Modelling Techniques For Slab Track Systems,
2024
Alexandria University, Faculty of Engineering, Transportation Department
Modelling Techniques For Slab Track Systems, Mohamed Hafez Fahmy Aly, Islam Mahmoud Abou El-Naga, Ahmed Abdul Hay Soliman, Muhammad Ahmad Diab
Journal of Engineering Research
The railway slab track has replaced the ballast material in the classical ballasted track with reinforced concrete slab or asphalt layer to cope up with the increasing axle loads, train high-speeds, and to reduce overall maintenance cost. This paper aims to investigate the linear and nonlinear behavior of the most common slab track systems (BÖGL, Shinkansen, and RHEDA 2000) using American (AREMA) loads for different soil types to recommend the most suitable analysis type for each component of the slab track systems. Slab track Finite Element models have been built using Midas GTS NX software. The geometric model for each …
Supply And Distribution Of Flow And Sediment In River And Delta System,
2024
Louisiana State University and Agricultural and Mechanical College
Supply And Distribution Of Flow And Sediment In River And Delta System, Kazi M. Sadid
LSU Doctoral Dissertations
River deltas are valuable ecosystems that have been essential in supporting human populations and the economy across the world for centuries. However, climate change and human activities have caused significant land loss in delta areas. A prime example of a region that has suffered severe land loss is Louisiana in the United States. Coastal restoration is therefore essential for the livelihoods of its residents. To address this issue, the Lower Mississippi River (LMR) channel bar has been regularly dredged to rebuild degraded marsh areas. Additionally, sediment diversions off LMR have been designed to build marsh areas sustainably. This dissertation investigates …
Advancing Depth-Storage-Discharge Modeling In Regional Hydrology,
2024
University of South Florida
Advancing Depth-Storage-Discharge Modeling In Regional Hydrology, Fahad Alshehri
USF Tampa Graduate Theses and Dissertations
This dissertation presents the development of an innovative approach to populating rating characteristics and supporting hydrologic modeling, designed to simplify complex real-world hydrological systems and accurately estimate their responses to rainfall, runoff, baseflow and evaporation stresses. The core of this research addresses the challenges inherent in characterizing hydrography elements in hydrologic modeling, particularly in regions lacking comprehensive stream reach survey data, flow and stage. This issue is pronounced in areas with extensive wetland hydrography, where traditional modeling requires intensive manual calibration, and course rating data that are often unavailable. To overcome these challenges, this study introduces a novel procedure that …
Performance Assessment Of Microencapsulated Phase Change Materials With Low To High Thermoregulation Range In Asphalt Binder,
2024
Rowan University
Performance Assessment Of Microencapsulated Phase Change Materials With Low To High Thermoregulation Range In Asphalt Binder, Anil Kumar Baditha, Ayyaz Fareed
Graduate Student and Postdoctoral Fellow Symposium
Asphalt pavements face significant challenges due to low temperature cracking and rutting caused by extreme temperature fluctuations and traffic loading. These issues result in higher maintenance costs and reduced service life of the pavements. To address this, researchers explored the use of Microencapsulated Phase Change Materials (MPCMs) to induce thermoregulation in asphalt pavements. However, the existing research focused on high-temperature performance of binders, highlighting the need of research on evaluating the low-temperature performance. Therefore, the study aims to evaluate the impact of incorporating MPCMs on low to high temperature performance of binders. Three types of MPCMs were incorporated into asphalt …
Assessment Of Pollution Sources For The Lake Burullus Influent Drains At The North Of Egypt,
2024
The British University in Egypt
Assessment Of Pollution Sources For The Lake Burullus Influent Drains At The North Of Egypt, Aya Hassan
Civil Engineering
Assessment of Pollution Sources for the Lake Burullus Influent Drains at the North of Egypt. Egyptian northern region is facing significant pollution issues due to various factors such as fish farming expansion, industrial activities, and agricultural drainage water that enters the lake from the north through different drains. This pollution has detrimental effects on the lake's ecology and economy. The main goal of this study is to assess the current state of the influent drains into the Lake Burullus, that represent the second largest lake in the northern lakes of Egyptian. The water quality parameters in the influent drains to …
Safety Investigation Of Crash Rates During Hurricane Evacuations,
2024
Embry-Riddle Aeronautical University
Safety Investigation Of Crash Rates During Hurricane Evacuations, Amelia K. Lawson
Doctoral Dissertations and Master's Theses
