Browsing by Author "Davidson, James"

Now showing items 21-40 of 45

Experimental Testing and Analysis of S50 Beam with Finite Element Modeling of Splice Connection

Chitty, Hunter (2021-12-08) ETD File Embargoed

Large Area Maintenance Shelters, LAMS, are commonly used as deployable shelters by the US Air Force to store and maintain equipment. This work is specific to the LAMS located at Tyndall Air Force Base manufactured by ...

Fabric Structure Strength and Structural Integrity of Large Area Maintenance Shelters (LAMS)

Fittro, Todd (Preston) (2018-12-19)

Large Area Maintenance Shelters (LAMSs) are deployed worldwide by the United States Air Force. The U.S. Air Force uses LAMSs as storage facilities and hangars for vehicles and aircrafts alike. The inherent low weight and ...

Factors Influencing Catenary Behavior in Ductile Steel-Framed Structures

Kantrales, George (2012-07-02)

Historical precedent has established progressive collapse as a phenomenon characterized by the potential for extreme structural damage and loss of life. In an attempt to mitigate such behavior in conventional structures, ...

Feasibility Studies on the Design and Usage of Steel Pile Piles for ALDOT Bridges

Sharma, Rosy (2023-08-09)

Large diameter steel pipe piles provide an efficient and cost-effective alternative to conventional reinforced concrete bridge piles (drilled shafts) and steel piles (HP-piles). The steel pipe columns offer increased ...

Finite Element Modelling of Large Area Maintenance Shelters and Comparison to Experimental Results

Norred, Culver (2021-08-16) ETD File Embargoed

Large area maintenance shelters (LAMS) are used as temporary structures by the United States Air Force to provide shelter for helicopters, tanks, wheeled vehicles, and aircraft. There are several different brands of LAMS ...

Finite Element Simulation and Assessment of Single-Degree-of-Freedom Prediction Methodology for Insulated Concrete Sandwich Panels Subjected to Blast Loads

Newberry, Charles M. (2011-01-05)

This report discusses simulation methodologies used to analyze large deflection static and dynamic behavior of foam-insulated concrete sandwich wall panels. Both conventionally reinforced cast-on-site panels and ...

Fragment Response of Unreinforced Concrete Masonry Walls Subjected to Blast Loading Conditions

Hatfield, John (2020-04-21) ETD File Embargoed

There are very few methods for predicting the fragment velocity and fragment production of an unreinforced, ungrouted concrete masonry wall. Those that do exist often require large computational resources or fail to predict ...

Impact of Vertical Ground Motion on Seismic Response of Steel Frame Structures

Wu, Hongyang (2016-02-05)

It is a well-known fact that all earthquakes have three orthogonal components of acceleration including two horizontal and one vertical acceleration. Current design practice for design of structures in United States only ...

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 ...

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 ...

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 ...

Mechanical and Microstructural Behavior Evolution of Lead Free Solder Materials Under Different Thermal Exposures

Hasan, S M Kamrul (2023-05-01) ETD File Embargoed

With the growth of electronic packaging industries, ranging from automobile to hand-held products, reliability is a major concern. Also, to keep pace with the increasing demand of end users for integration, miniaturization, ...

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 ...

Modeling Exhaust-Generated Aerodynamic Pressure Loads on Airfield Matting Repair Systems

Rittelmeyer, Brandon M. (2021-11-30) ETD File Embargoed

Airfield matting systems are commonly used for rapid repair of damaged runways to facilitate continuity of critical operations. Under normal service conditions, matting repair systems are subject not only to wheel loads ...

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 ...

Quasi-Static and Dynamic Crack Initiation and Growth in Soda-lime Glass: Full-field Optical Investigations

Dondeti, Sivareddy (2022-11-17)

Soda-lime glass (SLG) is a widely used structural material with numerous advantages in terms of thermal, physical, and mechanical properties besides sustainability and recyclability. It is widely used for structural ...

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 ...

Seismic Response Evaluation of a Concrete Gravity Dam Considering Dam-Reservoir-Foundation Interaction

Kent, Muhammed Cagatay (2019-04-16)

The observation of the behavior of concrete gravity dams that are exposed to seismic loads is the main factor for the safety evaluation of the dams. In this regard, dam-foundation-reservoir interaction can be seen as one ...

Stability of Timber Bridges Subject to Scour

Schambeau, Mary (2012-07-25)

Because scour is responsible for most disastrous bridge failures, bridge scour monitoring is necessary for the safety of public roads. While much attention is paid to the amount of bridge scour at a foundation, the ...