Appalachian Electric Cooperative Zinc Substation Foundation Project, 2019 University of Tennessee, Knoxville
Appalachian Electric Cooperative Zinc Substation Foundation Project, Leah Stephens, James Throckmorton, Grayson Layne, Ben Morris
Chancellor’s Honors Program Projects
No abstract provided.
Tension Splitting Strength Of Bcsa Concrete Cylinders, 2019 University of Arkansas, Fayetteville
Tension Splitting Strength Of Bcsa Concrete Cylinders, Andrew Steven Deschenes
Civil Engineering Undergraduate Honors Theses
The focus of this research was to compare the tension splitting strength (TSS) of belitic calcium sufloaluminate (BCSA) cement concrete to tensile strength predicted by the American Concrete Institute (ACI) and to similarly proportioned portland cement (PC) concrete. BCSA is a rapid-setting cement with higher early strength, higher ettringite content, and lower calcium silicate hydrate (C-S-H) content than PC. PC and BCSA cement concrete cylinders were broken at different ages in both uniaxial compression and TSS. It was found that BCSA had a similar TSS to both the ACI prediction and PC TSS, but the results require further testing for ...
Turbulent Effects On Building Pressure Using A Two-Dimensional Finite Element Program, 2019 University of Arkansas, Fayetteville
Turbulent Effects On Building Pressure Using A Two-Dimensional Finite Element Program, Jonese Woods
Civil Engineering Undergraduate Honors Theses
Much of the knowledge about building aerodynamics today was obtained from physical testing like wind tunnel testing. Physical testing is time-consuming and very expensive. As a result, computational methods like the finite element method are being explored for use in building aerodynamics. Despite several years of research, there is still not a clear understanding of the peak pressure on buildings due to turbulence. Many of the research thus far has focused on comparing different computational methods. However, much work is needed in understanding the capability of the individual methods. In this work, a two-dimensional finite element program is used to ...
In-Situ Field Monitoring Of A Uhpc And Hpc Bridge Superstructure Under Diagnostic Load Testing Using Digital Image Correlation, 2019 University of Texas at Tyler
In-Situ Field Monitoring Of A Uhpc And Hpc Bridge Superstructure Under Diagnostic Load Testing Using Digital Image Correlation, Prajwol Sharma
Civil Engineering Theses
New innovative methods of bridge design are being sought to increase the service life of these structure. High Performance Concrete (HPC) and Ultra-High-Performance Concrete (UHPC) utilizes a mix of high strength concrete with steel fibers to create a strong and ductile reinforced concrete mix. While not new to civil engineering construction, this material still has some uncertainty of its performance both long and short term. As a result, in-situ experimental monitoring is important to verify methods of design and the suitability of the materials. A two-span pre-stressed UHPC and HPC reinforced concrete bridge superstructure was designed at New Mexico State ...
The Influence Of Citric Acid On Setting Time And Temperature Behavior Of Calcium Sulfoaluminate-Belite Cement, 2019 University of Arkansas, Fayetteville
The Influence Of Citric Acid On Setting Time And Temperature Behavior Of Calcium Sulfoaluminate-Belite Cement, Edgar Soriano
Civil Engineering Undergraduate Honors Theses
Today the need to opt for alternative cementitious materials is growing due to environmental reasons and construction time frames that portland cement cannot always satisfy. Calcium Sulfoaluminate (CSA) cements are a strong candidate to supplement or replace portland cement in the construction field for certain applications. In the United States, CSA cement has been limited mostly to pavement repairs because of its rapid initial setting time. The chemical compound responsible for this phenomenon is the alumina. This compound and sulfate are present in larger proportions compared to portland cement. The purpose of this research is to study how the use ...
Side Shear Strength Of Preformed Socket Connections Suitable For Vertical Precast Members, 2019 Iowa State University
Side Shear Strength Of Preformed Socket Connections Suitable For Vertical Precast Members, Zhao Cheng, Sri Sritharan
Civil, Construction and Environmental Engineering Publications
Use of precast substructure in accelerated bridge construction (ABC) has been gaining popularity due to its advantages over traditional cast-in-place (CIP) construction. When using vertical precast members (e.g., columns and piles) in bridge substructure construction, they must be connected to the adjoining members (e.g., bent cap, pile cap, and abutment) reliably. To accomplish this goal and promote ease of construction, the preformed socket connection has been suggested. This connection is established by inserting the vertical precast member inside a preformed socket in the precast adjoining member and filling the socket with non-shrink, high-strength grout. Using specimens that modeled ...
Point Cloud Technology For Analysis Of Existing Structures, 2019 University of Central Florida
Point Cloud Technology For Analysis Of Existing Structures, Jacob Cano
Electronic Theses and Dissertations
For this thesis, a study was completed on two different structures on the UCF Orlando campus through the use of both structural plans and point cloud technology. The results sought to understand the viability of point cloud technology as an accurate tool for the static and dynamic modal analysis of existing structures. For static analysis, a portion of the framing of Spectrum Stadium was rendered, modeled, analyzed and compared to a previous case study. The results emphasized how different users can render dissimilar member sizes and lengths due to human judgment on point cloud visuals. The study also found that ...
