Structural health monitoring and condition assessment of Chulitna River Bridge : sensor selection and field installation report.

Details

• Creators:
  Hulsey, J. Leroy ; Brandon, Patrick ; Xiao, Feng
• Corporate Creators:
  Alaska University Transportation Center
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Structural health monitoring
  • Condition surveys
  • Bridges
  • Real time information
  • Monitoring
  • Fiber optics
  • Data collection
  • Information storage and retrieval systems
• Publication/ Report Number:
  INE/AUTC 12.30 ; 4000(111)A
• Resource Type:
  Tech Report
• Geographical Coverage:
  Alaska
• Corporate Publisher:
  Alaska. Dept. of Transportation and Public Facilities ; Alaska University Transportation Center
• Abstract:
  The Chulitna River Bridge, built in 1970, is located at Historic Mile Post 132.7 on the Alaska Parks Highway between Fairbanks and Anchorage, Alaska. The Parks ; Highway is the most direct route connecting Anchorage, Fairbanks, and Prudhoe Bay. Heavy overload vehicles with loads up to 410,000 pounds regularly travel this ; route. The original bridge was 790 feet long, with five spans and is a continuous bridge with two exterior steel plate girders and three sub-stringers. It had a cast-in-place ; concrete deck 34 feet wide. In 1993, the bridge deck was increased to 42 feet 2 inches by replacing the original cast-in-place deck with precast concrete deck panels. To ; accommodate the increased loads, the two original exterior plate girders were strengthened, three new longitudinal steel trusses were installed utilizing the original ; stringers as top chords, and steel bracing was added to the piers.In August, 2012, the research team will design and install a real time fiber optic structural monitoring ; system on the bridge to determine if the girders are over-stressed for standard highway loads and permit vehicles. The final working thresholds will be established for ; automated notification if changes occur in structural response or established thresholds are exceeded. After September 2012, the research team will continue monitoring ; and analyzing the experimental data until December 31, 2013. The test results will be used to identify changes in load distribution for the girders and trusses. It will also ; be used to identify if structural changes occur. Further, the information will be used to provide alerts when sensing systems approach or exceed established limits. It will ; also be used to develop a protocol to apply an SHM program to bridge monitoring on other bridges in Alaska.
  More +
• Format:
  PDF
• Funding:
  AUTC#510015 ; DTRT06-G-0011 ; T2-11-08
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18327/dot_18327_DS1.pdf
• File Type:
  [PDF - 3.06 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:0a02408069a406cd05aa73dd0a53b765116598e3f4a440946dd872d00af06194