Engineering Commons^™

Influence Of Section Selection On Mechanical Performance Of Corrugated Steel Box Culvert, Zhang Shun, Liu Baodong, Gao Meng, Wu Fei, Wang Zhihong

Journal of China & Foreign Highway

Corrugated steel box culverts exhibit a higher section utilization rate compared with circular，arched，and pipe-arch corrugated steel structures，making them more suitable for for scenarios with restricted embankment height.While numerous studies focus on strengthening strategies for corrugated steel box culverts，research on selecting cross-sectional forms is scarce.This study utilized the finite element analysis software Abaqus to develop finite element models of corrugated steel box culverts with sidewall inclination angles of 0°，5°，10°，15° and 20° respectively.The impact of these inclination angles on the structural stress and deformation outcomes was analyzed.The results indicate that increasing the sidewall inclination angles can effectively reduce vertical deformation and maximum …

Study On Anchorage Reliability For Strand Shoe And Pull Rod Of Air‑Spinning Suspension Bridge, Huang Anming, Yang Bo, Chen Long, Xie Jun, Chen Xin

Journal of China & Foreign Highway

Each strand wire of the main cable in the suspension bridge constructed by the AS method is sleeved and anchored on the strand shoes on both banks.The strand shoe transmits the strand force to the anchoring system through the pull rod.The bearing capacity of the strand shoe after the interaction between the strand shoe and the wires of the main cable，the stress state of the wires after small curvature bending，and the influence of installation accuracy of the pull rod on the anchoring reliability all need to be qualitatively and quantitatively studied and verified by the experiment.In this paper，the main cable …

Research On Gravity Anchorage Foundation Of Dadu River Bridge In Luding, Zhou Ti Ng, Tao Qiyu, Li Zejun

Journal of China & Foreign Highway

Moraine soils formed during th e Qua ternary glacial period are widely distributed in the west of China，exhibiting good mechanical properties and deep overburden.This paper studied the Dadu River bridge in Luding and investigated the influence of various foundation forms on anchorage stability in the case of considering moraine soils as the soil supporting layer of gravity anchorage foundation through theoretical analysis and numerical simulation.The findings suggest that a slant expanded foundation with a notched sill demonstrates good force-bearing capability and is cost-effective.These results can provide a reference for similar construction projects in the west of China.

Test On Water Mist Wrapped Dust Reduction Technology For Tunnels, Wang Yijun, Wang Fei, Jia Yuedi, Pan Weihua, He Xingchun, Yao Wenhui

Journal of China & Foreign Highway

In order to eliminate the dust produced by tunnel blasting more quickly and effectively，two kinds of mist spray and dust reduction schemes were put forward，which were the “air duct water mist wrapped type ” and the “vehicle-mounted water mist wrapped type ”.The field test was carried out on Jiaoding Tunnel in Yunnan.The results show that for the dust reduction technology scheme of “air duct water mist wrapped type ”，the dust concentration of the No.1 characteristic position at the tunnel face decreases to 3.87 mg/m3 after 10 minutes of dust reduction，which meets the specification requirements.For the dust reduction technology of “vehicle-mounted …

Numerical Simulation On Bearing Characteristics Of Tunnel‑Type Anchorage Of A Grand Bridge Over Qingjiang River, Yin Hongmei, Shi Qian, Zhang Yihu

Journal of China & Foreign Highway

This paper took the tunnel-type anchorage on the left bank of a grand bridge over the Qingjiang River as an example and established a three-dimensional geological generalization model based on the engineering geological analysis.In addition，the paper used different software to realize the approximate grid discrete division of complex rock mass and tunnel-type anchorage structure.FLAC3D software was used to simulate different working conditions，and the deformation characteristics and bearing capacity of the tunnel-type anchorage were obtained.It is found that the potential failure mode of the tunnel-type anchorage is that the anchor and the rock mass cut by the structural plane on the …

Study On Length Of Deceleration Lane Of Left Off‑Ramp For Urban Underground Interchanges Based On Traffic Conflicts, Wang Hailiang, Cheng Chong, Guan Hong, Ding Naikan

Journal of China & Foreign Highway

To set a reasonable range of the length of the deceleration lane in the diverge area of the left off-ramp for urban underground interchanges，the effects of the length of the deceleration lane，as well as interactions between traffic volumes and design speeds of mainline and ramp on traffic conflict in the diverge area，were exami ned.By taking the underground interchange of the Wuhan East-South Lakes Tunnel Project as an example，the VISSIM micro traffic simulation test was carried out，and the conflict rate （RCR） and exposed time to collision （TTET） were extracted.The results show that ① when the length of the deceleration lane increases，the …

