SOLETANCHE FREYSSINET

The invention relates to a formwork device ( 10 ) for an end of a panel of a molded wall, said formwork device extending along a longitudinal direction (A) and comprising at least one first formwork element ( 20 ) including: a base ( 22 ) extending along the longitudinal direction (A) and having an outer face ( 24 ); a housing ( 28 ) interacting with the base and extending along the longitudinal direction; at least one measuring device ( 40 ) making it possible to determine at least one first deviation parameter (d 1 ) representative of the deviation of the base ( 22 ) with respect to a first vertical plane (P 1 ); and a signal-transmitting device ( 50 ) connected to the measuring device ( 40 ) to transmit the first deviation parameter (α 1 , d 1 , β) to a reception station ( 60 ) located at the surface.

A reinforcement element for a diaphragm wall is described. The reinforcement element includes a reinforcement cage, the reinforcement element further includes a seal-carrier provided with a mounting part for receiving at least one seal, which is elongated, the seal-carrier is fixed to the first end part of the reinforcement cage and extends along the longitudinal direction of the reinforcement cage, the seal-carrier defines a housing for receiving the seal, at least a first part of which is surrounded by a sacrificial material. Additionally, a method for making a diaphragm wall in the ground is described that comprises placing the reinforcement element in a first trench, pouring concrete into the first trench, and discharging the sacrificial material out of the housing using a scraping tool.

A method for measuring mechanical (undrained shear strength, residual shear strength, remolded shear strength, sensitivity, brittleness) and rheological (viscosity, yield stress, thixotropic) properties of soil, the method comprising: providing a measuring apparatus comprising a rotatable vane blade; inserting the vane blade into the soil at a first depth; during a first period of time, accelerating the rotational speed of the vane blade; during a second period of time, decelerating the vane blade while measuring the torque applied to the vane blade and the rotational speed of the vane blade; determining a relationship between the torque and the rotational speed; and determining rheological properties of the soil at the first depth based on the relationship between the torque and the rotational speed.

The method for manufacturing an individually sheathed strand comprises: conveying a group of metal wires through a die; upstream of the die, applying a first filler product to at least a first portion of the strand; upstream of the die, applying a second filler product to at least a second portion of the strand distinct from the first portion; and extruding a plastic around the group of metal wires passing through the die, so as to envelop the group of metal wires covered with the first and second filler products in a continuous sheath formed of the extruded plastic. The second filler product has greater adhesion to the group of metal wires than the first filler product.

Telescopic device of a remote-operation arm, comprising an outer tube that is fixed relative to a mounting joint that forms the shoulder of the arm and defines a proximal end of the telescopic device, an intermediate tube and an inner tube provided at a distal end of the telescopic device with a tool-manipulator device, the intermediate tube sliding in the outer tube and the inner tube sliding in the intermediate tube, the telescopic device comprising a first electric motor secured to one end of the intermediate tube at the end corresponding to the proximal end, said motor being coupled to a drive pinion of a chain conveyor extending through the inner tube towards the distal end, said chain conveyor comprising an outbound portion and a return portion between said drive pinion and a follower pinion at the end corresponding to the distal end, said outbound portion travelling towards said distal end and the return portion travelling towards said proximal end as the telescopic device extends, and wherein the inner tube is secured via a first rod to the outbound portion near said motor while the outer tube is secured to the return portion at the end corresponding to the follower pinion via a second rod extending along the chain conveyor so that when the telescopic device is retracted, rotation of the first electric motor in the direction for extending the telescopic device pushes the outer tube and the inner tube in two opposite directions with respect to the central tube causing the telescopic device to extend, and so that, when the telescopic device has been extended, rotation of the first electric motor in a direction for retracting the telescopic device pulls the outer tube and the inner tube towards one another.

Firewall device for caulking an aperture defined in a separating element and traversed by through elements, notably consisting of cables, pipes or the like, this device being in the form of a casing of rectangular, circular or oval cross section, provided with a first aperture on a first face on which said through elements enter the casing, referred to as the front face of the casing, and a second aperture on a second face, referred to as the rear face of the casing, opposite the first face and forming an exit aperture for said through elements, such that the casing includes flaps constituting a frame for the first aperture of the casing, said device includes sheets of intumescent material covering a first part of the inner face of the casing on the rear face side of the casing, and blocks of caulking foam on the casing front face side covering a second part of the casing inner face, said foam blocks filling a first space between the casing wall(s) and said through elements, and said flaps forming retaining flanges for said foam blocks.

A protective shield includes two protective elements extending in parallel with the tensioning member and a system for assembling the protective elements around an axial passage for the tensioning member. Each protective element has a first shell adjacent to the axial passage, a second shell, and a filling in a radial gap between the first and second shells. The protective elements have between them two interface zones, diametrically opposed with respect to the axial passage. The assembly system of the protective elements is configured to apply a force that presses the protective elements against each other in the two interface zones.

A method for fabricating a retaining wall configured to extend into a ground comprising the steps of providing at least a first longitudinal support having a receiving part and extending along a first longitudinal direction; placing the first longitudinal support transversely to the ground; providing at least a first module comprising a longitudinal element and a first wing; positioning the first module parallel to the first longitudinal support; connecting the first module to the first longitudinal support, so that the first wing of the first module is slidably engaged with the receiving part of the first longitudinal support; then moving said first module in translation along the first longitudinal direction, and sinking said first module into the ground and then the first longitudinal support into the ground.

A penetration testing module includes a casing having an opening and a thermal insulator housed in the casing. A metallic rod is arranged in the opening and thermally insulated from the casing by the thermal insulator. A heater is configured to heat the metallic rod, and a thermal sensor is configured to measure the temperature of the rod.

A deicing device for a sheath of a structural cable, the structural cable comprising tendons housed in the sheath, the deicing device includes a base; a bearing element; and a power system configured to press the bearing element against the tendons while the base is in contact with an inner surface of the sheath, and to generate vibrations between the bearing element and the base.