Abstract: A stand for hosting a Multiple Stud Tensioning Machine (MSTM) for tensioning working studs, the stand comprising a first assembly designed to lie on a floor, and a second assembly designed to receive the MSTM and movable in translation with respect to the first assembly thanks to a translation system.

Abstract: A stand for hosting a Multiple Stud Tensioning Machine (MSTM) for tensioning working studs, the stand comprising a first assembly designed to lie on a floor, and a second assembly designed to receive the MSTM and movable in translation with respect to the first assembly thanks to a translation system.

Abstract: Device for tensioning a threaded rod comprising an actuator able to exert an axial tensile force on the threaded rod with respect to a structure to be tensioned, the said tension device comprising a cylinder, a piston, a tubular skirt in contact with the cylinder and a surface of the said structure to be tensioned, and a tie for transmitting the axial tensile force of the actuator towards an end of the threaded rod. The tie and the tubular skirt each comprise at least two semicylindrical parts each having two substantially planar axial surfaces, the two axial surfaces of one semicylindrical part being joined radially respectively with one of the two axial surfaces of the other semicylindrical part, so as to form a part of revolution.

Abstract: A multiple stud tensioner machine adapted to exert a longitudinal pre-stressing traction on a plurality of studs (2), the stud tensioner machine comprising a sensor supporting assembly (6) adapted to receive a plurality of elongation sensors (11) arranged in a row and positioning means adapted to move one (11a) of said sensors from said row into an operating engagement with one (2a) of said studs.

Abstract: A device is for tensioning a rod having a threaded portion and includes an actuator adapted to provide a tensioning axial force and a tie-rod adapted to transmit the axial force from the actuator to the threaded portion of the rod. The tie-rod includes a plurality of jaws, the jaws being movable radially between a closed position at which the jaws are engaged with the rod threaded portion and an open position at which the jaws are disengaged from the threaded portion, each jaw having an outer surface. A locking element includes a sleeve slidable axially along the tie-rod and disposable about the jaws, the sleeve having an inner frustoconical surface contactable with the outer surfaces of the jaws.

Abstract: Device for tensioning a threaded rod comprising an actuator able to exert an axial tensile force on the threaded rod with respect to a structure to be tensioned, the said tension device comprising a cylinder, a piston, a tubular skirt in contact with the cylinder and a surface of the said structure to be tensioned, and a tie for transmitting the axial tensile force of the actuator towards an end of the threaded rod. The tie and the tubular skirt each comprise at least two semicylindrical parts each having two substantially planar axial surfaces, the two axial surfaces of one semicylindrical part being joined radially respectively with one of the two axial surfaces of the other semicylindrical part, so as to form a part of revolution.

Abstract: A multiple stud tensioner machine adapted to exert a longitudinal pre-stressing traction on a plurality of studs (2), the stud tensioner machine comprising a sensor supporting assembly (6) adapted to receive a plurality of elongation sensors (11) arranged in a row and positioning means adapted to move one (11a) of said sensors from said row into an operating engagement with one (2a) of said studs.

Abstract: A device is for tensioning a rod having a threaded portion and includes an actuator adapted to provide a tensioning axial force and a tie-rod adapted to transmit the axial force from the actuator to the threaded portion of the rod. The tie-rod includes a plurality of jaws, the jaws being movable radially between a closed position at which the jaws are engaged with the rod threaded portion and an open position at which the jaws are disengaged from the threaded portion, each jaw having an outer surface. A locking element includes a sleeve slidable axially along the tie-rod and disposable about the jaws, the sleeve having an inner frustoconical surface contactable with the outer surfaces of the jaws.