PROCESS FOR THE CONSTRUCTION OF A STRUCTURE UNDER A SUPPORT SLOPE OF A RAILWAY OR A PAVEMENT

摘要

P Process for the construction of a structure under an embankment supporting a railway or a carriageway, characterized in that it consists in previously manufacturing or placing, on at least one side of the excavation, at at least one flat guide slab (1) supporting at least one slab of the frame (13) of the concrete structure, to be placed below the hollow frame (13) inside reservation grooves (5) made in the guide raft (1), at least one traction cable (6), this cable being secured to one end of a fixed anchor point (12) linked to the guide raft (1), while the other end is engaged with at least one jack (21) carried by the raft of the frame (13), so that the tensile force exerted on the cable (6) by the jack (21) results, as a result of the reaction on the anchor point (12), by a pushing effect on the raft of the frame (13), the sliding of the work being facilitated by an annular belt ire (17) containing a bladder (18) deformable under the action of a pressurized fluid, the latter maintaining a mattress of a lubricating agent between the slab (14) and the sole (2). / P