Shell cross-member system and railway section including such a system

A shell cross-member system for a railroad track, configured to be fixed in an apron of the railroad track, the shell cross-member system comprising:

• a cross-member having a lower face and an upper face, the upper face receiving a rail fastening system;
• and
• a shell that substantially entirely envelops the cross-member to define an inner volume for receiving the cross-member, the inner volume being sealed against outside attacks, the shell comprising
• a lower half-shell that is a liner, receiving the cross-member, the liner including a bottom and a raised peripheral wall bordering the bottom, and
• an upper half-shell that is a cover, receiving the cross-member, the cover including a ceiling and a fallen peripheral wall,
• a rim of the raised peripheral wall of the liner and a rim of the fallen peripheral wall of the cover cooperating to sealably close the shell,
• the rim of the peripheral wall of the liner including
• a first planar portion angled outwardly,
• a first substantially horizontal edge, and
• a first downward end,
• the rim of the peripheral wall of the cover including
• a second portion having an outer face, configured to be pressed against the first planar portion of the rim of the liner and angled identically to the first planar portion, the outer face being provided with a slot that is open toward the first planar portion and that receives a sealing gasket,
• a second substantially horizontal edge, and
• a second downward end.