PROPERTY OF GABION LAID BETWEEN THE HEAD PART OF IMPROVEMENT PILE AND CONCRETE SLAB FOR PILE SLAB TRACK

Abstract

We have developed the pile slab track embankment which makes use of the material of poor quality, but can support concrete slab by soil improvement piles. Up to now, we have confirmed the effect of this method by the shaking table test. As a result, the method can reduce seismic settlement of concrete slab compared with that of concrete slab without the support by the piles. However, it was confirmed that concrete slab subsided rather than expected by slipping out of the macadam existing between a pile head part and concrete slab. This paper describes, based on the loading test results, of the gabion laid between the head part of improvement pile and concrete slab, with was devised in order to prevent slipping out of macadam