High Efficiency Techniques for the Assessment of Railways Infrastructures and Buildings

Collin, Bertrand; Carreaud, Pierre; Lançon, Hervé

doi:10.1016/j.trpro.2016.05.153

Cited by 6 publications

(5 citation statements)

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“…These are large infrastructures and the applications in which their point clouds are employed usually require a high resolution. This is why MLS is the most appropriate technology to be used for railway networks, although there are some works developed using ALS or TLS data [134][135][136].…”

Section: Railway Network Monitoringmentioning

confidence: 99%

“…They use cross sections of the point clouds to create a 2D image and an operator reviews them to obtain suspicious areas. When using TLS data, Collin et al [136] proposed the use of the Infra-Red information to extract distortions. They compared information from different campaigns and then visually extracted cracks, wear seepages and humid areas, among others.…”

Section: Inspectionmentioning

confidence: 99%

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Review of Laser Scanning Technologies and Their Applications for Road and Railway Infrastructure Monitoring

et al. 2019

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Improving the resilience of infrastructures is key to reduce their risk vulnerability and mitigate impact from hazards at different levels (e.g., from increasing extreme events, driven by climate change); or from human-made events such as: accidents, vandalism or terrorist actions. One of the most relevant aspects of resilience is preparation. This is directly related to: (i) the risk prediction capability; (ii) the infrastructure monitoring; and (iii) the systems contributing to anticipate, prevent and prepare the infrastructure for potential damage. This work focuses on those methods and technologies that contribute to more efficient and automated infrastructure monitoring. Therefore, a review that summarizes the state of the art of LiDAR (Light Detection And Ranging)-based data processing is presented, giving a special emphasis to road and railway infrastructure. The most relevant applications related to monitoring and inventory transport infrastructures are discussed. Furthermore, different commercial LiDAR-based terrestrial systems are described and compared to offer a broad scope of the available sensors and tools to remote monitoring infrastructures based on terrestrial systems.

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Section: Railway Network Monitoringmentioning

confidence: 99%

Section: Inspectionmentioning

confidence: 99%

Review of Laser Scanning Technologies and Their Applications for Road and Railway Infrastructure Monitoring

et al. 2019

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“…Although some authors have developed methods using data from both aerial laser scanning (ALS) and terrestrial laser scanning (TLS) systems in the railway environment [4][5][6], the most common approach is to work with mobile laser scanning (MLS) point clouds. The use of MLS systems is translated into safer and faster surveys, obtaining data with very high accuracy and quality [7].…”

Section: Literature Reviewmentioning

confidence: 99%

Automated Inspection of Railway Tunnels’ Power Line Using LiDAR Point Clouds

et al. 2019

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Transport networks need periodic inspections to increase their safety and improve their management. In the last few years, LiDAR (light detection and ranging) technology has become a tool for helping to create a precise database of almost any type of infrastructure. Mobile laser scanning (MLS) systems use a laser beam to collect dense three dimensional (3D) point clouds, which include geometric and radiometric data of the environment in which they are placed. In the context of this paper, a methodology for automatically inspecting the clearance gauge and the deflection of the aerial contact line in railway tunnels is presented. The main objective is to compare results and verify their compliance with the Spanish norm. The 3D data are provided by a LYNX Mobile Mapper System (MMS). First, the area is surveyed and then the obtained (3D) point cloud is classified into contact wire, suspension wire, and remaining points. Finally, the inspection of the railway’s power line is performed. The validation of the proposed methodology has been carried out in three different tunnel point clouds, obtaining both qualitative and quantitative results for points’ classification, together with the results of the measures performed.

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“…In this context, efficiency of inspection and processing should be optimized while guaranteeing both accuracy and repeatability. Solutions based on high resolution camera acquisition [3] may help meet these objectives.…”

Section: Constraints and Motivationsmentioning

confidence: 99%

Technological developments as an answer to bridge management challenges

Orcesi

Godart

Gaillet

et al. 2019

IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management

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Bridge management is a challenge as owners have to deal with limited financial resources to maintain the functionalities and safety of ageing structures. Demands on transportation networks change, due to regulatory developments, society's evolution and shifts with high expectations on the operational performance of roadway bridges with reduced congestion, delay, and accidents. To minimize intrusion in the transport flow, inspection and monitoring methods should be non-destructive, minimally invasive. They should be capable of yielding rapid and accurate inspection results allowing an adequate response from the asset manager. Research aims at including autonomously operating equipment (e.g. robotics), non-intrusive (remote or proximity) observation techniques, or other methods that ensure quality and performance control of the roadway bridges in time, more safely, more quickly and/or to a higher degree of accuracy and precision.The innovation subgroup in COST action TU1406 investigates novel condition monitoring and sensing technologies for the assessment of structural serviceability and safety. Advanced, integrated, cost-effective and reliable instrumentation solutions, techniques and concepts are looked at with the aim to provide data, that will be used to compute innovative performance indicators. In this context, this paper briefly reminds some significant challenges associated with bridge management and presents three examples of innovation in bridge monitoring and NDT investigation techniques.

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High Efficiency Techniques for the Assessment of Railways Infrastructures and Buildings

Cited by 6 publications

References 0 publications

Review of Laser Scanning Technologies and Their Applications for Road and Railway Infrastructure Monitoring

Review of Laser Scanning Technologies and Their Applications for Road and Railway Infrastructure Monitoring

Automated Inspection of Railway Tunnels’ Power Line Using LiDAR Point Clouds

Technological developments as an answer to bridge management challenges

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