Constitution of 1812 Bridge (analysis)
A detailed assessment of the condition of an object.
Properties
Element type
:
Analysis
Summary
:
"The bridge is monitored, since the construction, with 424 sensors, most of them static but some dynamic.
The static system consists of 154 strain gauges embedded into the fresh concrete, 127 strain gauges on the steel surface, 55 thermocouples, 17 tiltmeters, 40 load cells in the stay cables, and 4 sensors on bearings at the piers. Every five minutes, all these parameters are recorded. 19 accelerometers, 4 anemometers, and another 4 weather vanes integrate the dynamic monitoring system, which is triggered automatically when certain threshold values are exceeded.
To assess the structural behavior, the measurements are compared with the theoretical values and its evolution is lookout. Moreover, the wind measurements are used to regulate the traffic on the bridge."Case type
:
Consulting
Initiation of assessment
:
Anticipated change of design working life, Other
Predominant verification type
:
Design value criteria
Predominant verification scale
:
Structural system
Structural analysis
:
Serviceability limit state, Other
Information updating
:
Direct bayesian, Direct non-bayesian
Physical intervention
:
Other
Operational intervention
:
Maintenance, Monitoring
Relations with other elements
Other initiation of assessment: Control during construction and surveillance during service life
Other verification scale: Structural System wind effects on traffic
Structural analysis_4: Proxy limit state (e.g. corrosion initiation)