ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2/W2, 221-227, 2017
https://doi.org/10.5194/isprs-annals-IV-2-W2-221-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
 
16 Aug 2017
MODELLING FROM THE PAST: THE LEANING SOUTWEST TOWER OF CAERPHILLY CASTLE 1539-2015
O. E. C. Prizeman1, V. Sarhosis2, A. M. D’Alri3, C. J. Whitman1, and G. Muratore4 1Welsh School of Architecture, Cardiff University, Bute Building, King Edward VII Avenue, Cardiff, CF10 3NB, UK
2School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
3Dept. of Civil, Chemical, Environmental, and Materials Engineering (DICAM), University of Bologna, V.le Risorgimento 2, Bologna 40136, Italy
4Mediterranean University of Reggio Calabria Mediterranean University of Reggio Calabria Salita Melissari - 89124 Reggio Calabria, Italy
Keywords: Masonry, Tower, Point Cloud, Numerical Modelling, Terrestrial Laser Scanning Abstract. Caerphilly Castle (1268-70) is the first concentric castle in Britain and the second largest in the UK. The dramatic inclination of its ruinous south west tower has been noted since 1539. Comparing data from historical surveys and a terrestrial laser scan undertaken in 2015, this paper seeks to review evidence for the long-term stability of the tower. Digital documentation and archival research by architects is collated to provide data for structural analysis by engineers. A terrestrial laser scan was used to create a detailed three dimensional finite element model to enable structural analysis of the current shape of the tower made by tetrahedral elements. An automated strategy has been implemented for the transformation of the complex three dimensional point cloud into a three dimensional finite element model. Numerical analysis has been carried out aiming at understanding the main structural weaknesses of the tower in its present condition. Comparisons of four sets of data: 1539, 1830, 1870 and 2015 enabled us to determine change albeit between very different methods of measurement.
Conference paper (PDF, 1698 KB)


Citation: Prizeman, O. E. C., Sarhosis, V., D’Alri, A. M., Whitman, C. J., and Muratore, G.: MODELLING FROM THE PAST: THE LEANING SOUTWEST TOWER OF CAERPHILLY CASTLE 1539-2015, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2/W2, 221-227, https://doi.org/10.5194/isprs-annals-IV-2-W2-221-2017, 2017.

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