Connecticut permanent long-term bridge monitoring network, volume 4 : monitoring of curved steel box-girder composite bridge - I-84 EB Flyover to I-91 NB in Hartford (bridge #5868).

Details

• Creators:
  Scianna, Adam ; Prusaczyk, Stephen ; Jiang, Zhaoshuo ; Christenson, Richard E. ; DeWolf, John T.
• Corporate Creators:
  Connecticut Transportation Institute
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Steel bridges
  • Girders
  • Structural health monitoring
  • Remote sensing
  • Field studies
  • Temperature
  • Piles (Supports)
  • Cracking
  • Instrumentation
  • Data collection
  More +
• Publication/ Report Number:
  CT-2256-5-13-6
• Resource Type:
  Tech Report
• Geographical Coverage:
  Connecticut
• Corporate Publisher:
  Connecticut. Dept. of Transportation
• Abstract:
  This report describes the instrumentation and data acquisition for a continuous curved steel box-girder composite bridge in ; Connecticut. The computer-based remote monitoring system was installed in 2001, with accelerometers, tilt meters and ; temperature sensors. The bridge is part of a network of bridges in a long-term research project to evaluate the performance of a ; variety of bridges in Connecticut. Data has been collected over a multi-year period using normal vehicular traffic. A series of ; papers has been generated to explore the behavior of this bridge and to provide information to the Department of Transportation. ; The first study involved the development, implementation and evaluation of the initial data obtained from the monitoring system. ; This included a study of the large temperature gradients due to both annual climate changes and the position of the sun during the ; day. The goal was to explain the cause of torsion cracking in the tall slender concrete interior column supports. The second study ; used data collected over a multi-year period to develop benchmark parameters to use for structural health monitoring. Methods ; reviewed included natural frequency based methods, the modal assurance criterion, the signature assurance criterion, sensitivity ; coefficients of natural frequencies, and tilt meter data. The goal was to use ambient field monitoring data to detect changes in the ; structural integrity of the bridge. In the next study the improvement in bandwidth of the upgraded system is identified. The final ; study described in this report identifies and quantifies different data qualification measures needed for the structural health ; monitoring of this bridge.
  More +
• Format:
  PDF
• Funding:
  SPR-2256
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28391/dot_28391_DS1.pdf
• File Type:
  [PDF - 1007.15 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:6c5ea1d5a9a462349c2e3581ea8849d36146e019e6daa0a37b28655e3aef0fad