Centenario 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 2018, a campaign was carried out to assess the structural health of the bridge. Due to the signs of corrosion in the anchors and other deteriorations found, it was decided to proceed with the replacement of the stay cables. However, the time required to develop the replacement project, contract, and undertake the replacement (keeping traffic on the bridge) was estimated to be over 3 years. As the bridge is a critical infrastructure and the traffic level is very high, the decision was made to install a real-time structural remote monitoring system on the bridge, mainly focused on the 88 cable forces.
The monitoring system has returned the main following findings:
- The cables forces have a daily cycle oscillation due to traffic and an annual cycle due to temperature, both within the expected range. There has been no drift in their value that can be attributable to corrosion
- A phenomenon that had not been observed before on the bridge has been detected: several episodes of very high vibrations (> 2g) caused by the combined wind-rain effect have been recorded."
Prior information
:
Drawings, Previous inspections, Design standards, Monitoring data, Numerical models
Performance indicator
:
Displacement, Dynamic response (acceleration/damping/frequencies), Other actions (wind/temperature/earthquake)
Inspection method
:
Other
Relations with other elements
The inspection method used in this case study to determine the object state was "Other". This can include any of the following surveying technologies. Click one of the links below for more information:
Other
- (No corresponding surveying technology was found.)
Another performance indicator: Concrete, steel, and air temperatures
Inspection Method: Electronic sensors with static/dynamic data acquisition system, real-time transmission system, and cloud web platform