Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Bridge Inspections"”.
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Automating Bridge Inspections Using Prompt-Based Change Detection
Routine bridge inspections are essential for public safety, but manual inspections are very time consuming, costly, and unsafe to inspector.Using UAV’s solves these problems but these come with their own challenges. A key challenge in automating the bridge inspection is that images from different …
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Human Computer Interaction Design for Assisted Bridge Inspections via Augmented Reality
… some of the challenges associated with aging bridge infrastructure, this dissertation explores the development and evaluation of a novel tool for bridge inspections leveraging Augmented Reality (AR) and computer vision (CV) technologies to facilitate measurements. Named the Wearable Inspection …
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A deep learning-based approach towards automating visual reinforced concrete bridge inspections
Visual inspections are fundamental to the maintenance of RC bridge infrastructure. However, their highly subjective nature often compromises the accuracy of inspection results and ultimately leads to inaccurate prioritisation of repair and rehabilitation activities. Visual inspections are also …
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Identification of Vulnerable Zones on Steel Railway Bridges
… the static and dynamic analyses of steel railway bridges subjected to the action of moving trains on the Crocodile, Kalbaskraal, and Van Staden railway bridges located in the Western Cape. The parameters of the bridges were taken from the existing desktop information. Numerical simulations of …
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Inspection of Flexible Fillers in Post-Tensioned Bridges
… flexible fillers (FF) in new post-tensioned (PT) bridges. Flexible fillers have several advantages compared to the currently used cementitious grouts (CG) and can offer longer-lasting structures by providing better corrosion protection and allowing for replaceable tendons, which reduces the …
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Route Optimization for Automated Bridge Inspection with Genetic Algorithm
… (GA) to generate efficient routes for a robotic bridge inspection team. Using robots to automate the process of bridge inspection will improve human safety and reduce time and money allocated to bridge inspections. To do this, we attack the problem of minimizing and balancing routes for a team of …
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COCO-Bridge: Common Objects in Context Dataset and Benchmark for Structural Detail Detection of Bridges
Common Objects in Context for bridge inspection (COCO-Bridge) was introduced for use by unmanned aircraft systems (UAS) to assist in GPS denied environments, flight-planning, and detail identification and contextualization, but has far-reaching applications such as augmented reality (AR) and other …
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Framework for risk-based management and safety of railroad bridge infrastructure using wireless smart sensors (WSS)
… and comply with new federal regulations on bridge safety, North American railroads are exploring means and methods to improve the management of their bridge networks. Current maintenance, repair, and replacement (MRR) decisions are informed by bridge inspections and ratings. Inspection and …
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Use of Photogrammetry Aided Damage Detection for Residual Strength Estimation of Corrosion Damaged Prestressed Concrete Bridge Girders
… damage reduces the load-carrying capacity of bridges which poses a threat to passenger safety. The objective of this research was to reduce the resources involved in conventional bridge inspections which are an important tool in the condition assessment of bridges and to help in determining if …
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Development of a long-term, multimetric structural health monitoring system for a historic steel truss swing bridge
The bridge stock across the United States is ageing, with many bridges approaching the end of their design life. The situation is so dire that the American Society of Civil Engineers gave the nation’s bridges a grade of “C+” in the 2013 edition of their “Report Card on America’s Infrastructure.” In …
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Automated Generation of Geometric Digital Twins of Existing Reinforced Concrete Bridges
The cost and effort of modelling existing bridges from point clouds currently outweighs the perceived benefits of the resulting model. The time required for generating a geometric Bridge Information Model, a holistic data model which has recently become known as a "Digital Twin", of an existing …