A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Distinct Element Modelling of the Out-of-Plane Seismic Behaviour of Masonry Walls
Abstract The out-of-plane vulnerability of perimeter walls is one of the main issues in the seismic response of historic masonry structures. Their dynamic behaviour is highly non-linear and is influenced by the discontinuous nature of the material. A range of failure modes may occur, such as onset of a mechanism, leaf separation, disaggregation, or sliding. Simplified approaches based on rigid-block dynamics may be unconservative, especially for poor-quality masonry, which is typical of a large proportion of our built heritage. Distinct element method (DEM), in which masonry is modelled as an assembly of discrete blocks and zero-thickness joints, appears suitable to simulate the dynamic response of masonry structures. In this work, DEM is used to analyse the out-of-plane bending response of two masonry walls, a two-leaf rubble stone masonry wall and a single-leaf wall in regular tuff blocks. Their seismic behaviour is simulated through non-linear dynamic analyses and compared to shake table test results for validation. DEM provides a good description of the seismic response of the walls, despite the high sensitivity to input parameters (stiffness, friction angle, tensile strength, cohesion and damping), which need to be calibrated in a suitable way.
Distinct Element Modelling of the Out-of-Plane Seismic Behaviour of Masonry Walls
Abstract The out-of-plane vulnerability of perimeter walls is one of the main issues in the seismic response of historic masonry structures. Their dynamic behaviour is highly non-linear and is influenced by the discontinuous nature of the material. A range of failure modes may occur, such as onset of a mechanism, leaf separation, disaggregation, or sliding. Simplified approaches based on rigid-block dynamics may be unconservative, especially for poor-quality masonry, which is typical of a large proportion of our built heritage. Distinct element method (DEM), in which masonry is modelled as an assembly of discrete blocks and zero-thickness joints, appears suitable to simulate the dynamic response of masonry structures. In this work, DEM is used to analyse the out-of-plane bending response of two masonry walls, a two-leaf rubble stone masonry wall and a single-leaf wall in regular tuff blocks. Their seismic behaviour is simulated through non-linear dynamic analyses and compared to shake table test results for validation. DEM provides a good description of the seismic response of the walls, despite the high sensitivity to input parameters (stiffness, friction angle, tensile strength, cohesion and damping), which need to be calibrated in a suitable way.
Distinct Element Modelling of the Out-of-Plane Seismic Behaviour of Masonry Walls
Meriggi, Pietro (author) / Pantò, Bartolomeo (author) / Santis, Stefano (author) / Mordanova, Anna (author) / Felice, Gianmarco (author)
2019-01-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
Distinct Element Modelling of Masonry Walls under Out-Of-Plane Seismic Loading
| Taylor & Francis Verlag | 2019
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