Study On Safety Risk Assessment System For Waste Dump Of Mountainous Expressways, Ye Xian, Yin Hao, Zhao Xin, Wang Guanqun, Gao Yu

Journal of China & Foreign Highway

The safety of waste dump projects of mountainous expressways is related to environmental protection，water and soil conservation，highway building protection，and downstream environment-sensitive point protection，so it is necessary to put forward safety assessment methods.Based on the data analysis of 1 369 waste dumps in Yunnan Province，the safety risk factors of the waste dump engineering were proposed and summarized as five primary indicators，including site selection and design factors，construction factors，regional geological factors，external influencing factors，and data integrity factors，and 18 secondary indicators were further put forward.The group decision-making analytic hierarchy process （AHP ） model was established，and the weight of secondary indexes was determined by 64 technical …

Analysis On Design Concept Of Subgrade And Pavement Of Colombia High‑Grade Highway, Liu Tao, Hu Guanhua, Yuan Yi

Journal of China & Foreign Highway

Colombian highway design predominantly adheres to American Standards，emphasizing design concepts reflective of the United States while encompassing Colombia's engineering design habits，concepts，and characteristics.This paper introduced the main design schemes of the Colombia MAR 2 Highway Project in northern Colombia，including protection engineering，drainage engineering，subgrade filling，spoil ground，and pavement.It conducted a comparative analysis between Colombian and Chinese design concepts，highlighting similarities and disparities，and put forward the thinking of mutual learning.

Study On Flexural Behavior Of Wet Joints Of Prefabricated Steel‑Uhpc Composite Bridge Deck, Liao Wancheng, Zhao Hua, An Jiahe

Journal of China & Foreign Highway

Prefabricated steel-UHPC composite bridge deck is a new deck structure system that places the longitudinal rib at the upper layer and forms PBL shear connectors.This structure can be prefabricated in the factory and assembled on-site.The adjacent steel beams are integrated by welding，and the cast in-situ UHPC wet joints connect the adjacent UHPC bridge decks.However，these wet joints represent the structure's vulnerable segments but with little research.To this end，a full-scale model test has been conducted to study the flexural behavior of the wet joints in a steel-UHPC composite bridge deck in a practical project.The Abaqus finite element model was established and verified …

Research On Shape Optimization Of Four‑Center Circular Highway Tunnel Based On Parametric Modeling Idea, Zhu Lei, Guo Meng, Guo Jinyong, Shen Caihua, Zhang Hanyi

Journal of China & Foreign Highway

The rational cross-sectional form of the four-center circular highway tunnel contributes to enhancing the stress state of the lining structure，reducing cracks in the composite lining，and enhancing the durability of the tunnel structure.Utilizing the Ansys APDL programming platform and guided by the design principle of continuous-curvature，a parametric modeling equation for the geometrical dimensions of local tunnel shape in arch foot area was established.The calculation method and numerical simulation models for the equivalent mechanical parameters of the anchor reinforcement area were also developed.The study revealed the impact of the local tunnel shape parameter design in the arch foot area on the internal …

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.

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, 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, 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.

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.

Indiana Design Manual Chapter 46 Updates, Nathaniel Shellhamer, Taylor Ruble

Purdue Road School

INDOT is working on a total revision of Chapter 46 “Intersections at Grade” of the Indiana Design Manual (IDM). These revisions address numerous longstanding concerns with the way intersections are designed in Indiana and also contribute design information for alternative intersections.

Demystifying Utility Coordination: Understanding The Basics, Josshe I. Palm

Purdue Road School

This session will explain utility coordination to non-utility coordinators. It will help educate others about the role and responsibilities of a utility coordinator, an OSA, easy UC and design mistakes to avoid, scope and design considerations, items commonly overlooked, when to coordinate SUE, and how to work with your UC to request a letting adjustment. We will also highlight UC submittals and allow time for questions about the UC’s role in a project’s success.

Demystifying Traffic Engineering For The Rest Of Us, Nathaniel Shellhamer, David Reamer

Purdue Road School

Have you ever uttered the phrase “I’m not a traffic engineer”? When traffic engineers go off on a tangent, can it start to sound like a foreign language? This session is for you! We will break down traffic engineering concepts, such as innovative intersections, traffic analysis buzzwords and acronyms, and more. This session will be geared towards non-traffic engineers and anyone else who might explain these concepts to the traveling public.

