Digital image rectification tool for metrification of gusset plate connections in steel truss bridges.

Details

• Creators:
  Higgins, Christopher ; Nguyen, Quang D.
• Corporate Creators:
  Oregon State University
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Truss bridges
  • Metal bridges
  • Gusset plates
  • Structural connection
  • Inspection
  • Photogrammetry Gusset plates--Evaluation
  • Iron and steel bridges--Evaluation
  • Truss bridges--Evaluation
  • Photogrammetry
• Publication/ Report Number:
  FHWA-OR-RD-09-15
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Edition:
  Final report.
• Corporate Publisher:
  Oregon. Dept. of Transportation. Research Unit
• Abstract:
  A method was developed to obtain dimensional data from photographs for analyzing steel truss gusset plate ; connections. The method relies on a software application to correct photographic distortion and to scale the ; photographs for analysis. The approach enables rapid and accurate collection of dimensional measurements ; compared to traditional methods. Users can quickly create AutoCAD drawings by collecting dimensional ; information about the gusset plates from the photographs. The rectified photographs provide a record of field ; conditions that can be compared with subsequent field inspection results to help identify and quantify long term ; changes in visual characteristics. The implementation procedure is straightforward and does not require specialized ; knowledge of photogrammetry. It can be practically employed under field conditions using current technology and ; personnel, and it reduces the likelihood of data entry errors. Dimensional measurements from the method provide ; results that are as good conventional field measurements and are within tolerances that most engineers would find ; reasonable for gusset plate connection capacity evaluations.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/21794/dot_21794_DS1.pdf
• File Type:
  [PDF - 2.44 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:5dadf12aa25e6ca377bdadd94a91d06b5142c4d2989fe2606be9844b69498c252314a384171a7003e1ab58f070502b7d27a18a213f42d3565ea3fc9591f4cd14