Structural Health Monitoring Of Klehini River Bridge

This paper provides the reader with a methodology to evaluate the structural condition of a bridge in a remote area in eastern Alaska, in the United States. It was the objective of this work to develop a Structural Health Monitoring (SHM) program for the Alaska Department of Transportation (AKDOT) for the purpose of improving both bridge safety and asset management. The idea is to evaluate structural integrity, serviceability, and to gather information to help determine if the structure is undergoing change. This is done by monitoring structural response (strains, accelerations, mode shapes and natural frequency). A three-dimensional element finite element model of the bridge is recommended to track behavior with change. This model should be part of the SHM and used to evaluate the sensitivity of change. A modal analysis combined with results from field inspections are proposed for use in establishing a bridge SHM system. The system has a preferred sensor layout, system integrator and instrumentation suitable for Alaska’s remote locations and harsh weather conditions. A variety of sensors are proposed to measure and monitor structural and environmental conditions. These recommendations are provided to assist in evaluating safety and performance of the Klehini River Bridge. SHM will act as a safety and management tool. It is to complement traditional bridge inspection methods, provide overload warnings and help with asset management. Implementation of an SHM may reduce the inspection manpower, assist with early detection of deteriorated and damaged elements and provide the tools to obtain both an optimum inspection cycle and improved repair schedules.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AHD35 Bridge Management.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Xiao, Feng
  • Hulsey, J Leroy
  • Sheng, Gang
• Conference:
  • Transportation Research Board 93rd Annual Meeting
  • Location: Washington DC
  • Date: 2014-1-12 to 2014-1-16
• Date: 2014

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References;
• Monograph Title: TRB 93rd Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Asset management; Condition surveys; Finite element method; Rehabilitation; Sensors; Structural health monitoring; Weather conditions
• Geographic Terms: Alaska
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; I60: Maintenance;

Filing Info

• Accession Number: 01514840
• Record Type: Publication
• Report/Paper Numbers: 14-0807
• Files: TRIS, TRB, ATRI
• Created Date: Feb 21 2014 3:16PM