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37 records – page 1 of 4.

Bridge Deterioration Quantification Protocol Using UAV

https://research.thinkwood.com/en/permalink/catalogue1966
Year of Publication
2018
Topic
Serviceability
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Author
Duque, Luis
Seo, Junwon
Wacker, James
Publisher
American Society of Civil Engineers
Year of Publication
2018
Country of Publication
United States
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Topic
Serviceability
Keywords
Bridge
Unmanned Aerial Vehicle
UAV
Photogrammetry
Damage
Field Measurements
Pixel
Language
English
Research Status
Complete
Series
Journal of Bridge Engineering
Summary
This paper focuses on evaluating the effectiveness of an unmanned aerial vehicle (UAV) as a supplementary bridge damage quantification tool. For this study, a glued-laminated timber arch bridge in South Dakota was selected, and an UAV was utilized for the bridge damage quantification. A recommended four-stage UAV-enabled bridge damage quantification protocol involving image quality assessment and image-based damage quantification was developed...
Online Access
Free
Resource Link
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Design and Dimensioning of a Complex Timber-Glass Hybrid Structure: The IFAM Pedestrian Bridge

https://research.thinkwood.com/en/permalink/catalogue1797
Year of Publication
2016
Topic
Design and Systems
Material
Timber-Glass Composite
Application
Bridges and Spans
Hybrid Building Systems
Wood Building Systems
Author
Vallée, Till
Grunwald, Cordula
Milchert, Lena
Fecht, Simon
Publisher
Springer International Publishing
Year of Publication
2016
Country of Publication
Switzerland
Format
Journal Article
Material
Timber-Glass Composite
Application
Bridges and Spans
Hybrid Building Systems
Wood Building Systems
Topic
Design and Systems
Keywords
Joint
Bonding
Standards
Codes
Adhesive Connection
Language
English
Research Status
Complete
Series
Glass Structures & Engineering
ISSN
2363-5142
Online Access
Free
Resource Link
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Development of a Slab-on-Girder Wood-Concrete Composite Highway Bridge

https://research.thinkwood.com/en/permalink/catalogue1421
Year of Publication
2012
Topic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans

Development of a Smart Timber Bridge (Phase III): Moisture and Strain Sensor Investigation for Historic Covered Bridges

https://research.thinkwood.com/en/permalink/catalogue2182
Year of Publication
2019
Topic
Moisture
Material
Glulam (Glue-Laminated Timber)
Other Materials
Application
Bridges and Spans
Author
Phares, Brent
Pence, Trevor
Wacker, James
Hosteng, Travis
Year of Publication
2019
Country of Publication
United States
Format
Report
Material
Glulam (Glue-Laminated Timber)
Other Materials
Application
Bridges and Spans
Topic
Moisture
Keywords
Moisture Content
Sensor
Strain
Reliability
Accuracy
Language
English
Research Status
Complete
Series
General Technical Report
Summary
Nationwide, bridges are deteriorating at a rate faster than they can be rehabilitated and maintained. This has resulted in a search for new methods to rehabilitate, repair, manage, and construct bridges. As a result, structural health monitoring and smart structure concepts have emerged to help improve bridge management. In the case of timber bridges, however, a limited amount of research as been conducted on long-term structural health monitoring solutions, and this is especially true in regards to historic covered timber bridges. To date, evaluation efforts of timber bridges have focused primarily on visual inspection data to determine the structural integrity of timber structures. To fill this research need and help improve timber bridge inspection and management strategies, a 5-year research plan to develop a smart timber bridge structure was undertaken. The overall goal of the 5-year plan was to develop a turnkey system to analyze, monitor, and report on the performance and condition of timber bridges. This report outlines one phase of the 5-year research plan and focuses on developing and attaching moisture sensors onto timber bridge components. The goal was to investigate the potential for sensor technologies to reliably monitor the in situ moisture content of the timber members in historic covered bridges, especially those recently rehabilitated with glulam materials. The timber-specific moisture sensors detailed in this report and the data collected from them will assist in advancing the smart timber bridge.
Online Access
Free
Resource Link
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Drone-Enabled Bridge Inspection Methodology and Application

