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Browsing by Author "Barnes, Robert"

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Flood Debris Build-Up Loading and Assessment of Adequacy of ALDOT Bridge Pile Bents During Extreme Flood/Scour Events 

Daniels, Joslyn (2005-08-15)
A description of a flood debris build-up loading and an assessment of the adequacy of a chosen group of typical ALDOT bridge pile bents having various loading conditions and under various amounts of scour are presented in ...

Immediate Deflections of Simply Supported, Bonded, Class T and Class C Prestressed Concrete Beams 

Hughes, Hayden (2023-04-17)
Design practice for prestressed members has moved toward allowing partially prestressed members, which are allowed to crack under service loads. To define design requirements, the ACI 318 Building Code explicitly defines ...

Investigation of Seismic Design of Slab-on-Girder Bridge Details in Alabama 

Broderick, Joseph (2018-07-31)
The Alabama Department of Transportation (ALDOT) requested assistance to simplify and evaluate the process of designing typical slab-on-girder bridges for seismic loads. First, the determination of the seismic hazard in ...

Laboratory and Field Testing of Precast, Three Sided Arch Culverts 

Meadows, Richard L. (2012-05-10)
The use of precast, three-sided arch culverts has become fairly popular for new short-span bridges and bridge replacements due to their rapid construction time, aesthetic appeal, and minimal impact to the waterway, but ...

Laboratory Testing of Transverse Joints in Precast-Panel Bridge-Deck Replacement Systems 

Matthews, Jamieson (2017-08-17)
Out of the 614,387 bridges in the United States, 56,007 are structurally deficient (FHWA 2016). In many instances this structural deficiency relates to the deck of the bridge. Deck degradation is very common in bridges ...

Lean-On Bracing Refined Design Methods and Field Assessment 

Gasser, Claire (2024-04-15)
Cross-frames are critical for the stability of steel bridges during construction and play a significant role in completed bridges. Historically, brace locations have been regions of fatigue concerns, and each brace requires ...

Life Cycle Assessment of a Steel-Timber Composite Structure Comparison to an Established Structural System 

Rohde, Emma (2023-01-11)
The building and construction industry drives global energy use and emissions. With climate change mitigation being a forefront topic of concern, the building and construction industry has a responsibility to alleviate its ...

Load Rating Corrugated Metal Culverts with Shallow Soil Cover 

Liu, Bujing (2023-05-01)  ETD File Embargoed
Culverts under existing roadways that do not meet current cover requirements are common. Even though they may have performed without any issues for decades, rating of many of them using current specifications and methodologies ...

Load Testing, Analysis, and Design of a New Box Culvert Wing Tab 

Voitenko, Pavlo (2018-08-03)
Culverts are critical hydraulic and transportation structures. They are often subjected to complex load conditions such as backfill earth pressure and traffic live load. Culverts may experience total and differential soil ...

Long-Term Deformations and Prestress Losses in Precast, Prestressed Bridge Girders 

Neal, Tyler (2015-05-18)
Self-consolidating concrete (SCC) is widely becoming used to construct precast, prestressed bridge girders. In order to determine the acceptance of SCC for bridge girders in the state of Alabama, The Alabama Department ...

Low-Slip Force Friction Connections for Early Phase Energy Dissipation in Steel Structures 

Koch, Patrick (2015-11-10)
Previous research suggests adding early phase energy dissipation to structural steel systems can improve seismic performance. This can be achieved with a Low-slip Force Friction (LSFF) damper designed to activate prior to ...

Mitigation of Alkali-Silica Reaction in the Bibb Graves Bridge 

Warnock, Robert (2012-07-23)
The Bibb Graves Bridge in Wetumpka, AL has severe damage due to alkali-silica reaction (ASR) in two of its reinforced concrete arches. A mitigation procedure developed in the summer of 2010 by the FHWA, ALDOT, and ...

Near-Surface Mounted, Fiber-Reinforced Polymer Strips for Negative-Moment Strengthening of Concrete Bridges—Design Methodology 

Alexy, Jeffrey (2009-05-12)
A bridge near Letohatchee, Alabama, was found to be deficient for certain types of truck loadings. Fiber-reinforced polymer (FRP) strips were selected to use in the strengthening scheme. Various models and code recommendations ...

Nondestructive Evaluation of Prestressed Concrete Structures by Means of Acoustic Emissions Monitoring 

Xu, Jian Gong (2008-12-15)
The acoustic emission (AE) technique has been found to be an informative nondestructive testing (NDT) method for evaluation of structures constructed with certain materials. While AE evaluation procedures and evaluation ...

Numerically Modeling Structural Behavior of Precast Three-Sided Arch Bridges for Analysis and Design 

Jensen, Timothy Jared (2012-05-15)
Foley Products contracted with Auburn University to perform laboratory testing and design validation of three-sided bottomless precast concrete structures being produced. Tests performed included a field test on an active ...

The Origins and Use of Various Code Specifications and Design Guides for Concrete Slabs-on-Ground in Hangar Applications 

Morgan, Ciara (2018-12-13)
Research focused on the origins and applications of various code specifications and design guides used in the design of concrete slabs-on-ground in airplane hangar foundations. This thesis investigates the mathematical ...

Resistance of Multi-Wythe Insulated Masonry Walls Subjected to Impulse Loads 

Browning, Robert (2008-12-15)
The overall objective of this project was to define the dynamic flexural resistance of multi-wythe insulated masonry walls with specific emphasis placed on determining the potential application of foam insulation as a ...

Scour Potential of Cohesive Soils 

Walker, Melvin (2013-05-13)
Determination of erosion parameters in order to predict scour depth is imperative to designing safe, economic, and efficient bridge foundations. Scour behavior of granular soils is generally understood, and design criteria ...

Shear Strengths of End Regions of Prestressed Self-Consolidating Concrete Beams 

Gurbuz, Mustafa (2008-05-15)
Understanding of the shear and bond performance of self-consolidating concrete (SCC) is vital to fully implement SCC usage in structures. State highway structures are a potential application for prestressed SCC systems ...

Stability of Highway Bridges Subject to Scour 

Walker, James (2008-12-15)
A common design/construction procedure for highway bridges in Alabama is the use of steel HP piles driven into a firm stratum with a length above ground/water up to the level of a concrete bent cap which supports the bridge ...