Abstract
Taking vibration wave induced by road roller as a research object, terrain effect characteristics in propagation of periodic vibration wave were studied through the ground vibration monitoring. Data analysis results show that, vibration distance, frequency and terrain condition were the main factors affecting the attenuation speed of the ground vibration. On the flat terrain, the ground vibration velocity attenuated in negative exponential function form with distance; In complex terrain condition, the attenuation characteristic changed. Vibration velocity was obviously amplified when the location of the measuring point is higher than the source, and decreased more rapidly at the lower place. The increase of vibration frequency enhanced the topographic effect, the amplification of ground vibration caused by higher frequency vibration was more pronounced. The mathematical model of periodic vibration wave attenuation was proposed according to the characteristics of vibration velocity. The model provided an effective reference for the calculation of the safety distance which took the frequency, the height difference and the distance into account.
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