Analyzing Video And Isobus Data To Understand Risk And Safety Practices For Roadside Mowing, Nathan Sprague, Timothy Wiegman, J. T. Evans

Graduate Industrial Research Symposium

In Indiana, roadside mowing covers 11,200 miles, presenting significant risks. The Indiana Department of Transportation (INDOT) seeks safer methods, including automated evaluations and autonomous robots. Analyzing 120 hours of video and ISOBUS data, we quantify mower interactions with the road and obstacles, finding mowers on -road up to 91% of the time in rural areas and 57% on highways. Key obstacles identified include signs and posts. This research aids in developing risk assessment models and safety evaluations, aiming to improve mowing safety and efficiency, and it supports future development of autonomous mowing technologies.

Online Instructional Tools For Motor Carriers, Brian Howell, Jennifer Walton, Paul Ross, Andrew Martin

Kentucky Transportation Center Research Report

Commercial motor carrier customers on Kentucky highways must register and pay taxes for licensing and credentialing requirements. The Kentucky Transportation Cabinet (KYTC) provides an online Motor Carrier Portal that offers information and instructions on meeting these requirements, but customers have increasingly resorted to calling into KYTC’s motor carrier help desk, thereby straining limited personnel resources. The Kentucky Transportation Center (KTC) coordinated with KYTC to develop a series of online instructional videos that can better assist customers with applying for and meeting credentialing requirements.

KTC researchers used a three-phase approach to determine the feasibility and requirements for instructional videos. First, they …

Impact Of The New Context Functional Classifications For Kytc, Arlen Sandlin, Jill Asher, Nikiforos Stamatiadis, Jeff Jasper, Rachel Catchings, Chris Van Dyke

Kentucky Transportation Center Research Report

State transportation agencies are adopting an expanded context classification system to inform project development and delivery. This system classifies roadways into one of five categories based on factors such as level of development, building densities and setbacks, multimodal user patterns and requirements, network permeability, and speed. Compared to functional classification, context classification better captures the types of mobility, travel patterns, and user mixes observed in specific contexts. The expanded context classification system is found in AASHTO’s A Policy on Geometric Design of Highways and Streets (7^th Edition). The forthcoming 8^th edition will deepen integration of context classification throughout …

Pl 43 Traffic Forecasting Report 2023, Mei Chen, Xu Zhang, Eugene Antwi

Kentucky Transportation Center Research Report

This document is the seventh edition of the Traffic Forecasting Report (TFR) for the state of Kentucky. TFR data are important for multiple engineering applications that involve analyzing temporal and spatial variability in traffic distributions and volumes. Most of the metrics discussed in the report were computed using data from 2019, 2021, and 2022 — excluded from consideration were 2020 data because they exhibited anomalous traffic patterns tied to shutdowns associated with the COVID-19 pandemic. Data summarized in this report include average daily traffic, annual average daily truck traffic, travel activity by vehicle type, weekday and weekend hourly volume percentages, …

Evaluation Of Ndot’S Sediment Barrier Practices Using Performance Data, Michael A. Perez, Wesley N. Donald, J. Blake Whitman, Brian G. Roche

Nebraska Department of Transportation: Research Reports

To protect waterways adjacent to construction projects with disturbed land, a 50 ft (15 m) vegetated buffer or equivalent sediment controls are required. However, there is little guidance on the effectiveness of vegetated buffers in removing sediment or how sediment barriers can aid shorter buffers or replace buffers. A modeling methodology was developed and used to determine the performance of 11,664 50 ft (15 m) vegetated buffer configurations with Nebraska conditions; sediment capture averaged 92.6% and ranged from 18.5% to 99.5%. To determine the performance of Nebraska Department of Transportation standard and modified sediment barrier installations, a large-scale testing methodology …

Strengthening The Deployment Of Uncrewed Aerial Systems (Uas) At Kytc, Rachel Catchings, Suzanne Smith, Gayle Marks, Candice Wallace, Christopher Van Dyke

Kentucky Transportation Center Research Report

The Kentucky Transportation Cabinet (KYTC) and transportation agencies around the United States increasingly depends on uncrewed aircraft systems (UAS — also commonly known as drones) to collect data and accelerate project development and delivery. Drones let transportation practitioners safely and efficiently perform many activities, including bridge and highway inspection, construction monitoring, surveying, emergency response, and measuring stockpiles. KYTC’s implementation of UAS has expanded rapidly over the past 10 years, however, the agency lacks well-coordinated procedures for connecting pilots with end data users, scheduling and conducting flights, developing and documenting best practices, and processing and storing data. Based on a review …

