A structural cable of a construction work. The structural cable including a bundle of load-bearing tendons, a sheath within which the bundle of tendons is located, a housing located within the sheath and fixed relative to the sheath, said housing defining a cavity, the bundle of tendons being at a distance from the housing and the cavity, the bundle of tendons being located outside the housing and the cavity, said cavity extending longitudinally relative to the sheath.

Provided is a wire rope with resin wire, including a wire rope body in which a plurality of strands are twisted together, and at least one resin wire spirally wound around the wire rope body along a recess between the strands. Strand grooves into which the strands can fit and a resin wire groove into which the resin wire can fit are formed spirally along the twist of the wire rope with resin wire, in a winding hole of a resin wire winding die used for winding the resin wire around the wire rope body. As a result, the resin wire can be easily and reliably mounted on the wire rope body and a wire rope with resin wire can be thus produced.

The present invention relates to a hybrid pipe (1) for stay cable, comprising a tubular shaped wall (15), the wall having an internal face (18) and an external face (19). The hybrid pipe (1) further comprises at least one reinforcing element (12, 22), the reinforcing element (12, 22) being provided at the wall (15) to form the hybrid pipe (1) such that the hybrid pipe (1) has a higher mechanical properties/resistance such as higher buckling resistance, higher tensile strength and/or a lower thermal dilatation than the wall (15) itself. The present invention also relates to a cable-stayed system comprising such a hybrid pipe (1) and a method of manufacturing such a hybrid pipe (1).

The structural cable of a construction work comprises a bundle of load-bearing tendons, a sheath within which the bundle of tendons is located, and at least one vibration module received within the sheath and configured to generate vibrations to break superficial ice or frost deposits on the cable.

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.

The sheath (20) for a structural cable (10) has an outer surface to be exposed to an environment of a construction work equipped with the structural cable (10). The outer surface of the sheath has a roughness texture (30) to promote retention of frozen water. In at least an upper part of the length of the sheath (20), the roughness texture (30) covers more than half of the outer surface of the sheath.

Provided is a wire rope with resin wire, including a wire rope body in which a plurality of strands are twisted together, and at least one resin wire spirally wound around the wire rope body along a recess between the strands. Strand grooves into which the strands can fit and a resin wire groove into which the resin wire can fit are formed spirally along the twist of the wire rope with resin wire, in a winding hole of a resin wire winding die used for winding the resin wire around the wire rope body. As a result, the resin wire can be easily and reliably mounted on the wire rope body and a wire rope with resin wire can be thus produced.

A snow and ice melt system having one or more zones, each including one or more heaters, and having one or more controllers configured to use a power output of each heater and an average temperature of each zone to determine operational control of each heater to achieve a specified result. Hydronic or resistive heaters could be used. The controllers may be configured to use a system temperature response over time to determine if a phase change of the snow or ice is occurring. The phase change might indicate that snow or ice is present on a zone and is melting. Use of a first derivative of the system temperature response over time might determine a percentage of a zone covered by snow or ice. Use of a second derivative of the system temperature response over time might determine whether melting is complete.

The structural cable of a construction work comprises a bundle of load-bearing tendons, a sheath within which the bundle of tendons is located, and at least one vibration module received within the sheath and configured to generate vibrations to break superficial ice or frost deposits on the cable.

A sheath of a structural cable of a construction work, the structural cable being destined to comprise a bundle of tendons (20) destined to bear a load of the structural cable and to be received within said sheath, the sheath having an outer surface (30) and the sheath being made of a single layer of material (32) over at least a part of the length of the sheath.

The sheath comprises heating components (34) arranged within said single layer (32), the heating components (34) being configured for receiving electrical energy and, using said electrical energy, heating at least the outer surface (30) of the sheath so as to prevent ice, snow, rime or frost from forming thereon or remove ice, snow, rime or frost from the outer surface (30) of the sheath.