Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner
Recent advances in timber construction have led to the realization of complex timber plate structures assembled with wood-wood connections. Although advanced numerical modelling tools have been developed to perform their structural analysis, limited experimental tests have been carried out on large-...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/2/413 |
| _version_ | 1817988907906629632 |
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| author | Anh Chi Nguyen Yves Weinand |
| author_facet | Anh Chi Nguyen Yves Weinand |
| author_sort | Anh Chi Nguyen |
| collection | DOAJ |
| description | Recent advances in timber construction have led to the realization of complex timber plate structures assembled with wood-wood connections. Although advanced numerical modelling tools have been developed to perform their structural analysis, limited experimental tests have been carried out on large-scale structures. However, experimental investigations remain necessary to better understand their mechanical behaviour and assess the numerical models developed. In this paper, static loading tests performed on timber plate shells of about 25 m span are reported. Displacements were measured at 16 target positions on the structure using a total station and on its entire bottom surface using a terrestrial laser scanner. Both methods were compared to each other and to a finite element model in which the semi-rigidity of the connections was represented by springs. Total station measurements provided more consistent results than point clouds, which nonetheless allowed the visualization of displacement fields. Results predicted by the model were found to be in good agreement with the measurements compared to a rigid model. The semi-rigid behaviour of the connections was therefore proven to be crucial to precisely predict the behaviour of the structure. Furthermore, large variations were observed between as-built and designed geometries due to the accumulation of fabrication and construction tolerances. |
| first_indexed | 2024-04-14T00:40:24Z |
| format | Article |
| id | doaj.art-481a46c9615840819d703962b975596a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T00:40:24Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-481a46c9615840819d703962b975596a2022-12-22T02:22:12ZengMDPI AGSensors1424-82202020-01-0120241310.3390/s20020413s20020413Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser ScannerAnh Chi Nguyen0Yves Weinand1Laboratory for Timber Constructions (IBOIS), École Polytechnique Fédérale de Lausanne, GC H2 711, Station 18, CH-1015 Lausanne, SwitzerlandLaboratory for Timber Constructions (IBOIS), École Polytechnique Fédérale de Lausanne, GC H2 711, Station 18, CH-1015 Lausanne, SwitzerlandRecent advances in timber construction have led to the realization of complex timber plate structures assembled with wood-wood connections. Although advanced numerical modelling tools have been developed to perform their structural analysis, limited experimental tests have been carried out on large-scale structures. However, experimental investigations remain necessary to better understand their mechanical behaviour and assess the numerical models developed. In this paper, static loading tests performed on timber plate shells of about 25 m span are reported. Displacements were measured at 16 target positions on the structure using a total station and on its entire bottom surface using a terrestrial laser scanner. Both methods were compared to each other and to a finite element model in which the semi-rigidity of the connections was represented by springs. Total station measurements provided more consistent results than point clouds, which nonetheless allowed the visualization of displacement fields. Results predicted by the model were found to be in good agreement with the measurements compared to a rigid model. The semi-rigid behaviour of the connections was therefore proven to be crucial to precisely predict the behaviour of the structure. Furthermore, large variations were observed between as-built and designed geometries due to the accumulation of fabrication and construction tolerances.https://www.mdpi.com/1424-8220/20/2/413timber plate structurestotal stationterrestrial laser scanningpoint cloud registrationfinite element spring model |
| spellingShingle | Anh Chi Nguyen Yves Weinand Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner Sensors timber plate structures total station terrestrial laser scanning point cloud registration finite element spring model |
| title | Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner |
| title_full | Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner |
| title_fullStr | Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner |
| title_full_unstemmed | Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner |
| title_short | Displacement Study of a Large-Scale Freeform Timber Plate Structure Using a Total Station and a Terrestrial Laser Scanner |
| title_sort | displacement study of a large scale freeform timber plate structure using a total station and a terrestrial laser scanner |
| topic | timber plate structures total station terrestrial laser scanning point cloud registration finite element spring model |
| url | https://www.mdpi.com/1424-8220/20/2/413 |
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