Constitution of 1812 Bridge (object state)
A condition of an object at a particular time, reflecting the object's ability to fulfil it's requirements.
Properties
Element type
:
Object state
Summary
:
"In order to have a first reference of the stay cable forces before the bridge was open to traffic in 2015, dynamic auscultation of them was performed. The forces were obtained through the vibrating string analogy (see figure below). As planned, this auscultation has been repeated in 2020, five years later, finding minor differences in the forces.
The monitoring system inherited from the construction phase has been kept almost entirely for the monitoring of the bridge in service. This system allows controlling both the actions (thermal and wind) and the structural response (gradients, forces, accelerations, etc.). In addition, it is useful to maintain a service of automatic alerts based on 10-minute average wind speeds.
Since the bridge was open to traffic, a large amount of data has been recorded that is periodically analyzed from different points of view (statistical-descriptive, correlational and spectral) to verify through this experimental analysis the correct structural behavior."Prior information
:
Drawings, Design documents, Previous inspections, Design standards, Monitoring data, Numerical models
Performance indicator
:
Deformation, Displacement, Dynamic response (acceleration/damping/frequencies), Other actions (wind/temperature/earthquake)
Relations with other elements
:
Concluded object state Constitution of 1812 Bridge (object state)
Other inspection/monitoring method: Electronic sensors with static/dynamic data acquisition system, real-time transmission system and cloud web platform.