Mechanistic Design Of Concrete Crossties For Rail Transit

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MECHANISTIC DESIGN OF CONCRETE MONOBLOCK CROSSTIES

MECHANISTIC DESIGN OF CONCRETE MONOBLOCK CROSSTIES FOR RAIL TRANSIT LOADING CONDITIONS Matthew V. Csenge, Xiao Lin, Henry Wolf, Marcus S. Dersch, and J. Riley Edwards University of Illinois at Urbana-Champaign (UIUC) Department of Civil and Environmental Engineering (CEE) Rail Transportation and Engineering Center (RailTEC) Newmark Civil Engineering Laboratory,

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Mechanistic Design of Concrete Crossties for Rail Transit ...

Mechanistic Design of Concrete Crossties for Rail Transit Systems Slide 3 Background and Problem Statement • Rail transit systems have unique loading conditions due to the variety of vehicles used from system to system • Limited research has been conducted to understand the type and magnitude of loads in rail transit systems • Aging rail transit infrastructure assets need to be well ...

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[PDF] MECHANISTIC DESIGN OF CONCRETE MONOBLOCK

The need for a mechanistic design approach is recognized by manufacturers of concrete crossties and fastening systems, rail transit operators, and researchers, and will provide the framework for optimized component design. The focus of this paper is to introduce mechanistic design and its principles, and introduce a project that is aimed at using these principles in the design of concrete ...

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Mechanistic design of concrete crossties and fastening ...

For a variety of reasons, concrete crossties are a dominant material choice for heavy haul freight, intercity passenger, and rail transit operators at demanding territories. The methods of designing concrete crossties and fastening systems for the aforementioned railroad systems are not developed based on mechanistic design practices considering actual field loadings and service demands, and ...

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Mechanistic Design of Rail Transit Infrastructure Components

Mechanistic Design of Rail Transit Infrastructure Components Riley Edwards, Marcus Dersch, Arthur Lima, and Minsoo Sung 2018 APTA Rail Conference 11 June 2018 Project Summary, Select Findings, and Crosstie Prototyping. RailTEC at Illinois 2 Acknowledgements Research Sponsor Education Program Sponsor Industry Partners. RailTEC at Illinois 3 FTA-Funded Resilient Concrete Crossties

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Mechanistic Design of Concrete Crossties and Fastening ...

01/10/2013  The objective of this project is the development and deployment of resilient concrete crossties and fastening systems for heavy haul freight, intercity passenger, and rail transit applications. The method for accomplishing this objective is through the use of mechanistic design principles aimed at keeping freight and public transportation safe and in a state of good repair. The specific ...

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Mechanistic design of concrete crossties and fastening ...

For a variety of reasons, concrete crossties are a dominant material choice for heavy haul freight, intercity passenger, and rail transit operators at demanding territories. The methods of designing concrete crossties and fastening systems for the aforementioned railroad systems are not developed based on mechanistic design practices considering actual field loadings and service demands, and ...

Get Price

Mechanistic Design of Concrete Crossties and Fastening ...

01/10/2013  The objective of this project is the development and deployment of resilient concrete crossties and fastening systems for heavy haul freight, intercity passenger, and rail transit applications. The method for accomplishing this objective is through the use of mechanistic design principles aimed at keeping freight and public transportation safe and in a state of good repair. The specific ...

Get Price

Mechanistic Design of Rail Transit Infrastructure Components

Mechanistic Design of Rail Transit Infrastructure Components Riley Edwards, Marcus Dersch, Arthur Lima, and Minsoo Sung 2018 APTA Rail Conference 11 June 2018 Project Summary, Select Findings, and Crosstie Prototyping. RailTEC at Illinois 2 Acknowledgements Research Sponsor Education Program Sponsor Industry Partners. RailTEC at Illinois 3 FTA-Funded Resilient Concrete Crossties

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Resilient Concrete Crosstie and Fastening System Designs ...

A design process for rail transit concrete crossties based on structural reliability analysis concepts was developed for improved optimization and cost effectiveness of future designs. Impact load factor distributions for the three rail transit systems studied were statistically different, demonstrating that unique load factors are needed to adequately represent the existing wheel loads and ...

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Resilient Concrete Crosstie and Fastening System Designs ...

A design process for rail transit concrete crossties based on structural reliability analysis concepts was developed for . improved optimization and cost effectiveness of future designs. Impact load factor distributions for the three rail transit systems studied were statistically different, demonstrating that . unique load factors are needed to adequately represent the existing wheel loads ...

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Concrete Crossties: New Railroad Design - Galesburg ...

13/08/2020  Concrete Crossties: New Railroad Design. August 13, 2020 Sarah Watkins Comment. Traveling via train has become safer and more convenient as engineers and railroad employees continue to improve track infrastructure components. This is what the researchers from RailTEC or the Rail Transportation and Engineering Center, a research group under the University of IL at Urbana

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Investigating the Concrete Crosstie and Fastening System ...

recent years, mechanistic design has been a common approach in many disciplines, including the design of highway pavements. (7) Additionally, this experimentation provided validation for a computational model developed by the UIUC. This 3-D finite element model will be composed of multiple crossties and a detailed fastening system in order to perform quick parametric analyses (e.g. the

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Resilient(Concrete(Crosstie(and( Fastening(System(Designs ...

