Development of Acclereration-Record-Based Bridge Weigh-In-Motion

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18105
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: University of Fukui
• Principal Investigator: Suzuki Keigo 福井大学, 学術研究院工学系部門, 講師 (40546339)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 車両重量 / 加速度応答 / 簡易計測

Outline of Final Research Achievements

This study developed acceleration-response based Bridge Weigh-In-Motion(BWIM). The acceleration responses of concrete deck slab due to Live-load in the frequency domain is higher than those of beam; therefore, generic accelerometers can be applied for the developed BWIM. Acceleration records are converted to deflection data with twice trapezoidal integration process. Drift of the base line and noise effects in the process of integration were eliminated by Kalman filter. Three parameters that control the Kalman filter were determined with the integrated deflation data. The integral calculation was performed for each parameter change, and a parameter combination showing the calculation result which had been the closest to the real RC deck’s deflection among them was used. The calculated slab deflection results showed the good agreement with the records of displacement meters. The acceleration-response based BWIM results showed the good results when in not high speed.

Free Research Field

土木工学