Structural Health Monitoring of a Bridge Deck Reinforced with Carbon Fiber Reinforced Polymeric Grids in Rollinsford, New Hampshire

Conference Proceeding

Abstract

  • In December, 2000, the Rollins Road Bridge in Rollinsford, New Hampshire was opened to traffic. The Rollins Road Bridge was constructed with funding from the Innovative Bridge Research and Construction (IBRC) program administered by the Federal Highway Administration (FHWA). A requirement of the IBRC program is the use of high performance and innovative materials. The deck of the ,Rollins Road Bridge is high-performance concrete (HPC) reinforced with carbon fiber reinforced polymers (CFRP). These materials were selected to create a durable concrete superstructure that is free of metallic reinforcement. Also as part the IBRC program, Rollins Road Bridge was instrumented with a series of strain and temperature sensors to monitor and study the structural behavior of the bridge deck. This paper describes a program of structural health monitoring for the Rollins Road Bridge, the first bridge in the United States to contain high performance concrete (HPC) and state-of-the-art carbon fiber reinforced polymeric (CFRP) grids). Over 80 fiber optic sensors, measuring strain and temperature, were installed in the bridge during construction, including both the CFRP and concrete material in the deck and the concrete girders. Strain distributions collected from these fiber optic sensors shows that the maximum strains in the actual bridge were less than 100 micro strains, while deflections of the girders and deck were less than 0.1 in (2.5 mm) under a sustained truck load within the first two years of service in 2002. This paper focuses on the potential use of the collected data, from both strain and temperature sensors to conduct in-service performance monitoring. The recent data will be compared with the baseline data collected in 2002.
  • Authors

  • Bell, Erin
  • Bowman, Martha
  • Presented At Event

  • ASCE Structures 2007  Conference