https://research.thinkwood.com/en/permalink/catalogue1965
Year of Publication
2018
Topic
Serviceability
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Author
Seo, Junwon
Duque, Luis
Wacker, Jim
Publisher
Elsevier
Year of Publication
2018
Country of Publication
United States
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Topic
Serviceability
Keywords
UAV
Bridge
Inspection Methodology
Damage Identification
Field Application
Girder
Superstructure
Language
English
Research Status
Complete
Series
Automation in Construction
Summary
The field of Civil Engineering has lately gained increasing interest in Unmanned Aerial Vehicles (UAV), commonly referred to as drones. Due to an increase of deteriorating bridges according to the report released by the American Society of Civil Engineers (ASCE), a more efficient and cost-effective alternative for bridge inspection is required. The goal of this paper was to analyze the effectiveness of drones as supplemental bridge inspection tools. In pursuit of this goal, the selected bridge for inspection was a three-span gluedlaminated timber girder with a composite concrete deck located near the city of Keystone in the state of South Dakota (SD)...
Online Access
Free
Resource Link
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Durable Timber Bridges - Final Report and Guidelines

https://research.thinkwood.com/en/permalink/catalogue2133
Year of Publication
2017
Topic
Design and Systems
Moisture
Serviceability
Material
Timber (unspecified)
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans

Dynamic Response of an Under-Deck Cable-Stayed Timber-Concrete Composite Bridge Under a Moving Load

https://research.thinkwood.com/en/permalink/catalogue2037
Year of Publication
2018
Topic
Mechanical Properties
Design and Systems
Material
Timber-Concrete Composite
Application
Bridges and Spans

Effectiveness of Several NDE Technologies in Detecting Moisture Pockets and: Artificial Defects in Sawn Timber and Glulam

https://research.thinkwood.com/en/permalink/catalogue778
Year of Publication
2016
Topic
Serviceability
Material
Glulam (Glue-Laminated Timber)
Solid-sawn Heavy Timber
Application
Bridges and Spans
Author
Wacker, James
Senalik, Christopher
Wang, Xping
Jalinoos, Frank
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Solid-sawn Heavy Timber
Application
Bridges and Spans
Topic
Serviceability
Keywords
Decay
Douglas-Fir
Moisture Pockets
Non-Destructive Evaluation
Scanning
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria
Summary
Several nondestructive evaluation (NDE) technologies were studied to determine their efficacy as scanning devices to detect internal moisture and artificial decay pockets. Large bridge-sized test specimens, including sawn timber and glued-laminated timbe...
Online Access
Free
Resource Link
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Effect of Moisture Induced Stresses on the Mechanical Performance of Glulam Beams of Vihantasalmi Bridge

https://research.thinkwood.com/en/permalink/catalogue1609
Year of Publication
2016
Topic
Moisture
Serviceability
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Author
Hradil, Petr
Fortino, Stefania
Salokangas, Lauri
Musci, Alessandro
Metelli, Giovanni
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Bridges and Spans
Topic
Moisture
Serviceability
Keywords
Moisture Induced Stresses
Finland
Moisture Gradients
Moisture Content
Hygrothermal
Multi-Fickian Theory
Relative Humidity
Temperature
Eurocode 5
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 2159-2167
Summary
The present paper deals with the effect of moisture induced stresses (MIS) on the mechanical performance of a glulam beam of Vihantasalmi Bridge in Finland. MIS caused by high moisture gradients in a cross section of the glulam beam are calculated by a hygro-thermal multi-Fickian model for evaluation of moisture content, relative humidity and temperature in wood that is...
Online Access
Free
Resource Link
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Efficient Shear Transfer in Timber-Concrete Composite Bridges by Means of Grouting with Polymer Mortar

https://research.thinkwood.com/en/permalink/catalogue1694
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
Timber-Concrete Composite
Application
Bridges and Spans
Author
Kaestner, Martin
Rautenstrauch, Karl
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Timber-Concrete Composite
Application
Bridges and Spans
Topic
Connections
Mechanical Properties
Keywords
Polymer Mortar
Shear Tests
Bending Tests
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4281-4290
Summary
The performance of timber-concrete composite bridge constructions crucially depends on the design of the joint between concrete deck and timber main girders. In research studies at the Bauhaus-University Weimar, innovative joining techniques based on grouting with highly-filled, tolerance-compensating polymer glue mortars have...
Online Access
Free
Resource Link
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37 records – page 1 of 4.