Transportation Engineering Commons^™

Development Of A Socketed Foundation For The Midwest Weak Post V1, Ronald K. Faller, Dean L. Sicking, Scott Rosenbaugh, John D. Reid, Tyler L. Schmidt

Nebraska Department of Transportation: Research Reports

A socketed foundation was designed and evaluated for use with the Midwest Weak Post (MWP), Version 1. Dynamic component testing was conducted on five different design configurations with varying embedment depths, steel reinforcement, and soil conditions. The low strength of the MWPs limited the force transferred into the foundations and prevented damage in the form of concrete cracking or fracture. Additionally, the lateral movements of the socketed foundations were all within the 1-in. (25-mm) limit established to ensure reuse of the foundations without resetting. The selected design consisted of a 12-in. (305-mm) diameter concrete shaft reinforced with four vertical bars …

Predicting The Dynamic Fracture Of Steel Via A Non-Local Strain-Energy Density Failure Criterion, Kevin D Schrum, Dean L. Sicking, Ronald K. Faller, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Development Of A Mash Tl-3 Transition Between Guardrail And Portable Concrete Barriers, Robert W. Bielenberg, Ronald K. Faller, Karla A. Lechtenberg, David A. Gutierrez, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Assessment And Evaluation Of Timber Piles Used In Nebraska For Retrofit And Rating, Atorod Azizinamini, Alireza Mohammadi, Jawad H. Gull, Ramin Taghinezhad

Nebraska Department of Transportation: Research Reports

No abstract provided.

Universal Breakaway Steel Post For Other Applications, Robert W. Bielenberg, Ronald K. Faller, Karla A. Lechtenberg, Craig W. Price, Tyler L. Schmidt, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Stormwater Pollution Treatment Bmp Discharge Structures, Miles F. Simmons, David M. Admiraal

Nebraska Department of Transportation: Research Reports

No abstract provided.

Dynamic Testing Of A Non-Proprietary, High-Tension, Cable End Terminal System, Ronald K. Faller, Dean L. Sicking, Jennifer D. Schmidt, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Effectiveness Study Of Unl's Pneumatic Crack/Joint Preparation Device, Yong Cho, Changbum Ahn

Nebraska Department of Transportation: Research Reports

No abstract provided.

Safety Performance Evaluation Of Weak-Post, W-Beam Guardrail Attached To Culvert, Scott K. Rosenbaugh, Ronald K. Faller, Dean L. Sicking, Karla A. Lechtenberg, Allison J. Schneider, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Comprehensive Evaluation Of Fracture Critical Bridges, Aaron Jon Yakel, Atorod Azizinamini, Huy Pham, Saeed Doust

Nebraska Department of Transportation: Research Reports

No abstract provided.

Phase I Assessment Of Guardrail Length-Of-Need, Francisco Daniel B. Albuquerque, Cody S. Stolle, Dean L. Sicking, Ronald K. Faller, Karla A. Lechtenberg

Mid-America Transportation Center: Final Reports and Technical Briefs

Report No. TRP-03-284-14

Roadside Grading Guidance - Phase Ii, Kevin D. Schrum, Francisco D. B. Albuquerque, Dean L. Sicking, Ronald K. Faller, John D. Reid

Mid-America Transportation Center: Final Reports and Technical Briefs

Phase I of this project relied on assumptions surrounding crash data from the state of Ohio in 2000. The number of fatal and severe crashes in that year was significantly lower than average. As a result, the conclusions were indefinite. Phase II was carried out using crash data from the state of Ohio over seven years. The increased pool of data removed the need for many of the underlying assumptions used in Phase I and provided a solid foundation of conclusions and recommendations.

The number of fatal and severe crashes that occurred on each slope and height for each functional …

Overwintering Biology And Tests Of Trap And Relocate As A Conservation Measure For Burying Beetles, W. Wyatt Hoback, Adrienne Conley

Nebraska Department of Transportation: Research Reports

Burying beetles are carrion beetles and utilize dead animal carcasses for feeding and reproductive efforts. They assist with decomposition, prevent the spread of disease, and reduce the number of pest species. The largest species of carrion beetle, the American burying beetle, is a federally endangered insect and its distribution has been reduced by 90%. The conservation of this species is important in maintaining a healthy ecosystem. Overwintering biology and trap and relocation were studied to determine how this beetle survives freezing temperatures and to find whether trap and relocation could be a suitable conservation management measure.

Trap and relocation is …

Development Of A Nebraska Culvert Aquatic Organism Passage Screening Tool, W. Wyatt Hoback, Jeremy Grauf, Erik Prenosil

Nebraska Department of Transportation: Research Reports

No abstract provided.

Investigation Of Rural/Suburban High-Speed Multilane Roundabouts, Aemal Khattak, Eric Thompson, Shanshan Zhao

Nebraska Department of Transportation: Research Reports

This research was focused on two issues related to multilane roundabouts on high-speed highways (speed limit 45 mph or greater) in rural and suburban areas. The first was the tradeoff between converting a traditional stop-controlled or signalized intersection to a multilane roundabout while the second was the safety of newly constructed high-speed multilane roundabouts in rural and suburban areas. The research team reviewed information from diverse published documents and conducted a survey of state and local transportation agencies. Crash data on multilane rural roundabouts were not available for this research. Therefore, the research team relied on crash and other data …

Field Tests And Numerical Modeling Of Vehicle Impacts On A Boulder Embedded In Compacted Fill, Lynsey Reese, Tong Qiu, Daniel Linzell, Edward O'Hare, Zoltan Rado

