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:
  Cracking Data Collection Field Studies Finite Element Method Girders Instrumentation Piles (Supports) Remote Sensing Steel Bridges Structural Health Monitoring Temperature

  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.
  
  
• Format:
  PDF
• Funding:
  SPR-2256
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:6c5ea1d5a9a462349c2e3581ea8849d36146e019e6daa0a37b28655e3aef0fad
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28391/dot_28391_DS1.pdf
• File Type:
  [PDF - 1007.15 KB ]