Structural Integrity of Pattullo Bridge with SSA-ER Accelerometers

The new Pattullo Bridge, a significant infrastructure development spanning the Fraser River to connect New Westminster and Surrey, is a four-lane cable-stayed bridge set to open in 2025. This bridge is expected to handle significant traffic loads and face various environmental stressors such as strong winds, temperature variations, and potential seismic activity due to its geographical location. These factors pose a continuous risk to the bridge's structural integrity and longevity. Therefore, it is imperative to have a reliable and continuous monitoring system to detect any signs of structural wear or failure early. The challenge lies in accurately identifying potential issues that could arise from the daily operational and environmental stresses the bridge will endure.

In response to the critical need for sophisticated monitoring, the SSA-ER series accelerometers were selected for their exceptional sensitivity and precision in detecting minute structural movements, which are often precursors to potential issues. These accelerometers are meticulously placed at strategically important points across the bridge structure. They continuously record the bridge's dynamic responses to various stresses, including regular traffic burdens, environmental influences like wind and temperature, and seismic forces. The high-resolution data collected is continuously transmitted for analysis, focusing on identifying any abnormal patterns or emerging stress points that could signify structural compromise. This proactive approach aims to address potential problems before they escalate into serious structural failures.

The integration of SSA-ER accelerometers into the bridge’s monitoring framework has revolutionized how structural health is managed, providing a comprehensive overview of the Pattullo Bridge's condition in real time. This system allows for the early detection of signs of wear or structural weaknesses, which is crucial for scheduling maintenance or adjustments without major disruptions. Additionally, the continuous flow of data aids in identifying long-term trends in structural degradation or unexpected issues such as unusual resonance frequencies. These insights are vital for proactive interventions, ensuring the bridge remains safe and operational for its expected lifespan. Moreover, the successful implementation of this monitoring system establishes a new standard for future infrastructure projects, emphasizing the importance of advanced sensor technology in modern engineering.