Abstract
As shown Fig. 1, both up and down lines of Hukuchiyama between Amagasaki and Tsukamoto run at the distance of about 0.5 kilometers at maximum each other. As part of the project of twolevel crossing (railway and road), new embankment is constructed on both sides of the previous embankment of the down line to bind the both up and down lines together.
As the place of construction is narrow and close to private houses, the condition of construction is sever; not in use of big machines, less noisy and less vibration and dugging as little ground as possible.
And besides, though new embankment would be about 7 meters tall, the subsoil is poor: N=2∼3. Thus, it would have been unavoidable to drive piles, if the usual retaining wall was constructed. This is difficult on such a narrow space.
To overcome this difficulties, we drivel soil cement colums by small machines and constructed the reinforced embankment.
This new embankment is confirmed to be resistant to earthquake, as it was not suffereded from Hanshin-Awaji earthquake. Our method in more detail is shown below.
