Instrumentation, Testing and Monitoring of a Newly Constructed Reinforced211 Concrete Deck-on-Steel Girder Bridge: Phases 1 and 2

摘要

The research project aimed at exploring, in two phases, the issues and211u001eadvancement of the state-of-knowledge in instrumented monitoring of bridges. The 211u001efirst phase necessitated a rigorous investigation of commercially available 211u001ehardware for bridge monitoring in terms of cost, laboratory verification, field 211u001eaccuracy, and useful lifetime. In the second phase, the initial design of a 211u001emonitor in terms of cost, laboratory verification, field accuracy, and useful 211u001elifetime. in the second phase, the initial design of a monitor system for a 211u001etypical three-span steel-stringer bridge was followed by the installation of the 211u001escaffolding and wireway framework; 54 selected high-speed and long-term 211u001etransducers on steel girders; a weather station, and a computer-controlled data 211u001eacquisition and processing station on a recently constructed bridge in Cincinnati 211u001e(No. HAM-42-0992). One of the approaches in non-destructive bridge testing is the 211u001euse of diagnostic load testing and instrumented health monitoring. Such 211u001etechniques can provide quantitative, comprehensive, and damage sensitive 211u001einformation about the bridge. Instrumentation that is placed on the structure is 211u001ecomposed of static (strain gages, displacement gages, tiltmeters, thermocouples, 211u001epressure tranducers) and dynamic sensors (accelerometers, velocity tranducers).