Safety factor increase to fatigue limit states through shear spiking for timber railroad bridge rehabilitation - phase I.

Details

• Creators:
  Dao, Thang ; van de Lindt, John
• Corporate Creators:
  Colorado State University
• Corporate Contributors:
  United States. Dept. of Transportation. Research and Innovative Technology Administration
• Subject/TRT Terms:
  • Railroad bridges
  • Load tests
  • Fatigue tests
  • Rehabilitation (Maintenance)
  • Wooden bridges
  • Algorithms
  • Spikes
• Publication/ Report Number:
  MPC 14-273
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Mountain Plains Consortium
• Abstract:
  The overall project is to demonstrate the effectiveness of shear spiking (technique alrea ; dy developed ; through a previous project). Many timber railroad bridges are deficient but i ; t is too costly to replace them; ; hence ; , ; inexpensive repair techniques are needed. The proposed project will provide the necessary ; documentation of the effectiveness o ; f this newly developed mitigation technique under realistic loads ; using new equipment available from a National Science Foundation grant to Colorado State University. ; This will ultimately be accomplished through a series of spatio ; - ; temporal fatigue tests on ; stringers for both ; non ; - ; repaired and repaired. The timing and locations of the loading will be determined from influence line ; analysis of a typical freight train(s). The results will be used as leverage and/or proof ; - ; of ; - ; concept to ; approach the American Rail ; way Association for additional funding. This report presents the intermediate ; results of the project, which is ; designated herein as Phase I. ; Phase I focused on development of the ; actuator control algorithm ; , ; which was successfully tested in the Colorado Sta ; te University Structural ; Engineering Laboratory in the spatio ; - ; temporal test frame using seven actuators simultaneously in force ; control.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28337/dot_28337_DS1.pdf
• File Type:
  [PDF - 2.44 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:182098d4350a8aa35442b3ab544c114f23a3cae53a98fa76a301509c032ae178