Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering
The material deterioration of an unreinforced stone masonry (URSM) building, due to subsequent dynamic loadings of increasing intensity on a shaking table, is investigated by means of inverse engineering, i.e. calibrating a finite element (FE) model to the experimental response data. The mechanical...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/2075-5309/12/8/1235 |
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| author | Leonidas Alexandros S. Kouris Andrea Penna Guido Magenes |
| author_facet | Leonidas Alexandros S. Kouris Andrea Penna Guido Magenes |
| author_sort | Leonidas Alexandros S. Kouris |
| collection | DOAJ |
| description | The material deterioration of an unreinforced stone masonry (URSM) building, due to subsequent dynamic loadings of increasing intensity on a shaking table, is investigated by means of inverse engineering, i.e. calibrating a finite element (FE) model to the experimental response data. The mechanical properties of the structure were initially estimated by preliminary characterisation tests. A two-storey full scale URSM building was tested on a shaking table using a sequential testing procedure of stationary and strong motion vibrations. The building was submitted to five uniaxial time-histories with gradually increasing intensity on a shaking table at the EUCENTRE laboratory (Pavia, Italy) up to a near collapse damage state, each one followed by a stationary vibration test. A frequency domain calibration was carried out to extract the mechanical properties of the equivalent elastic model. To this end, the stationary measurements were used to build up the state-space model. On the other hand, a recognition model was employed using the finite element method (FEM), whose stiffness and mass matrices were used to derive the corresponding analytical state-space model, which was compared to the experimental one. The calibration of the model against the experimental dynamic results includes increased complexity and high computational effort. Through an iterative optimisation trial and error procedure, the mechanical properties of masonry and the shear modulus of the flexible diaphragm of the structure for each test phase were derived. It is shown that the deterioration is more intense for the shear modulus of the walls compared to their elastic modulus. The ratio of the in-plane shear to the elastic modulus decreases substantially. The deterioration of the shear modulus of the timber floors is comparable with those of masonry walls. |
| first_indexed | 2024-03-09T13:44:00Z |
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| id | doaj.art-2df9c9f27f5c4c9cb3a50011d18adeca |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T13:44:00Z |
| publishDate | 2022-08-01 |
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| series | Buildings |
| spelling | doaj.art-2df9c9f27f5c4c9cb3a50011d18adeca2023-11-30T21:02:48ZengMDPI AGBuildings2075-53092022-08-01128123510.3390/buildings12081235Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse EngineeringLeonidas Alexandros S. Kouris0Andrea Penna1Guido Magenes2Institute for Advanced Studies, IUSS Pavia, p.za della Vittoria 15, IT-27100 Pavia, ItalyDepartment of Civil Engineering and Architecture (DICAr), University of Pavia, v. Ferrata 3, IT-27100 Pavia, ItalyDepartment of Civil Engineering and Architecture (DICAr), University of Pavia, v. Ferrata 3, IT-27100 Pavia, ItalyThe material deterioration of an unreinforced stone masonry (URSM) building, due to subsequent dynamic loadings of increasing intensity on a shaking table, is investigated by means of inverse engineering, i.e. calibrating a finite element (FE) model to the experimental response data. The mechanical properties of the structure were initially estimated by preliminary characterisation tests. A two-storey full scale URSM building was tested on a shaking table using a sequential testing procedure of stationary and strong motion vibrations. The building was submitted to five uniaxial time-histories with gradually increasing intensity on a shaking table at the EUCENTRE laboratory (Pavia, Italy) up to a near collapse damage state, each one followed by a stationary vibration test. A frequency domain calibration was carried out to extract the mechanical properties of the equivalent elastic model. To this end, the stationary measurements were used to build up the state-space model. On the other hand, a recognition model was employed using the finite element method (FEM), whose stiffness and mass matrices were used to derive the corresponding analytical state-space model, which was compared to the experimental one. The calibration of the model against the experimental dynamic results includes increased complexity and high computational effort. Through an iterative optimisation trial and error procedure, the mechanical properties of masonry and the shear modulus of the flexible diaphragm of the structure for each test phase were derived. It is shown that the deterioration is more intense for the shear modulus of the walls compared to their elastic modulus. The ratio of the in-plane shear to the elastic modulus decreases substantially. The deterioration of the shear modulus of the timber floors is comparable with those of masonry walls.https://www.mdpi.com/2075-5309/12/8/1235inverse engineeringshaking table testunreinforced stone masonrytimber diaphragmmaterial properties calibrationelastic and shear moduli |
| spellingShingle | Leonidas Alexandros S. Kouris Andrea Penna Guido Magenes Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering Buildings inverse engineering shaking table test unreinforced stone masonry timber diaphragm material properties calibration elastic and shear moduli |
| title | Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering |
| title_full | Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering |
| title_fullStr | Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering |
| title_full_unstemmed | Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering |
| title_short | Assessment of a Full-Scale Unreinforced Stone Masonry Building Tested on a Shaking Table by Inverse Engineering |
| title_sort | assessment of a full scale unreinforced stone masonry building tested on a shaking table by inverse engineering |
| topic | inverse engineering shaking table test unreinforced stone masonry timber diaphragm material properties calibration elastic and shear moduli |
| url | https://www.mdpi.com/2075-5309/12/8/1235 |
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