Abstract: The invention relates to a method for determining the fatigue capital of a cable supporting a civil engineering structure, the method including: a measuring step (S1, S2) during which the normal tensile stress in the cable and the bending stress in the cable are measured in a synchronized manner so as to obtain the compound stress in the cable; a counting step (S3) during which a count of the number of stress cycles, depending on the amplitude of the stress, is carried out from the measured compound stresses; and a step (S4) of assessing the fatigue capital of the cable during which the fatigue capital of the cable is determined by comparing the count, carried out in the counting step, with a pre-set Wohler curve for the cable.

Abstract: A seal for sealing a cable anchor device (4) to a structural element (1, 3), the cable anchor device (4) being arranged to anchor at least one cable (2) to the structural element (1,3) and having a front surface (15) facing an opening (6) of the structural element, through which front surface the at least one cable (2) extends towards the exterior of the structural element, characterized in that the seal comprises a sleeve (12) which extends from a perimeter of a surface of the structural element including the opening (6) of the structural element to a perimeter of a hermetic portion of the anchored cable (2) comprising at least the front surface (15) of the anchor device (4).

Abstract: Method of reinforcing a construction work comprising the successive steps of: applying a first layer on a surface of the construction work, the first layer comprising a curable polymer that, once it is cured, can be thermally activated for adhering to a thermoplastic material; curing said curable polymer; heating at least a surface of the first layer opposite said surface of the construction work, for thermal activation of the cured polymer; and applying a second layer over said surface of the first layer, the second layer comprising a composite including reinforcement fibers and a thermoplastic matrix, whereby the thermoplastic matrix and the thermally activated cured polymer adhere to each other.

Abstract: The invention relates to a method for monitoring the state of a foundation supporting a building (I) and embedded in the ground, consisting of using a plurality of sensors (4, 5) arranged on the building to acquire a set of measurements (mi1, mi2) relating to the foundation and/or to the building according to a predetermined acquisition mode; calculating, from said set of measurements, a set of condition indicators (iJ1,iJ2) characteristic of an embedding rigidity of the foundation; and making a comparison between a set of values derived from the set of calculated condition indicators and a set of thresholds.

Abstract: The invention relates to the galvanic protection of a concrete structure (10) comprising metal reinforcements (12). Holes (15) are previously made in the structure, for receiving sacrificial anodes. Before arranging said sacrificial anodes, decontamination electrodes (16) and an electrolyte are inserted into the holes in order to carry out a decontamination phase wherein the negative terminal of a power supply (18) is electrically connected to the reinforcements of the structure and the positive terminal of the power supply is electrically connected to the decontamination electrodes. Once the power supply has been activated for a certain amount of time in order to attract the chloride ions to the decontamination electrodes and the electrolyte, the electrolyte and the decontamination electrodes are removed from the holes (15) and the sacrificial anodes are sealed therein and then electrically connected to the reinforcements.

Abstract: The structural cable has several stretched tendons (4). It is diverted in a device comprising a body crossed by conduits (10). Each conduit has a wall to guide one of the tendons along a curved path. The wall of the conduit has a tendon support area (11) directed toward the interior of the curve of the path. This support area presents, in the center portion of the conduit and transverse to the curved path, a section in the shape of a circular arc whose radius is appreciably equal to half the external diameter of the tendon. The central portion of the conduit has a cross-section enlarged outside the support area.

Abstract: The invention provides a method for demounting a cable tensioned between a first and second anchorage points on a structure. The method comprises the following steps: slackening the cable so that a running part of the cable is freed from one of said first and second anchorage points; freeing said running part of the cable from the other said first and second anchorage points; supporting said running part of the cable; and removing said running part of the cable away from at least one of said first and second anchorage points.

Abstract: Process for reinforcing a construction structure where, laid on one portion of said structure, is at least one portion of a reinforcement (10) of elongated shape comprising continuous fibers in the longitudinal direction of said reinforcement, which are combined with a polymer matrix, wherein said process comprises a step of removing the polymer matrix in one portion (20) of the reinforcement so as to release the fibers of the reinforcement in order to allow their rearrangement following their release from the polymer matrix. It is thus possible to optimize the binding configuration of the reinforcement with a portion of the structure to be reinforced.

Abstract: The anchoring device for a cable made of plurality of tendons comprises an anchor block having a front side, a rear side and channels extending between the front and rear sides, each tendon of the cable being received in a respective channel with a blocking member. It also comprises a first protective material with which at least some of the channels of the anchor block are filled, a chamber containing portions of the plurality of tendons of the cable, located on at least one of the front and rear sides of the anchor block, and a second protective material, different from the first protective material, with which the chamber is filled.

Abstract: A contribution is made to the assembly of a wind turbine intended to comprise, in a final assembly condition, a tower (2) surmounted by a nacelle (4) cooperating with a rotor (5) receiving a plurality of blades (3a-3c). To this end, a temporary association is made between at least some blades from said plurality of blades and the tower, so that said blades extend substantially in the longitudinal direction of the tower.

