ABSTRACT
Slab tracks (figure 1) are widely constructed in Japanese high speed railways. Those slab tracks were originally developed for viaducts and tunnels; however, in these 10 years, slab tracks are widely constructed on earth structures. Figure 2 shows standard cross section of slab track on the earth structure. Earth structures for slab tracks are required high performance against residual settlement under repeated train loads, because the restoration after excessive settlement is significantly difficult.