Urban Underground Infrastructure Monitoring Iot: The Path Loss Analysis, 2019 Purdue University
Urban Underground Infrastructure Monitoring Iot: The Path Loss Analysis, Abdul Salam, Syed Shah
The extra quantities of wastewater entering the pipes can cause backups that result in sanitary sewer overflows. Urban underground infrastructure monitoring is important for controlling the flow of extraneous water into the pipelines. By combining the wireless underground communications and sensor solutions, the urban underground IoT applications such as real time wastewater and storm water overflow monitoring can be developed. In this paper, the path loss analysis of wireless underground communications in urban underground IoT for wastewater monitoring has been presented. It has been shown that the communication range of up to 4 kilometers can be achieved from an underground ...
2019 Student Steel Bridge Team, 2019 Rowan University
2019 Student Steel Bridge Team, Kourtney Arena, Andrew Biglin, Brett Palmer, Nathaniel Maute, Kenneth Reiser, Jacob Dicks, Paul Kowaleski
Student Research Symposium Posters
Every year AISC runs a regional and national steel bridge competition. The competition offers a chance for civil engineering students to gain valuable experience designing a bridge. In addition to this, mechanical engineering students are provided the opportunity to practice machining steel parts. For the competition, teams from participating schools are given a scenario with certain constraints to design a bridge for. At the competition, the bridges are ranked based on weight, structural efficiency, construction economy, assembly speed, deflection, aesthetics, and overall performance.
The program Risa 3D was used in order to design and perform analysis on the bridge. Using ...
Computer Predictions Of Tunnel Response To Blast, Robert Drummond, Claudia Sun, Andrew Valkenburg, Aaron Freidenberg, Jake Bruhl
West Point Research Papers
Deeply buried bunkers offer a level of protection that is unmatched by conventional, above-ground, construction methods. The construction of the bunker itself, as well as ingress/egress and ventilation for the completed bunker, requires substantial digging. Thus, deeply buried bunkers are usually located within a mountain and accessed via tunnels. In order to better predict the response of tunnels and bunkers to an average design blast load, computer simulations were performed. First, a simplified groundshock numerical code based on an assumed geology and buried depth was used to predict the demand. Then, analytical methods were utilized to design the tunnel ...
An Agent-Based Evacuation Model To Improve Safety In The Cascadia Subduction Zone, 2019 Oregon State University
An Agent-Based Evacuation Model To Improve Safety In The Cascadia Subduction Zone, Haizhong Wang
TREC Friday Seminar Series
This seminar will present ongoing research into how integrated social, natural, and engineered systems can improve life safety under threat of multi-hazards. The targeted scenario is a magnitude 9.0 earthquake and tsunami from the Cascadia Subduction Zone, threatening communities along 1,000 miles of the US Pacific Northwest coastline.
Since the mid-1980’s scientific evidence has underscored the possibility of such an extreme event, and it has taken at least another decade or more before public attitudes and policy have begun to adapt to this new hazard. Life safety is a pressing issue for the near-field CSZ tsunami hazard ...
Development Of Post-To-Deck Connections For Use In A Mash Tl-4 Steel-Tube Bridge Rail, 2019 University of Nebraska - Lincoln
Development Of Post-To-Deck Connections For Use In A Mash Tl-4 Steel-Tube Bridge Rail, Pascual Mauricio
Civil Engineering Theses, Dissertations, and Student Research
A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware (MASH) Test Level 4 steel-tube bridge rail to the side of the bridge deck to limit impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge rail system to be compatible for use on all deck configurations, the Illinois and Ohio Departments of Transportation desired the new system to attach to bridge decks comprised of concrete slabs or precasted prestressed, concrete box-beam girders.
A new post-to-deck connection for a new MASH 2016 TL-4 steel-tube ...
Civil Engineering Design Of Cornhusker Council's Outdoor Education Center, 2019 University of Nebraska - Lincoln
Civil Engineering Design Of Cornhusker Council's Outdoor Education Center, Kelly Weiler
Honors Theses, University of Nebraska-Lincoln
A team of geotechnical, structural, hydraulic, environmental, and transportation experts collaborated to provide engineering solutions to the Cornhusker Council in an effort to solve the current problems facing their Outdoor Education Center. This results of this project provided the structural design of three bridges on the property, transportation plans for two parking lots and roadway design, geotechnical recommendations for soil testing and erosion prevention, and an environmental and hydraulic analysis of the property. A major challenge in the design of this project is the consideration of the dangers and regulations that accompany the floodway and floodplain regions on site. Various ...
The Timber Buckling Restrained Brace Frame, 2019 California Polytechnic State University, San Luis Obispo
The Timber Buckling Restrained Brace Frame, Jessica Resta
With the increasing awareness on the topic of earthquake resistance, efficient, cost-effective, and environmentally friendly solutions in the structural field are on the rise. The purpose of this report is to investigate the Timber Buckling Restrained Brace (TBRB), a new lateral-resisting element made of steel and lumber, applicable in residential and small commercial units. In addition to the TBRBs’ materials being readily available, the braces are easy to manufacture, reducing overall costs of production and transportation. The brace, made partly of wood, has also a low environmental impact when compared to other lateral force resisting elements like concrete shearwalls or ...