Department of Civil and Environmental Engineering: Faculty Publications

Landscape Vehicular Anti-Ram (LVAR) systems are a group of protective barriers, which are designed using natural materials (e.g., boulders) and have proven to both effectively protect sensitive structures against threats and be aesthetically pleasing. This paper presents two consecutive vehicular crash tests hitting the same single boulder embedded in AASHTO coarse aggregate fill. A LS-DYNA model was developed to simulate the field-scale tests, which were instrumented with high-speed cameras and pressure cells. A readily available truck model from the National Crash Analysis Center was modified and implemented in the LS-DYNA model. The boulder and surrounding soil were modeled using the …

Numerical Simulations Of Dynamic Behavior Of Polyurea Toughened Steel Plates Under Impact Loading, Chien-Chung Chen, Daniel G. Linzell

Department of Civil and Environmental Engineering: Faculty Publications

The objective of the work discussed herein is to develop a nonlinear 3D finite element model to simulate dynamic behavior of polyurea toughened steel plates under impact loading. Experimental and numerical work related to model development are presented. Material properties are incorporated into numerical models to account for strain-rate effects on the dynamic behavior of polyurea and steel. One bare steel plate and four polyurea toughened steel plates were tested under impact loading using a pendulum impact device. Displacement time-history data from experimental work was used to validate the numerical models. Details on material model construction, finite element model development, …

Assessment Of Load Sharing Members In An Anti-Ram Bollard System, Scott Kinney, Daniel Linzell, Edward O'Hare

Department of Civil and Environmental Engineering: Faculty Publications

Due to the increased frequency, scale, and danger of malicious attacks carried out by Vehicle Borne Improvised Explosive Devices (VBIEDs), anti-ram bollards have become a key element in the protection of critical structures. This study focused on the evaluation of above grade load sharing members in a steel anti-ram bollard system in an attempt to develop efficient load sharing mechanisms that improve the structure’s ability to resist vehicle impacts, while concurrently remaining aesthetically pleasing to the general public. A computational assessment was completed using calibrated LS-DYNA finite element models to determine if effective load sharing member configurations and designs could …

Passive Stormwater Samplers For Sampling Highway Runoff From Bmps: Feasibility Studies, Tian C. Zhang, John S. Stansbury, Massom Moussavi

Nebraska Department of Transportation: Research Reports

No abstract provided.

Fertilizer Effects On Attaining Vegetation Requirements, Walter H. Schacht, Carol Wienhold

Nebraska Department of Transportation: Research Reports

No abstract provided.

Implementation Of Precast Concrete Deck System Nudeck (2nd Generation), George Morcous, Maher K. Tadros

Nebraska Department of Transportation: Research Reports

No abstract provided.

Development And Evaluation If Best Management Practices For Highway Runoff Pollution Control, Tian C. Zhang, John S. Stansbury, Massom Moussavi

Nebraska Department of Transportation: Research Reports

No abstract provided.

Implementation Of 0.7 In. Diameter Strands In Prestressed Concrete Girders, George Morcous

Nebraska Department of Transportation: Research Reports

No abstract provided.

Midwest Guardrail System With Southern Yellow Pine Posts, Karla A. Lechtenberg, Robert W. Bielenberg, Ronald K. Faller, Dean L. Sicking, David A. Gutierez, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Establishing Permanent Vegetation After Highway Construction, John C. Soper, Walter H. Schacht

Nebraska Department of Transportation: Research Reports

No abstract provided.

Post Weld And Epoxy Anchorage Variations For W-Beam Guardrail Attached To Low-Fill Culverts, Scott K. Rosenbaugh, Ronald K. Faller, Dean L. Sicking, Robert W. Bielenberg, Craig W. Price, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Structural Reliability Analysis Of Corroded Steel Girder Bridge, Mohammed Shaalan Al Badran

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

The natural aging, environmental impact, and appropriate design are certainly playing a serious role in safety of the bridges function. The functional safety of bridge constitutes a prime element of the transportation system serving commuters, passengers and freight. According to Federal Highway Administration, the steel bridges share represents a large amount of the United States’ bridges. In last century, the collapse of both the Silver Bridge at Point Pleasant, West Virginia over the Ohio River on December 15, 1967 and over the Mianus River Bridge in Connecticut on June 28, 1983 showed that steel corrosion has been the leading reason …

Development Of A New Energy-Absorbing Roadside/Median Barrier System With Restorable Elastomer Cartridges, Ronald K. Faller, Dean L. Sicking, Karla A. Lechtenberg, Robert W. Bielenberg, Scott K. Rosenbaugh, James C. Holloway, John D. Reid, Jennifer D. Schmidt

Nebraska Department of Transportation: Research Reports

No abstract provided.

Cable Median Barrier Failure Analysis And Remediation Phase Ii, Cody S. Stolle, Dean L. Sicking, Ronald K. Faller, John D. Reid

Nebraska Department of Transportation: Research Reports

Cable median barrier crashes from a total of 12 states were analyzed. Crash data included scene diagrams, photographs, and field measurements, crash narratives, although the availability of data in each crash varied.

Major contributors to penetration crash propensity were identified: diving underride, in which the front end of the vehicle dropped below the bottom cable; prying, in which the vehicle profile caused cable separation or lifting; override; bouncing override, in which the vehicle rebounded after contact with the back slope and bounced over the top of the barrier; system failure, in which one component failure or design failure prevented the …

Pavement Quality Indicators, Connor Villanueva, Wayne Jensen

Nebraska Department of Transportation: Research Reports

No abstract provided.