Vibration-based structural health monitoring of highway bridges.

Details

• Creators:
  Guan, Ho ; Karbhari, Vistasp M.
• Corporate Creators:
  University of California, San Diego. Dept. of Structural Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Bridges California Inspection Vibration
• Publication/ Report Number:
  CA06-0081
• Resource Type:
  Tech Report
• Geographical Coverage:
  California
• Corporate Publisher:
  California. Dept. of Transportation. Division of Research and Innovation
• Abstract:
  In recent years, the condition of aging transportation infrastructure has drawn attention to the maintenance and
  
  inspection of highway bridges. With the increasing importance of life-lines, such as highways, to the national economy
  
  and the well-being of the nation, there is a need to maximize the degree of mobility of the system. This requires not just
  
  routine, or critical event (such as an earthquake) based, inspections, but rather a means of continuous monitoring of a
  
  structure to provide an assessment of changes as a function of time and an early warning of an unsafe condition using
  
  real-time data.
  
  A promising technique, namely Vibration-based Structural Health Monitoring, has been proposed to address this
  
  problem. The basic premise of Vibration-Based Structural Health Monitoring is that changes in structural
  
  characteristics, such as mass, stiffness and damping, will affect the global vibrational response of the structure. In
  
  summary, by studying the changes in measured structural vibration behavior and in essence solving an inverse
  
  problem, the unknown changes of structural properties can be identified.
  
  A new vibration-based structural health monitoring methodology for highway bridges is proposed in this report.
  
  Progress is made in several key areas, including operation modal analysis, damage localization and finite element
  
  model updating. The real-world implementation of a health monitoring system on a highway bridge demonstrates the
  
  effectiveness of the proposed technique and points out directions for future research.
  
  
• Format:
  PDF
• Funding:
  DRI Research Task No. 0081 ; Contract No. 59A0195
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:5f4a89d936969769b87d4755db7e4b58a38bdc061ac0f7fa639bc7508a03aaf3
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27667/dot_27667_DS1.pdf
• File Type:
  [PDF - 12.11 MB ]