Using a Laser Scanning to Construct a 3D Numerical Model to Study the Flooding Risk in Urban Area

Meouche, Rani El; Rezoug, Mehdi; Vandevenne, W.; Hamzaoui, Rabah

doi:10.7763/ijet.2013.v5.587

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…In topography, it has great utility in planialtimetric topographic surveys, calculation of volumes, maps and generation of topographic profiles, and Digital Elevation Models-DEM [23].…”

Section: Main Applicationsmentioning

confidence: 99%

Study of the application of terrestrial laser scanning for identification of pathologies in concrete structures

Netto¹,

Carvalho²,

Reis³

et al. 2023

Reinforced Concrete Structures - Innovations in Materials, Design and Analysis

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Laser scanning enhances classic field surveys. The terrestrial laser scanner is a versatile device with application in various areas of knowledge, which uses remote sensing fundamentals to determine point coordinates. It is a remote, active, noninvasive, nondestructive and high-precision technique to capture reality that records from thousands to millions of points per second in a detailed representation of the situation called a point cloud. The surveys are performed along the object of interest in a process called scanning, which has as its gross product a dense cloud of three-dimensional points of the scanned object. This point cloud stores information about the object’s geometry, return pulse intensity, and point color data. As a way of extending the uses of terrestrial laser scanning, this work studies the application of this method in civil engineering, through the identification of pathologies in reinforced concrete structures, aiming to show how geoinformation can be employed in this area. To this end, a case study of the São Cristóvão Viaduct was conducted in the city of Rio de Janeiro. This study included definition of the site of analysis; planning and execution of the field survey to collect raw data; processing of the point cloud; and generation of a three-dimensional surface for global visualization of the structure and identification of pathological manifestations and the regions where they were observed. Concrete structures in general are affected by various external factors, such as weather and anthropogenic actions, which contribute to their wear.

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“…In topography, it has great utility in planialtimetric topographic surveys, calculation of volumes, maps and generation of topographic profiles, and Digital Elevation Models-DEM [23].…”

Section: Main Applicationsmentioning

confidence: 99%

Study of the application of terrestrial laser scanning for identification of pathologies in concrete structures

Netto¹,

Carvalho²,

Reis³

et al. 2023

Reinforced Concrete Structures - Innovations in Materials, Design and Analysis

View full text Add to dashboard Cite

show abstract

“…Um exemplo de aplicação é apresentado por Meouche et al (2013), que utilizaram um LST para gerar uma modelagem numérica de terreno com a finalidade de determinar zonas de risco de inundação em áreas urbanas. Guarnieri et al (2009) Gonçales (2007) fez estudos com aplicação na engenharia civil, utilizando um LST voltado à construção de túneis.…”

Section: Algumas Aplicações De Sistemas De Varredura a Laserunclassified

Laser Scanner Terrestre: teoria, aplicações e prática

2016

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RESUMO -A utilização de um Sistema de Varredura Laser Terrestre (SVLT) possui inúmeras aplicações nas diversas áreas envolvidas em levantamentos tridimensionais. Possui ampla utilização na mineração para cálculos de volumes, registro de monumentos históricos, geração de modelos digitais de superfície (MDS), modelos digitais de terreno (MDT) e aplicações na arquitetura. O produto principal gerado por um SVLT é uma nuvem de pontos com coordenadas tridimensionais referenciadas ao centro de fase do sensor, que, após processos matemáticos denominado de registro, gera uma nuvem de pontos georreferenciada. Além das coordenadas tridimensionais o SVLT fornece também a intensidade de retorno do sinal, que é a energia captada pelo sensor em função da resposta espectral emitida pelo alvo. Dependendo das características do sistema, à nuvem de pontos pode-se adicionar cores a partir de fotografias das cenas que são obtidas durante as varreduras. As nuvens de pontos modelam diferentes tipos de feições existentes no terreno como vegetação, edificações, rochas, estruturas, etc. Assim, o objetivo desse trabalho é realizar uma abordagem dos principais conceitos envolvidos em relação a um SVLT, classificação de dados oriundos das nuvens de pontos e suas aplicações na geração de MDT. ABSTRACT -Terrestrial Laser Scanner System (SVLT) systems have several applications in three-dimensional surveys. It has widespread use in mining for calculating volumes, register of cultural heritage, generation of digital surface models (DSM), digital terrain models (DTM), and architectural applications. The main product generated by the SVLT systems is a cloud points with three-dimensional coordinates referenced to the phase center of the TLS. This cloud points can also be mathematical processed, generate a cloud points georeferenced. In addition to the three-dimensional coordinates, the SVLT also provide the laser return signal intensity that is the energy acquired by the sensor depending on the spectral response emitted by the target. Depends on the characteristics of the SVLT, the point clouds can have colors from scenes through photographs acquired by integration of the system with cameras. The point clouds model different types of features on the ground such as: vegetation, buildings, rocks, structures, etc. The purpose of this paper is to approach the main concepts involved in relation to an SVLT, data classification derived from point clouds and its applications for generate DTMs. Palavras

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“…Among the application areas of TLS, they stand out in engineering and architecture, infrastructure, in industry, in mining and geology, archeology, ecology, medicine and in the forensic and agricultural sectors. In engineering and architecture, the generation of as-built and 2D plans, interior design, 3D modeling (Pu and Vosselman, 2009) and integration with BIM (Building Information Modeling) technology, structure monitoring (Godycka et al,2014) In topography, it has great utility in planialtimetric topographic surveys, calculation of volumes, maps and generation of topographic pro les and Digital Elevation Models -DEM (Meouche et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Study of the Application of Terrestrial Laser Scanning for Identification of Pathologies in Concrete Structures

Netto

Carvalho

Reis

et al. 2021

Preprint

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Laser scanning enhances classic field surveys. The terrestrial laser scanner is a versatile device with applications in various areas of knowledge, which uses remote sensing fundamentals to determine point coordinates. It is a remote, active, noninvasive, nondestructive and high-precision technique to capture reality that records from thousands to millions of points per second in a detailed representation of the situation called a point cloud. The surveys are performed along the object of interest in a process called scanning, which has as its gross product a dense cloud of three-dimensional points of the scanned object. This point cloud stores information about the object’s geometry, return pulse intensity, and point color data. As a way of extending the uses of terrestrial laser scanning, this work studies the application of this method in civil engineering, through the identification of pathologies in reinforced concrete structures, aiming to show how geoinformation can be employed in this area. To this end, a case study of the São Cristóvão Viaduct was conducted in the city of Rio de Janeiro. This study included definition of the site of analysis; planning and execution of the field survey to collect raw data; processing of the point cloud; and generation of a three-dimensional surface for global visualization of the structure and identification of pathological manifestations and the regions where they were observed. Concrete structures in general are affected by various external factors, such as weather and anthropogenic actions, which contribute to their wear.

show abstract

Using a Laser Scanning to Construct a 3D Numerical Model to Study the Flooding Risk in Urban Area

Cited by 3 publications

References 4 publications

Study of the application of terrestrial laser scanning for identification of pathologies in concrete structures

Study of the application of terrestrial laser scanning for identification of pathologies in concrete structures

Laser Scanner Terrestre: teoria, aplicações e prática

Study of the Application of Terrestrial Laser Scanning for Identification of Pathologies in Concrete Structures

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