Comparing dam movements obtained with Terrestrial Laser Scanner (TLS) data against direct pendulums records/Comparación de los movimientos de una presa obtenidos con datos de Láser Escáner Terrestre (TLS) frente a los registros de los péndulos directos

The results of the study carried out in a gravity-arch dam to measure its seasonal movements with TLS are presented. These values are compared with radial movements of the dam crest recorded by direct pendulums. The results show differences, only few millimeters, being the best result one millimeter...

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Bibliographic Details
Published inRevista Facultad de Ingeniería no. 76; p. 99
Main Authors Ramos-Alcázar, Luis, Marchamalo-Sacristán, Miguel, Martínez-Marín, Rubén
Format Journal Article
LanguageEnglish
Published Medellín Universidad de Antioquía 01.09.2015
Subjects
Accuracy
Dams
Data collection
Data processing
Methods
Studies
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Summary:The results of the study carried out in a gravity-arch dam to measure its seasonal movements with TLS are presented. These values are compared with radial movements of the dam crest recorded by direct pendulums. The results show differences, only few millimeters, being the best result one millimeter discrepancy. The factors that have been considered are the precision and accuracy of the equipment, distance and angle of incidence of the laser beam, the density of the point cloud and the size of the triangles of the meshes. Considerations about density of point clouds and size of triangular meshes are made. In this study, a 7 cm distance between points and a 20 cm mesh size have given good results. Finally, a methodology is proposed to compare by reference to one of the meshes.
ISSN:0120-6230
2422-2844