This study aimed to investigate crash rates across four distinct periods—evacuation, re-entry, emergency, and non-emergency—during Hurricanes Matthew (2016), Irma (2017), and Michael (2018). A notable gap in existing research pertains to understanding crash rates during these critical phases of hurricane events. By addressing this gap, this research contributes to a deeper comprehension of evacuation transportation safety. The methodology employed ArcMap to construct an interactive map for data collection, encompassing key variables such as the number of crashes, traffic volumes, duration of each period under analysis, and roadway segment lengths for each hurricane. Evaluating the crash rate per million vehicular miles …
Dissolved Nitrogen Removal In Biochar Amended, High Permeability Media For Urban Stormwater Treatment,
2024
University of South Florida
Dissolved Nitrogen Removal In Biochar Amended, High Permeability Media For Urban Stormwater Treatment, Mark Vicciardo
USF Tampa Graduate Theses and Dissertations
Nutrient pollution in stormwater drives the eutrophication of inland and costal waterbodies which leads to sea grass retreat and the proliferation of harmful algal blooms (HAB). These anthropogenic effects destabilize ecosystems, and some HABs can pose direct human health risk. Bioretention, or the storage and controlled discharge of stormwater run-off in an ecologically engineered setting, is a potential solution to this problem. However, it relies heavily on the settling of particles as a nutrient removal mechanism, and thus struggles with pollutants, such as dissolved nitrogen, which is a particular problem in Florida where the geological prominence of phosphorus leaves nitrogen …
Numerical Study Of Cone Penetration In Calcareous Sands: Investigating Cone Tip Resistance Correction Factors For Crushable Soils,
2024
Portland State University
Numerical Study Of Cone Penetration In Calcareous Sands: Investigating Cone Tip Resistance Correction Factors For Crushable Soils, Stephanie Michelle Hyder
Dissertations and Theses
The cone penetration test (CPT) is used to characterize the behavior and properties of soils, including the susceptibility to earthquake liquefaction triggering. The cone tip resistance relates to liquefaction susceptibility through relative density, where relative density is closely related to both cone tip resistance and liquefaction susceptibility. Currently, published methods of estimating liquefaction potential (i.e., cyclic resistance ratio) are based on silica sands and do not properly characterize calcareous sands. The measured cone tip resistance in calcareous sands is lower than in silica sands at the same relative density; this difference is generally attributed to the higher compressibility of calcareous …
A 4-Node Shell Finite Element Based On Assumed Bending And Membrane Strains For Static Analysis Of Plates And Shells,
2024
University of Echahid Cheikh Larbi Tebessi, Algeria
A 4-Node Shell Finite Element Based On Assumed Bending And Membrane Strains For Static Analysis Of Plates And Shells, Sifeddine Abderrahmani
Emirates Journal for Engineering Research
In this paper the development of a new rectangular flat shell element is proposed. This element is called SBRPK-SBRIE. This element is used in the numerical analysis of thin structures based on the strain approach with linear elastic behavior. Combining bending and membrane elements yields the proposed element.The strain-based rectangular finite element for the thin plate bending element denoted SBRPK, and the strain-based membrane element denoted SBRIE. Several numerical examples have been conducted to assess the accuracy and reliability of the developed element compared with the theoretical results and other finite elements. Obtained results show its good performance compared to …
Unmanned Aircraft Systems In Road Assessment: A Novel Approach To The Pavement Condition Index And Vizir Methodologies,
2024
Pontificia Universidad Javeriana Cali
Unmanned Aircraft Systems In Road Assessment: A Novel Approach To The Pavement Condition Index And Vizir Methodologies, Diana Marcela Ortega Rengifo, Jose Capa Salinas, Javier Alexander Perez Caicedo, Manuel Alejandro Rojas Manzano
Purdue University Libraries Open Access Publishing Fund
This paper presents an innovative approach to road assessment, focusing on enhancing the Pavement Condition Index (PCI) and Visión Inspection de Zones et Itinéraires Á Risque (VIZIR) methodologies by integrating Unmanned Aircraft System (UAS) technology. The research was conducted in an urban setting, utilizing a UAS to capture high-resolution imagery, which was subsequently processed to generate detailed orthomosaics of road surfaces. This study critically analyzed the discrepancies between traditional field measurements and UAS-derived data in pavement condition assessment. The study findings demonstrate that photogrammetry-derived data from UAS offer at least similar or, in some cases, improved information on the collection …
104. I-69 Orx Section 3: Completing The Connection,
2024
Purdue University
104. I-69 Orx Section 3: Completing The Connection, Steven Nicaise
Purdue Road School
The I-69 Ohio River Crossing (ORX) will be a key, final connection of I-69 between Evansville, Indiana and Henderson, Kentucky. The transformational project includes three contracts, two states and one much-anticipated new river crossing. In this session, you will hear an update on the ORX project as a whole and learn about I-69 ORX Section 3.
