Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Railroad bridge"”.
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The Canal Railroad Bridge across the Westfield River
Thesis: B.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1869
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Mitigation of differential movements at railroad bridge transition zones
Railroad transitions are track locations that experience a rapid change in track structure, such as a bridge or crossing. These locations are prone to differential movement and require frequent resurfacing to maintain an acceptable track geometry for both passing freight and high-speed passenger …
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Track model for predicting dynamic responses of railroad bridge approaches
… on the development of a novel train-track-bridge model that can analytically tackle the difficult problem of a railway track transition zone and effectively simulate the dynamic response of a bridge approach subjected to moving train loads. The scope of the research encompassed statistical …
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Description of a design for a single track railroad bridge of 190 feet span
Thesis: B.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1874
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Framework for risk-based management and safety of railroad bridge infrastructure using wireless smart sensors (WSS)
… and comply with new federal regulations on bridge safety, North American railroads are exploring means and methods to improve the management of their bridge networks. Current maintenance, repair, and replacement (MRR) decisions are informed by bridge inspections and ratings. Inspection and …
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Design of a four track railroad bridge over the Bronx River Parkway at Woodlawn N. Y.
Thesis: B.S., Massachusetts Institute of Technology, Department of Civil Engineering, 1933
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Analyses and modeling of track transition site responses from instrumented bridge approaches
"Railroad bridge approaches, which connect open track to bridge structures, commonly experience recurring defects, such as broken superstructure components, excessive deformation, and ballast degradation that may require frequent maintenance. Such deformations or simply referred to as ""bumps at …
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Determination of Lateral Resistance of Deck Tie Fasteners in Smooth Top Bridge Girders
… requirements of deck tie fasteners in curved railroad bridges with smooth top girders. In railroad bridge design, required lateral resistance dictates the spacing of deck tie fasteners. Currently, no provisions exist to aid in the calculation of lateral resistance for systems that include …
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Northern San Francisco Bay Ecological Risk Assessment: Potential Crude by Rail Incident
… developed from a derailment on the Union Pacific Railroad Bridge and discharging 100,000 gallons of Bakken crude oil into the Northern San Francisco Bay. The oil trajectory impacted the Carquinez Strait, Suisun, San Pablo, and northern Central Bays, totaling 64 square miles of water surface and 11 …
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Slope Failure Remediation Design
… mile north of the Burlington Northern Santa Fe Railroad Bridge. The failure took place the week of June 28, 2009 and forced closing of River Road until late fall. A local business was forced to close and traffic was affected throughout the summer. </p><p>Elevation and geological data was used to …
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Structural damage detection using ambient vibrations
… such as normal vehicle traffic on a highway bridge, train passage on a railroad bridge, or wind loads on a tall building. This eliminates the need to apply a special impact or dynamic load, or interrupt traffic on a bridge in regular service. This research developed an approach in which free …
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Modeling and monitoring of the dynamic response of railroad bridges using wireless smart sensors
Railroad bridges form an integral part of railway infrastructure in the USA carrying approximately 40 % of the ton-miles of freight. The US Department of Transportation (DOT) forecasts current rail tonnage to increase up to 88 % by 2035. Within the railway network, a bridge occurs every 1.4 miles …
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Iot framework for condition assessment of railroad bridges
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01