Sleepers types on main tracks

Kilometres of main tracks by type of sleepers since 2006. In general, the rails are fixed on a support (sleepers, longitudinal beams, wood pieces) and, exceptionally, on a solid concrete slab. The sleepers have a double purpose:to keep the two rails in place and thus achieve and maintain the track gauge imposed;to support the rails and transfer the loads of the trains evenly to the ballast. On the main tracks, you will find the following type of sleepers : Wood : in oak or azobeConcrete : two generation, old and newMetal

自2006年以来，按轨枕类型划分的主要轨道长度。通常，铁轨固定在支撑结构（轨枕、纵向梁、木块）上，极少数情况下则固定在坚实的混凝土板上。轨枕具有双重功能：一方面，保持两根铁轨的位置，从而实现并维持规定的轨道间距；另一方面，支撑铁轨并将火车的荷载均匀地传递至道砟。在主要轨道上，您将发现以下类型的轨枕：木制：橡木或阿兹贝木材；混凝土：新旧两代；金属。