A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hillsboro Canal Bridge Monitoring
This report describes the implementation of a testing and monitoring program for bridge 930338 in Belle Glade. Glass-fiber reinforced polymer (GFRP) deck panels and plates were installed over an existing steel superstructure using grouted steel studs. This was done to evaluate the use of GFRP decking as a substitute for steel grid decking. Strain gages and displacement gages were installed on the GFRP deck and the steel superstructure. Bridge tests were conducted in October 2009 and 2010 using a Florida Department of Transportation (FDOT) test truck. Four different load levels were used in each of five different travel paths. Global positioning system (GPS) monitoring enabled the creation of influence lines for each strain gage. The GPS data were also used to confirm that the truck followed the designated travel line and evaluate the sensitivity of the strain readings to load proximity. Shear and flexural distribution factors were obtained from these influence lines. Increases in strain recorded in the right lane between the two bridge tests are attributed to a combination of the cracked and spalled grout leveling layer and a loss of rigidity in the shear stud connections and not necessarily a loss of stiffness of the deck system. Flexural distribution factors were unchanged after one year of service. There was no appreciable composite action detected between the GFRP bottom panel and top plate. Monitoring occurred between October 2009 and April 2011. Steel girder strain gages confirmed that the majority of the heavy traffic traveled in the right lane. Thermocouples confirmed that a thermal gradient developed within the GFRP deck each day and dissipated at night.
Hillsboro Canal Bridge Monitoring
This report describes the implementation of a testing and monitoring program for bridge 930338 in Belle Glade. Glass-fiber reinforced polymer (GFRP) deck panels and plates were installed over an existing steel superstructure using grouted steel studs. This was done to evaluate the use of GFRP decking as a substitute for steel grid decking. Strain gages and displacement gages were installed on the GFRP deck and the steel superstructure. Bridge tests were conducted in October 2009 and 2010 using a Florida Department of Transportation (FDOT) test truck. Four different load levels were used in each of five different travel paths. Global positioning system (GPS) monitoring enabled the creation of influence lines for each strain gage. The GPS data were also used to confirm that the truck followed the designated travel line and evaluate the sensitivity of the strain readings to load proximity. Shear and flexural distribution factors were obtained from these influence lines. Increases in strain recorded in the right lane between the two bridge tests are attributed to a combination of the cracked and spalled grout leveling layer and a loss of rigidity in the shear stud connections and not necessarily a loss of stiffness of the deck system. Flexural distribution factors were unchanged after one year of service. There was no appreciable composite action detected between the GFRP bottom panel and top plate. Monitoring occurred between October 2009 and April 2011. Steel girder strain gages confirmed that the majority of the heavy traffic traveled in the right lane. Thermocouples confirmed that a thermal gradient developed within the GFRP deck each day and dissipated at night.
Hillsboro Canal Bridge Monitoring
J. L. McCall (author) / X. Peng (author) / A. P. Singh (author) / H. R. Hamilton (author)
2011
239 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Composite Materials , Transportation & Traffic Planning , Transportation , Bridge decks , Monitoring , Glass fiber reinforced plastics , Instrumentation , Pavement deflections , Strain gages , Thermocouples , Florida , Hillsboro Canal Bridge , Bridge 930338 , Belle Glade(Florida)
Hillsboro Canal Bridge Monitoring, Summary
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