Signs, Gateways, And Landscaping … Oh My!,
2024
INDOT
Signs, Gateways, And Landscaping … Oh My!, George Mccue, Dimas Prasetya
Purdue Road School
Cities and towns want to welcome highway travelers with gateway signs or aesthetics. Whether that’s part of a road project or a standalone proposal, a key to proper planning is understanding safety-based limitations on what can be placed on state ROW and where. Even off- ROW, there are laws governing nearby visible signage. We’ll cover INDOT’s Public Art and Landscaping Policy, FHWA’s role, and the federal Highway Beautification Act.
Confessions Of A Former Vision Zero Coordinator,
2024
Purdue University
Confessions Of A Former Vision Zero Coordinator, Maria Cantrell
Purdue Road School
Maria Cantrell, P.E. served as the City of Columbus Vision Zero Coordinator from 2019 to 2023. She lead the development of the City’s multiagency plan and program intended to eliminate fatal and serious injury crashes. Learn about what efforts and strategies worked, what didn’t, and a few pointers picked up along the way.
Maximize Drainage Design With Bentley Openroads Technology,
2024
HNTB
Maximize Drainage Design With Bentley Openroads Technology, Nathan A. Goins, Jennifer Basham
Purdue Road School
Whether you’re creating brand new drainage networks or tying into existing networks, learn how to maximize your efficiency with Bentley’s OpenRoads Drainage and Utilities (SUDA) Technology. We’ll explore tips, tricks, and lessons learned using this improved tool for drain-age design on INDOT projects.
Work Zone Safety Fundamentals And Best Practices,
2024
INDOT
Work Zone Safety Fundamentals And Best Practices, Mischa Kachler
Purdue Road School
Join us for a discussion of fundamental principles and best practices of temporary traffic control (TTC) that promote work zone safety. This session will cover topics that designers should know and consider when developing TTC plans. Attendees who will most benefit from this session are designers new to TTC and experienced designers looking for a refresher.
Developing The Next Indiana Mutcd,
2024
INDOT
Developing The Next Indiana Mutcd, David Boruff
Purdue Road School
The session will provide a brief overview of the updates to the new 11th edition of the MUTCD that would be of interest to local agencies.
Purple Line Bus Rapid Transit Project Overview,
2024
HNTB
Purple Line Bus Rapid Transit Project Overview, Michael Schneider, Rachel Wilson
Purdue Road School
The Purple Line will be Indianapolis’ second Bus Rapid Transit (BRT) Line, opening for revenue service in the fall of 2024. It will provide rapid transit service along 15.2 miles of E. 38th Street and Post Road, between Indianapolis and Lawrence, for a total cost of $188 million. This presentation will provide an overview of IndyGo’s overall capital program with a focus on the Purple Line project—its unique design features and successful project delivery—from design through construction.
Public Speaking Level 2: The Skill Of Storytelling And Persuasion,
2024
Veridus Group, Inc.
Public Speaking Level 2: The Skill Of Storytelling And Persuasion, Tim Jensen
Purdue Road School
Building on “Public Speaking for Engineers and Public Officials,” this session will take it to the next level of public speaking. We will discuss and build skills of storytelling and persuasion and how it relates to people and public speaking.
Introduction Into Land Aquisition,
2024
City of Noblesville
Introduction Into Land Aquisition, James Hellmann, Jonathan Hughes
Purdue Road School
This discussion will give an overview of the laws on land acquisition, what the typical process looks like, and one community’s perspective on communication related to the process.
Reimagining Cherry Lane: A Road To Collaboration,
2024
Purdue University
Reimagining Cherry Lane: A Road To Collaboration, Adam Keyster, Ben Anderson
Purdue Road School
Join us on a case study to learn how collaborative efforts between Purdue University and the City of West Lafayette created multimodal infrastructure through the realignment of Cherry Lane and supporting work. Presenters will discuss how this project is solving longstanding issues that the city and university have encountered over the years and how the community benefits from the implemented solution.
