Monitoring Settlement of a Retrofitting Concrete Beam at a Building

Project Preview

A high rise building’s load bearing concrete beam, which is suspended over a top floor terrace, was slowly deflecting over time. A fix was created to hold the deflecting beam.  The fix is steel beams placed above the beam as a retrofit on the concrete beam.

Resensys Solution

To evaluate and monitor the initial settling/deflection and to confirm effectiveness of retrofit beam (after creating fix), a Resensys structural health monitoring system was deployed on the structure. It consists high precision Tilt SenSpot (inclinometer) sensors. Furthermore, SeniMax data logger with remote communication gateways were installed to collect data from SenSpot gauges and send them to main server and SenScope.

The system has been placed for long term monitoring for indefinite future, proving the effectiveness of the retrofit.

Monitoring Purposes and Methods:

• Measuring settling/deflection of the concrete beam after retrofitting.
• Detect any sudden significant deflection of the retrofitting beam by alert systems.
• Calculating dependence of incline values on temperature (temperature response rate).