Best Practices For Recruitment And Retention Of Transportation Professionals, Chris Van Dyke, Bryan Gibson, Sarah Mccormack, Merl Hackbart, Doug Kreis

Kentucky Transportation Center Research Report

Many public sector agencies, including state departments of transportation (DOTs), have long found recruiting and retaining staff a daunting challenge. Lured by the promise of higher salaries in the private sector, many people are reluctant to sacrifice their long-term earnings potential to pursue public service. And with the quality of fringe benefits (e.g., retirement plans, health insurance) offered by public agencies having declined gradually, it is even more difficult to persuade prospective employees to accept a lower salary. Many studies over the past 15—20 years have looked at methods for solving the problem of recruitment and retention within the context …

Assessing Military Parking: A Deep Learning Approach To Evaluating Standards And Impacts, Ryan D. Lalonde

Theses and Dissertations

Current United States Department of Defense (DoD) standards require a minimum amount of parking for each building. This requirement defines how much off-street parking to construct. However, the impact of these requirements remains unclear. This study builds upon the emerging field of overhead imagery analytics by directly tying it to parking on military installations. Specifically, this study leverages a pretrained deep learning car detection model, Car Detection – USA, developed by Esri for use within ArcGIS, and couples it with open-access temporal imagery sourced from Google Earth Pro to assess selected parking lots across Area B, Wright-Patterson Air Force Base, …

An Exploratory Framework For Benchmarking Vehicle Miles Traveled (Vmt) Estimates Associated With University Campuses, Troy Kawahara

Master's Theses

Although vehicle miles traveled (VMT) has become the standard for assessing transportation related impacts in California, some have concerns that many VMT estimates are not properly grounded or informed by real world data, potentially resulting in flawed estimates and impact assessments. This is especially true of special generators, like college and university campuses, which have complex travel patterns distinct from that of the general public. This thesis attempts to resolve a significant disparity observed between two credible VMT estimates for Cal Poly’s campus wide VMT. As part of a campus master planning effort, a VMT estimate was produced in 2019 …

Reliability-Based Analysis Of Horizontal Curve Design By Evaluating The Impact Of Vehicle Automation On Roadway Departure Crashes And Safety Performance, Omar Al-Sheikh, Seyed Hooman Ghasemi, Mohammad Jalayer

Henry M. Rowan College of Engineering Departmental Research

Roadway departure (RwD) crashes are significant safety concerns, especially at horizontal curves. The design of these curves plays a crucial role in mitigating RwD crashes. Thus, a thorough understanding of the interaction between driver behavior, vehicle automation, and geometric design is vital. Substantive safety, which emphasizes the inherent safety in a road's design and function, serves as the foundation of our approach. Building on this, the study employs a safe system approach to investigate the performance of horizontal curves under both non-automated and partially automated conditions, using a reliability-based analysis focusing on Stopping Sight Distance as the primary driver demand. …

Pilot Study On Improving Crash Data Accuracy In Kentucky Through University Collaboration, Michael A. Fields, Eric Green, Robert Kluger, Xu Zhang, Kirolos Haleem

Kentucky Transportation Center Research Report

Without high-quality crash data and robust interpretive/analytical tools to analyze these data, transportation agencies will struggle to develop evidence-based strategies for improving road safety. Crash narratives are one element of crash reports that pose especially acute interpretive challenges. These narratives supplement coded data and give an account of incidents authored by responding law enforcement officers. Despite their value, conducting manual reviews of the 150,000+ crash reports and narratives issued in Kentucky each year is not feasible. To address this challenge, reviewers examined approximately 8,000 crash narratives from calendar year 2020 using a proprietary web-based quality control tool to identify discrepancies …

Advancing Universal Id Through Demonstration Of Enabling Technologies, Joseph Crabtree, Andrew Martin, Jeeyen Koo, Brian Beaven

Kentucky Transportation Center Research Report

The purpose of this project was to install, demonstrate, and evaluate two candidate technologies that could be used to achieve “Universal ID” (i.e., having a unique, electronically readable identifier on every commercial motor vehicle in the United States). The two technologies selected for this demonstration represent (1) a potential low-cost near-term solution (simple RFID tags and roadside readers) and (2) a potential future solution that leverages technology that is anticipated to be installed on all future vehicles to support a variety of connected-vehicle (CV) applications. For this demonstration project, both types of roadside reader technology were installed at three existing …