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Authors
Abstract(s)
Ao longo do tempo, as construções típicas como edifícios, obras de arte, infra-estruturas, etc, sofrem danos pelas mais diversas causas, tais como: Acidentes, deformações nos solos, erros construtivos e deterioração dos materiais que compõem os revestimentos. Entre os danos mais comuns, a fissuração tem usualmente duas origens distintas, deformação estrutural ou deterioração/retracção do betão e materiais de revestimentos.
Neste trabalho, a técnica de varrimento laser 3D, já largamente utilizada no ramo da arquitectura, é explorada como ferramenta para detecção e caracterização de fissuras através da modelação de nuvens de pontos. A sua análise foi realizada através do software Mathematica e Meshlab que permitiu o tratamento da informação recolhida, a reconstrução de superfícies 3D e a recolha de informação sobre as fissuras.
Desta forma, pretende-se com este estudo desenvolver novas metodologias, mais rápidas e precisas que irão apoiar o mapeamento e diagnóstico de fissuras visando a sua reabilitação.
Abstract: Over time, typical construction such as buildings, bridges, infrastructures, amongst others, are damaged by the most diverse causes, namely: Accidents, deformations in soils and structure, construction errors and deterioration of materials that compose the coatings. Among the most common effects, cracking usually has two distinct origins, structural deformation or deterioration / shrinkage of the concrete and coating materials. In this study, the 3D laser scanning technique, already widely used in the field of architecture, is explored as a tool for detection and characterization of cracks through point clouds modelling. The analysis was performed using the Mathematica and Meshlab software that allowed the handling of collected data, the reconstruction of 3D surfaces and gathering of information regarding cracks. With this study it is intended to develop new, faster and more accurate methodologies that will support the mapping and diagnosis of cracks aiming their rehabilitation.
Abstract: Over time, typical construction such as buildings, bridges, infrastructures, amongst others, are damaged by the most diverse causes, namely: Accidents, deformations in soils and structure, construction errors and deterioration of materials that compose the coatings. Among the most common effects, cracking usually has two distinct origins, structural deformation or deterioration / shrinkage of the concrete and coating materials. In this study, the 3D laser scanning technique, already widely used in the field of architecture, is explored as a tool for detection and characterization of cracks through point clouds modelling. The analysis was performed using the Mathematica and Meshlab software that allowed the handling of collected data, the reconstruction of 3D surfaces and gathering of information regarding cracks. With this study it is intended to develop new, faster and more accurate methodologies that will support the mapping and diagnosis of cracks aiming their rehabilitation.
Description
Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Civil
Keywords
Varrimento Laser 3D 3D laser scanning Fissuração Cracks Reconstrução de superfícies Surface reconstruction Nuvens de pontos Point clouds Computação simbólica Symbolic computation Algoritmos Algorithms Reabilitação Rehabilitation
Citation
AMARAL, Miguel Martins do - Caracterização e modelação de fissuras em edifícios utilizando 3D laser scanning, com vista à sua reabilitação. Lisboa: Instituto Superior de Engenharia de Lisboa, 2014. Dissertação de mestrado.
Publisher
Instituto Superior de Engenharia de Lisboa