Ballastless track system

A ballastless track system comprising:

• a base;
• a track slab arranged above the base;
• a poured-field layer arranged between the base and the track slab, the poured-field layer being formed by filling self-compacting concrete, emulsified asphalt cement mortar or resin mortar, and an inside of the poured-field layer being provided with a first steel bar structure;
• two rows of rail-seat arranged on the track slab in parallel;
• and
• rails arranged on the rail-seat,
• wherein the base is provided with a position-limiting structure acting on the poured-field layer,
• wherein the position-limiting structure is a position-limiting lug boss,
• wherein the base comprises a position-limiting groove in the extension direction,
• wherein the position-limiting lug boss is formed by protruding the poured-field layer into the position-limiting groove,
• wherein a cross section of the position-limiting lug boss is rectangular,
• wherein cushion layers are provided only on two opposite planes in the longitudinal direction or on two opposite locations in a transverse direction or on four peripheral side faces of the position-limiting groove of the base,
• wherein the cushion layer is provided close to a side of the position-limiting groove,
• wherein the cushion layer is a double-layer structure,
• wherein the double-layer structure comprises a foam plate outer layer and a rubber inner layer located in vertically adjacent contact, and
• wherein a thickness of the cushion layer is greater than or equal to 5 mm, and smaller than or equal to 50 mm.