Abstract
The hybrid-type vibration isolation wall using gas cushions is a new technology to isolate against the propagation of environmental ground vibrations. This type vibration isolation wall is one of the vibration isolation methods by constructing the open trench-type wall of the triple structure composed of gas cushions, soil cement walls and steel sheet piles in the ground. This vibration isolation wall can be expected to have same effect with open trenches that is considered to be the most effective means.
Firstly, the authors described in this paper that the new applicable construction method when the ground construction conditions are not severe. Then, the vibration isolation performance of this hybrid-type wall is examined by field measurements with a vibration exciter and the railroad traffic vibration. Also, the vibration isolation mechanism is confirmed by the two dimensional FEM analysis.