FTA$Concrete$Crossties$and$Fasteners$ –Project$Overview Slide1 Resilient(Concrete(Crosstie(and(Fastening(System(Designs(for(Light(Rail,(Heavy(Rail,(and(Commuter(Rail

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Field Study of Load Path in Rail and Concrete Crosstie System

Concrete crossties provide excellent durability and capacity, which allow them to outlast standard tim- ber crossties in tracks with high degrees of curvature and extreme weather exposure [1]. Concrete cross-ties also offer improved track geometry retention for high speed rail and heavy freight lines [2]. Concrete crossties are experiencing a wide variety of failure mechanisms with the ...

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FIELD TEST PROGRAM OF THE CONCRETE CROSSTIE AND

through ever increasing freight tonnages and development of its high speed rail program, the design and performance of concrete crossties and elastic fastening systems must be upgraded. As a part of a study aimed at improving concrete crossties and fastening systems, field experimentation was performed at the Transportation Technology Center (TTC) in Pueblo, CO by researchers from the ...

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Concrete Crossties: New Railroad Design - Galesburg ...

13/08/2020  Concrete Crossties: New Railroad Design. August 13, 2020 Sarah Watkins Comment. Traveling via train has become safer and more convenient as engineers and railroad employees continue to improve track infrastructure components. This is what the researchers from RailTEC or the Rail

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Experimentation and Modeling of Concrete Crossties and ...

– Transit Significant quantities (millions) *Approximate. 5 Rail Field Gauge Concrete crosstie Shoulder Shoulder Clip Clip Insulator Insulator Rail pad assembly Fastening System Components. 6 Complete System 8 -9 ft 5 6 .5 in 8 -13 in 6 -10 in Prestress wire or strand I nsulator Clip Shoulder insert Tie pad between rail base and rail seat. 7 Outline • Background and Research Justification ...

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Resilient Concrete Crosstie and Fastening System Designs ...

Field results indicated the need for development and application of a probabilistic design method for the flexural capacity of concrete crossties. A prototype crosstie for light rail transit infrastructure was designed, and a design process based on structural reliability analysis concepts was developed. New (proposed) designs are more economical, having a center negative moment capacity ...

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Field Study of Load Path in Rail and Concrete Crosstie System

Concrete crossties provide excellent durability and capacity, which allow them to outlast standard tim- ber crossties in tracks with high degrees of curvature and extreme weather exposure [1]. Concrete cross-ties also offer improved track geometry retention for high speed rail and heavy freight lines [2]. Concrete crossties are experiencing a wide variety of failure mechanisms with the ...

Get Price

Investigating the Concrete Crosstie and Fastening System ...

recent years, mechanistic design has been a common approach in many disciplines, including the design of highway pavements. (7) Additionally, this experimentation provided validation for a computational model developed by the UIUC. This 3-D finite element model will be composed of multiple crossties and a detailed fastening system in order to perform quick parametric analyses (e.g. the

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Crossties for Transit Track

However, transit crossties and rail fasteners and anchors to be installed on direct current (de) traction systems must provide higher resistance to minimize electrical leakage and the resultant elec­ trolytic corrosion of adjacent pipelines and struc­ tures. Resistance values of up to 1,000,000 ohms be­ tween each rail seat and ground have been specified for transit crossties. 2. Electrical ...

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Design of Concrete Crossties and Fastening Systems ... - MyTRB

10/01/2016  This workshop will focus on the latest research on concrete crossties and fastening systems for rail transit, intercity passenger rail, and heavy-haul freight railroads. Topics will include field and laboratory experimentation and analytical modeling to better inform the design of systems with the objective of increasing component life cycles. Presentations will be given by academic and ...

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Field Testing of Concrete Crossties and Fastening Systems ...

04/11/2013  Field Testing of Concrete Crossties and Fastening Systems for the Understanding of Mechanistic Behavior J ... on North America’s railway infrastructure through ever increasing freight tonnages and development of its high speed rail program, the design and performance of concrete ties and elastic fastening systems must be improved. As a part of a study funded by the Federal Railroad ...

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FIELD TEST PROGRAM OF THE CONCRETE CROSSTIE AND

through ever increasing freight tonnages and development of its high speed rail program, the design and performance of concrete crossties and elastic fastening systems must be upgraded. As a part of a study aimed at improving concrete crossties and fastening systems, field experimentation was performed at the Transportation Technology Center (TTC) in Pueblo, CO by researchers from the ...

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Rail Cant Measurement of Concrete Crossties (Part 1 of 2 ...

04/01/2014  The intent of this collaborative effort is to provide practical guidance for manual and automated inspections of concrete crossties, and to reduce the number of track geometry-caused derailments that occur when the rail seat pad material deteriorates and exposes the rail base to the concrete (see Figure 2). The deterioration, or abrasion, is the result of a compressive load and/or the ...

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