Bridge monitoring: what to measure, how to read data, and when to act
A guide for asset owners and engineers: which quantities are measured on a bridge, why temperature is the background for every measurement, what natural frequencies tell you, and how to set thresholds and procedures so that an alarm SMS ends with a decision, not a discussion.
- A bridge lives daily and seasonally, and that is normal
- What to measure on a bridge: element → quantity → sensor
- Temperature as background: the multi-axis chart and why thresholds lie without it
- Natural frequencies: what a change may mean, and what it may not
- Monitoring during works: proof load tests, launching, cable erection, repairs
- Thresholds and procedures for the road authority: when you close a lane
- The "do I close the lane" procedure in five steps
- Hybrid systems: DFOS for crack detection, point sensors for trends
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