REDUCTION OF TRAFFIC-INDUCED VIBRATION BY SOILBAGS ("DONOW")

It has been shown experimentally and theoretically that a soilbag which is merely wrapped with a thin bag has unexpectedly high compressive strength, and it can be used as the reinforcement material of building foundation and retaining wall. The piles of soilbags have a unique property of vibration reduction due to their flexibility and individuality (the assembly of discrete soilbags). Based on such a unique property, three methods of vibration reduction are introduced at the place of vibration source (under the traffic road), on the propagation path and at the place of vibration reception (under the building foundation), and are checked by the vibration measurements (vibration level,vibration acceleration and its frequency analysis). In particular, the piles of soilbags can reduce the vibration below 10 Hz (sensitive vibration for human body) effectively, which is difficult to reduce in a usual way.