What are the best sensors for structural health monitoring of bridges?

The key to safe and sustainable bridges

In a time when infrastructure is aging and traffic loads are increasing, it is essential to closely monitor the health of bridges. Structural Health Monitoring (SHM) using advanced sensors offers a proactive approach to ensure bridge integrity and plan timely maintenance.

The role of sensors in SHM

SHM systems use a variety of sensors to collect real-time data about the physical condition of bridges. This data helps engineers identify potential problems before they become critical, increasing safety and extending the life of the structure.

Top 5 sensors for bridge monitoring

1. Accelerometers

Accelerometers measure vibrations and dynamic movements of bridges. They are crucial for detecting changes in structural response, such as shifts in natural frequencies that can indicate damage or degradation.

2. Strain Gauges (Strain Gauges)

Strain gauges measure the deformation of bridge components under load. They provide insight into stress distributions and help identify overstressed or damaged areas.

3. Fiber Optic Sensors (Fiber Bragg Grating – FBG)

FBG sensors use light signals in fiber optics to obtain precise measurements of strain, temperature and deformation. They are resistant to electromagnetic interference and suitable for long-term monitoring.

4. Tilt sensors (Tiltmeters)

Tilt sensors detect changes in the angle or slope of bridge components. They are effective for monitoring foundation movements and structural shifts.

5. GPS sensors

GPS sensors provide precise positional data, allowing slow movements and deformations of bridges to be tracked over time. They are particularly useful for monitoring large or remote structures.

Implementation of SHM systems

Integrating these sensors into a SHM system enables operators to:

• To perform real-time monitoring of structural integrity.
• To plan preventive maintenance and avoid unexpected downtime.
• To ensure user safety through early detection of potential issues.

For effective implementation, it is advisable to collaborate with specialized engineers and use advanced data analysis platforms that are compatible with various sensor types.

Ready to see how Snowflake works?

Using the right sensors is essential for a successful SHM program. By investing in high-quality sensor technologies, bridge operators can increase safety, reduce maintenance costs and extend the life of bridges.

For more information on specific sensors and implementation strategies, please contact specialized SHM service providers or technical consultants.

Dexman

We at Dexman know better than anyone that the right information is the most important thing. Because if a measurement is not correct, the solution is of no use to you. This applies not only to the solutions we offer, but also to the way in which we communicate. At Dexman, we stand for quality, service and solution orientation. In this, it is important to provide the right information, offer a good solution and be honest with each other.

Dexman is a supplier with a wide range of load cells, weighing platforms, pallet scales, crane scales,  force sensors, torque meters, measuring amplifiers, pressure sensors en displacement sensors. You can contact us for standard versions, but also for custom-made components and complete weighing solutions. The choice of the right components usually starts with extensive advice.

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