Analysis of Time-domain Characteristics of Pavement Acceleration Under the Car moving Load
Abstract
In order to study the time-domain characteristics of pavement vibration acceleration under the car moving load, the collector and
the accelerometer were placed on the pavement for field testing. The results show that when the vehicle speed is 50km/h and the sampling
frequency is 1kHz, the peak value and fluctuation range of road vibration acceleration are the largest. When the vehicle speed is 20km/h and
the sampling frequency is 400Hz, the peak value and fluctuation range of road vibration acceleration are the smallest. With the increasing
of vehicle speed or sampling frequency, the peak value and fluctuation range of road vibration acceleration at the testing point also increase.
This indicates that when the vibration acceleration collection points are denser and the moving load is applied faster, the fluctuation range of
the pavement vibration acceleration will be wider, and the corresponding peak values will also increase.
the accelerometer were placed on the pavement for field testing. The results show that when the vehicle speed is 50km/h and the sampling
frequency is 1kHz, the peak value and fluctuation range of road vibration acceleration are the largest. When the vehicle speed is 20km/h and
the sampling frequency is 400Hz, the peak value and fluctuation range of road vibration acceleration are the smallest. With the increasing
of vehicle speed or sampling frequency, the peak value and fluctuation range of road vibration acceleration at the testing point also increase.
This indicates that when the vibration acceleration collection points are denser and the moving load is applied faster, the fluctuation range of
the pavement vibration acceleration will be wider, and the corresponding peak values will also increase.
Keywords
Field Testing; Car Moving Load; Pavement Vibration; Acceleration
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PDFReferences
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DOI: https://doi.org/10.18686/utc.v10i4.249
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