Abstract: Method of draining a system for anchoring a structural cable to a construction element, the anchor system comprising a first chamber delimited by an envelope, the first chamber containing a first part of the structural cable and a first filling material, the method comprising: inserting at least one heating element into the first filling material via an opening in the envelope of the first chamber; heating the first filling material with the aid of the heating element to fluidize some or all of the first filling material; and extracting the fluidized first filling material via an opening in the envelope of the first chamber.

Abstract: A method for transporting a civil engineering structure including a mast in an aquatic medium is presented. In an embodiment, the method includes fastening the civil engineering structure to at least one flotation unit, moving the civil engineering structure and the connected flotation unit in the aquatic medium as far as a desired position. The civil engineering structure may be fastened to the flotation unit in a region situated above the center of equilibrium of the civil engineering structure connected to the flotation unit. The connection may be configured to uncouple the rotational movements of the flotation unit and of the civil engineering structure about at least one axis perpendicular to the longitudinal axis of the mast of the civil engineering structure.

Abstract: The invention relates to a method of representing the movements, if any, of a structure (10), the method being performed in an appliance (50) including a camera (52), said structure being provided with at least one movement measurement device (20, 22, 24). The invention comprises: a step of acquiring an image of the structure with the help of the camera; a step of sending a query to a remote server (30); a step of receiving at least some information about the movement measurement device in response to said query, said information including data about at least one measurement obtained with the help of the movement measurement device; and a step of inserting said measurement data in said image.

Abstract: The invention relates to a method for determining the fatigue capital of a cable supporting a civil engineering structure, the method including: a measuring step (S1, S2) during which the normal tensile stress in the cable and the bending stress in the cable are measured in a synchronized manner so as to obtain the compound stress in the cable; a counting step (S3) during which a count of the number of stress cycles, depending on the amplitude of the stress, is carried out from the measured compound stresses; and a step (S4) of assessing the fatigue capital of the cable during which the fatigue capital of the cable is determined by comparing the count, carried out in the counting step, with a pre-set Wohler curve for the cable.

Abstract: To protect the end of a cable composed of a set of tendons individually held in an anchorage system, the device comprises a skirt extending from the front of the anchorage system and placed around the set of tendons, and several sleeves. The tendons have respective end portions which extend beyond the front of the anchorage system and which are individually received in the sleeves, said sleeves being sealed off beyond the end portions of the tendons. A connection between the skirt and the sleeves encloses a chamber delimited by the front of the anchorage system, the skirt, and the sleeves, the connection comprising an active stuffing box kind of system. The volume of this chamber is filled in with a filling product.

Abstract: The invention provides a method for pulling strands or sub-groups of strands of a multi-strand cable into a conduit (3). In accordance with this method, a strand or sub-group of strands (2) to be pulled into the conduit is conveyed from one end of the conduit to the other by the movement of a drive element (1) in tension, to which the strand or sub-group of strands is temporarily coupled. In addition, the drive element in tension is designed not to enter a bundle of previously installed strands.

Abstract: The traction system comprises a plurality of substantially parallel tendons (2) movable for pulling a load, the tendons being disposed according to a pattern in a plane perpendicular to the tendons; and at least one deviator (3) for guiding the tendons, the deviator accommodating an angular deflection of the plurality of tendons. The deviator includes a support structure (4) and a plurality of segments (5) each having an inner surface facing a convex surface of the support structure, front and rear surfaces and a plurality of channels extending from the front surface to the rear surface. The channels are disposed according to said pattern in the front and rear surfaces of each segment, each tendon being received in a respective one of the channels. At least some of the segments (5) have their inner surfaces bearing on the convex surface of the support structure (4) in response to tensile forces applied to the tendons.

Abstract: The anchoring device for a cable made of plurality of tendons comprises an anchor block having a front side, a rear side and channels extending between the front and rear sides, each tendon of the cable being received in a respective channel with a blocking member. It also comprises a first protective material with which at least some of the channels of the anchor block are filled, a chamber containing portions of the plurality of tendons of the cable, located on at least one of the front and rear sides of the anchor block, and a second protective material, different from the first protective material, with which the chamber is filled.

Abstract: The protective fire-resistant coating comprises a plurality of stacked fibrous layers (1, 2) and a layer of refractory glue (4) placed between two of the fibrous layers. The glue comprises active elements which can release water during an increase in temperature. In at least one layer of refractory glue, a vapour-permeable substrate (5) that is impregnated with the refractory glue extends parallel to the fibrous layers.

Abstract: The method is for protecting the end of a cable made of a plurality of parallel tendons (10) anchored using a block (15) having a front side, a rear side and channels (16) extending between the front and rear sides. Each tendon of the cable is held in a respective channel of the anchor block with a blocking member (19). The method comprises performing a first phase of injecting protective material (100) into at least some of the channels of the anchor block. A chamber (30) is formed on at least one side of the anchor block (15) so as to contain portions of the plurality of tendons. A second phase of injecting protective material (200) into the chamber (30) is then performed.