A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Court Street Bridge Monitoring and Load Testing
This report discusses instrumentation, deck pour monitoring, and load testing of Court Street Bridge, which carries Route 96 over Route 17 and the Susquehanna River into the Village of Owego, Tioga County, New York. The bridge is a six-span continuous steel structure, about 338-m long and 14.45-m wide. It consists of stringers, floor beams, two trusses (upstream and downstream), and a light weight concrete deck. The deck was built composite with the stringers as well as the top chords of the two trusses. The top chords being composite with the deck introduces secondary moments in the structure and adds to the complexity of the analysis. The motive for the project was to monitor stresses during the first three deck casting pours and determine service load axial forces and secondary moments in the bridge members. Five downstream truss members were instrumented with vibrating wire gages to record strains in those members during the deck pours, to determine deck load axial forces and moments. The instrumented members included a top and a bottom chord, two diagonals, and a vertical. To investigate service live load axial forces and moments, additional strain data was also collected during a load test, using trucks of known weights and configurations. The load test was conducted immediately after construction was completed and before the bridge was opened to traffic. Finite element (FE) analysis was performed to determine the forces and moments in the truss members due to the load test trucks. The FE analysis and test results were then proportioned to estimate actual service load forces and moments in the bridge members.
Court Street Bridge Monitoring and Load Testing
This report discusses instrumentation, deck pour monitoring, and load testing of Court Street Bridge, which carries Route 96 over Route 17 and the Susquehanna River into the Village of Owego, Tioga County, New York. The bridge is a six-span continuous steel structure, about 338-m long and 14.45-m wide. It consists of stringers, floor beams, two trusses (upstream and downstream), and a light weight concrete deck. The deck was built composite with the stringers as well as the top chords of the two trusses. The top chords being composite with the deck introduces secondary moments in the structure and adds to the complexity of the analysis. The motive for the project was to monitor stresses during the first three deck casting pours and determine service load axial forces and secondary moments in the bridge members. Five downstream truss members were instrumented with vibrating wire gages to record strains in those members during the deck pours, to determine deck load axial forces and moments. The instrumented members included a top and a bottom chord, two diagonals, and a vertical. To investigate service live load axial forces and moments, additional strain data was also collected during a load test, using trucks of known weights and configurations. The load test was conducted immediately after construction was completed and before the bridge was opened to traffic. Finite element (FE) analysis was performed to determine the forces and moments in the truss members due to the load test trucks. The FE analysis and test results were then proportioned to estimate actual service load forces and moments in the bridge members.
Court Street Bridge Monitoring and Load Testing
O. Hag-Elsafi (author) / J. Kunin (author) / S. Alampalli (author)
2006
86 pages
Report
No indication
English
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