SHAKING TABLE TEST OF PILE SLAB TRACK WITH GABION LAID BETWEEN THE HEAD PART OF IMPROVEMENT PILE AND COCRETE SLAB

We have developed the pile slab track soil embankment using the material which is recycling soil excavating tunnels near sites. This embankment has high performance to reduce seismic settlement of concrete slab confirmed by the shaking table test. But, it has one problem. This problem is the displacement of slab by flowing granular rocks between the slab and chemical piles. We propose a method of a large gabion to package granular rocks between the head part of improvement pile and concrete slab. And, we confirm the property of the large gabion method by actual size loading tests. This paper describes shaking table test results of the 1/10 scale model of pile slab embankment with large gabions inserted between improvement piles and the concrete slab.