Bridges are dynamic structures subject to constant loading, environmental aggression, and aging. At Wang Technology, our bridge monitoring solutions go beyond basic compliance; we provide the precision data needed to extend the operational life of these critical assets.
Whether for a new long-span suspension bridge or a historical rehabilitation project, our systems ensure structural safety from the first day of construction through decades of maintenance.
We deliver a "pulse check" on your infrastructure, utilizing real-time sensors to track stress, strain, and movement under live traffic loads. This proactive approach allows owners to mitigate risks, optimize maintenance budgets, and prevent catastrophic failures before they occur.
We deploy a multi-layered sensor network tailored to the specific mechanical behavior of your bridge type (Suspension, Truss, Arch, or Girder).
Our holistic SHM systems act as a central nervous system for the bridge. By integrating data from disparate sensors (strain gauges, accelerometers, temperature probes), we verify that the bridge is behaving according to its design model. This is essential for validating load ratings and identifying "hidden" damage that visual inspections miss.
We utilize high-precision tiltmeters and Automated Motorized Total Stations (AMTS) to monitor the verticality of bridge piers and pylons. This allows us to detect minute rotational movements caused by uneven settlement, thermal warping, or impact events. For long-span bridges, we integrate GNSS (GPS) sensors to track global displacement of the deck and towers with millimeter accuracy.
Understanding how a bridge reacts to traffic is key to predicting its remaining life. We install vibrating wire and foil strain gauges on critical members (girders, truss chords) to measure stress cycles in real-time. This data is used to calculate fatigue life usage and verify the structure's capacity to handle heavy or permit-load vehicles.
Excessive vibration can lead to structural fatigue and user discomfort. Our triaxial accelerometers monitor the bridge's dynamic response to wind and traffic. By analyzing changes in the bridge’s "natural frequency" over time, we can detect loss of stiffness or internal damage (such as a cracked girder) that might otherwise be invisible.
Salt and moisture are silent killers of concrete and steel bridges. We embed sensors and probes directly into the concrete deck and substructure. These sensors detect the onset of rebar corrosion and chloride ingress before spalling occurs, allowing for targeted preventative maintenance rather than costly full-depth repairs.
Scour Monitoring: The leading cause of bridge failure is not structural, but hydraulic. We install sonar and magnetic sliding collar sensors on riverbed piers to monitor sediment erosion (scour) during storm events, triggering instant alarms if foundation stability is threatened.
Expansion Joint Monitoring: We install displacement transducers (LVDTs) at expansion joints to verify they are opening and closing correctly with temperature changes. Seized joints can transfer massive, unintended thermal loads to the bridge structure, causing cracking.
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