Behavior Of Geothermal Energy Piles Embedded In Rock, 2019 Southern Methodist University
Behavior Of Geothermal Energy Piles Embedded In Rock, Ehab Sabi
Civil and Environmental Engineering Theses and Dissertations
Geothermal energy piles are categorized as closed systems. Energy piles are a relatively new technology which couples the structural role of traditional pile foundations to that of heat exchangers to fulfill the required energy demand of buildings and infrastructures. These foundations are equipped with pipes embedded in the concrete forming the pile. While connected to a heat pump, the fluid circulating inside these pipes provides the exchange of heat with the ground for heating and cooling purposes. As the undisturbed temperature at the shallower depths of the ground stays comparatively constant the whole year, being warmer than the surrounding temperature ...
Microwave Imaging For Corroded Rebars And Delamination In Concrete Structures, 2019 Missouri University of Science and Technology
Microwave Imaging For Corroded Rebars And Delamination In Concrete Structures, Matthew Dvorsky, Stephon Barker, Mohammad Tayeb Ahmad Ghasr, R. Zoughi
Corrosion of embedded steel reinforcement bars (rebars) in concrete leads to concrete cracking and delamination, which in turn leads to increased salt and moisture permeation and further damage. This study aims to evaluate the effectiveness of microwave imaging for the characterization of this corrosionand delaminationof steel rebar embedded in concrete.
Model-Assisted Validation Of A Strain-Based Dense Sensor Network, 2019 Iowa State University
Model-Assisted Validation Of A Strain-Based Dense Sensor Network, Jin Yan, Xiaosong Du, Simon Laflamme, Leifur Leifsson, Chao Hu, An Chen
Civil, Construction and Environmental Engineering Publications
Recent advances in sensing are empowering the deployment of inexpensive dense sensor networks (DSNs) to conduct structural health monitoring (SHM) on large-scale structural and mechanical systems. There is a need to develop methodologies to facilitate the validation of these DSNs. Such methodologies could yield better designs of DSNs, enabling faster and more accurate monitoring of states for enhancing SHM. This paper investigates a model-assisted approach to validate a DSN of strain gauges under uncertainty. First, an approximate physical representation of the system, termed the physics-driven surrogate, is created based on the sensor network configuration. The representation consists of a state-space ...
Methodology For Including Base Infrastructure In Conceptual System Analysis, 2019 Air Force Institute of Technology
Methodology For Including Base Infrastructure In Conceptual System Analysis, Patrick J. Kelly Iv
Theses and Dissertations
The 2018 National Defense Strategy defines a transition to agile basing, where the logistics footprint of new conceptual systems can be distributed across a set of airfields, instead of one main operating base. Currently, there is no capability to assess early concepts using airfield data. This research develops a methodology and a tool that assesses system concepts using world-wide civil and military airfield infrastructure, such as runway parameters, parking, munitions, fuel and warehouse storage, and distance to areas of interest. Specifically, the focus of the thesis is on concepts for the Intelligence, Surveillance, and Reconnaissance (ISR) Strike mission. Four concepts ...
Application Of Computational Tools To Spaghetti-Based Truss Bridge Design, 2019 Purdue University Northwest
Application Of Computational Tools To Spaghetti-Based Truss Bridge Design, Jin Xu, Jiliang Li, Nuri Zeytinoglu, Jinyuan Zhai
ASEE IL-IN Section Conference
Application of Computational Tools to Spaghetti-Based Truss Design
Statics and Strength of Materials are two foundational courses for Mechanical/Civil Engineering. In order to assist students in better understanding and applying concepts to a meaningful design task, SolidWorks and theoretical calculation were used for a spaghetti-bridge design contest with the constraints of given maximum weight and allowable support-material weight. As the first step of this iterative designing process, both extrude feature and structural member were introduced to model planar bridge trusses. Then SolidWorks’ Statics module was used to run FEA analysis of the structural performance in efforts to optimize the ...
Hyperspectral Image Analysis For Mechanical And Chemical Properties Of Concrete And Steel Surfaces, 2019 Missouri University of Science and Technology
Hyperspectral Image Analysis For Mechanical And Chemical Properties Of Concrete And Steel Surfaces, Liang Fan, Paul Manley, Huaishuai Shang, Abdullah Alhaj, Hongyan Ma, Genda Chen
According to the 2017 ASCE Report Card, 39% and 15% of 614,387 bridges in the U.S. are more than 50 years and 40 to 49 years, respectively. The number of deficient bridges is increasing. One of the most common causes of reinforced concrete deterioration is corrosion of steel reinforcing bars. Currently, most bridges are visually inspected every two years using boom/snooper trucks to get access to various areas to be inspected. The subjective visual inspection often leads to inconsistent results that are less useful in bridge management. Hyperspectral camera, installed on an unmanned aerial vehicle, can potentially ...