more In this paper a Romanesque masonry church is analysed in order to assess its structural behaviour and its seismic vulnerability with respect to the actual state of conservation. Starting from a specific case study, a contribution to the issue of modelling and analysis of monumental masonry buildings under seismic action is provided. A finite element methodology for the static and dynamic nonlinear analysis of historical masonry structures is described and applied to the case study. A quasi-static approach (the seismic coefficient method) for the evaluation of the seismic loads has been used (as indeed is common in many analyses of the seismic behaviour of masonry structures). The comparison demand vs. capacity confirms the susceptibility of this type of building to extensive damage and possibly to collapse, as frequently observed. Moreover the actual efficiency of current techniques for repairing and strengthening are analyzed in order to evaluate their benefits. The analysis of repairing and strengthening techniques show the effectiveness of the usual structural reinforcement in terms of increased seismic capacity. The paper advocates that significant information can be obtained from advanced numerical analysis, namely with respect to the understanding of existing damage and to the minimum and adequate design of strengthening. A clear understanding of the structural behaviour and reliable strengthening, based on sophisticated tools of structural analysis, can therefore reduce the extent of the remedial measures in the restoration of ancient structures.
The paper offers a contribution to the issue of modelling and analysis of architectural heritage ... more The paper offers a contribution to the issue of modelling and analysis of architectural heritage through the discussion of an illustrative case study: the Italian Medieval Castle of San Niccolò (Toscana, Italy). In the past the castle exhibited a wide damage, and to prevent its ruination, restoration works were executed in the eighties of the last century. Using the finite element technique, a 3D numerical model of the castle has been built that has been used to identify the main sources of the damages and assess the effectiveness of the restoration works. The paper shows that advanced numerical analyses could offer significant information both for the understanding of the causes of existing damage and the minimum and adequate design of strengthening. The understanding of the structural behaviour can indeed reduce the extent of the remedial measures, offering efficient strengthening tools.
In this paper a Romanesque masonry church is analysed in order to assess its structural behaviour... more In this paper a Romanesque masonry church is analysed in order to assess its structural behaviour and its seismic vulnerability with respect to the actual state of conservation. Starting from a specific case study, a contribution to the issue of modelling and analysis of monumental masonry buildings under seismic action is provided. A finite element methodology for the static and dynamic nonlinear analysis of historical masonry structures is described and applied to the case study. A quasi-static approach (the seismic coefficient method) for the evaluation of the seismic loads has been used (as indeed is common in many analyses of the seismic behaviour of masonry structures). The comparison demand vs. capacity confirms the susceptibility of this type of building to extensive damage and possibly to collapse, as frequently observed. Moreover the actual efficiency of current techniques for repairing and strengthening are analyzed in order to evaluate their benefits. The analysis of repairing and strengthening techniques show the effectiveness of the usual structural reinforcement in terms of increased seismic capacity. The paper advocates that significant information can be obtained from advanced numerical analysis, namely with respect to the understanding of existing damage and to the minimum and adequate design of strengthening. A clear understanding of the structural behaviour and reliable strengthening, based on sophisticated tools of structural analysis, can therefore reduce the extent of the remedial measures in the restoration of ancient structures.
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Papers by Andrea Vignoli