Abstract: The invention concerns a method for reinforcing a metal tubular structure (1) including the following steps: introducing inside the metal tubular structure (1), a plurality of substantially linear elements (4) having a tensile strength higher than a predetermined value; and injecting a curable filling product inside the metal tubular structure, so that the curable filling product contacts an inner surface of the metal tubular structure (1) and coats the substantially linear elements (4) of said plurality of elements.

Abstract: A composite structural reinforcement is realized within the pipe through in situ stratification of at least one band of reinforcement fibers and a resin matrix. The band is arranged according to a helicoidal path along the internal side of the pipe.

Abstract: A composite structural reinforcement is realized within the pipe through in situ stratification of at least one band of reinforcement fibers and a resin matrix. The band is arranged according to a helicoidal path along the internal side of the pipe.

Abstract: The invention therefore proposes an anchorage unit for anchoring at least one prestressing member, capable of being tensioned, onto a structural component to be strengthened or repaired by additional prestressing. The anchorage unit includes means of fixing onto the structural component and means of anchoring the prestressing member located adjacent to a first side of the anchorage unit oriented towards a regular section of the prestressing member. The fixing means are located adjacent to a second side, opposite the first side, of the anchorage unit, which is so provided that it may be put into traction when the prestressing member is tensioned.

Abstract: For greasing the end of a reinforcement (2) surrounded by a sheath (3) and retained in a truncated cone shaped ring of jaws (6) coacting with a truncated cone shaped housing (5) formed in an anchorage plate (4), which housing is closed by a cap (11), a longitudinal rectilinear groove (12) is formed in this housing and in this cap is formed an orifice (13) automatically aligned with the groove at the end of fitting of the cap and the inner volume of the assembly is filled with grease through a rectilinear hollow needle (14) passing successively through said orifice and said groove.