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
  • Inspection
  • California
  • 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.
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• Format:
  PDF
• Funding:
  DRI Research Task No. 0081 ; Contract No. 59A0195
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27667/dot_27667_DS1.pdf
• File Type:
  [PDF - 12.11 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:5f4a89d936969769b87d4755db7e4b58a38bdc061ac0f7fa639bc7508a03aaf3