A passive damper for damping relative lateral movement between a tensioned cable or other oblong member and a support structure includes a first fixture element rigidly connected to the cable or other oblong member, a second fixture element rigidly connected to the support structure, and at least one rotational damping device arranged between the first and second fixture elements . The rotational damping device is configured to translate the relative lateral movement into relative rotational moment between at least two arms of the rotational damping device that are connected at a rotational joint with a damping pad clamped in between the at least two arms The rotational joint has a rotational axis (Y) substantially parallel with a longitudinal axis (X) of the cable.

A passive damper for damping relative lateral movement between a tensioned cable or other oblong member and a support structure includes a first fixture element rigidly connected to the cable or other oblong member, a second fixture element rigidly connected to the support structure, and at least one rotational damping device arranged between the first and second fixture elements . The rotational damping device is configured to translate the relative lateral movement into relative rotational moment between at least two arms of the rotational damping device that are connected at a rotational joint with a damping pad clamped in between the at least two arms The rotational joint has a rotational axis (Y) substantially parallel with a longitudinal axis (X) of the cable.

A water damping device includes a steel frame and a water-blocking cup; the device is immersed in the water and connected under the main bridge girder by wire ropes. One end of the water-blocking cup is provided with a blocking ring and a cover. The water-blocking cup cover is mounted between the cup and the blocking ring and is movably connected to the water-blocking cup. The blocking ring is used to prevent the water-blocking cup cover from opening towards the outside of the cup; an array of water-blocking cups is mounted on the steel frame along the downward direction of the water-blocking cup cover.

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.

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.

A tension member protection system includes two or more shell elements arranged circumferentially around a tension member which together surround a cavity that receives the tension member. A plurality of joining sleeves, each of which is associated with one of the two shell elements, is designed and arranged on the shell elements in such a way that, in a cavity forming state, they interlock so that their through-holes in the longitudinal direction of the tension member protection system only overlap completely when the two shell elements lie with their contact surfaces against other. A rod-shaped element is designed to be passed through the through-holes of the interlocking joining sleeves.

A tension member protection system includes two or more shell elements arranged circumferentially around a tension member which together surround a cavity that receives the tension member. A plurality of joining sleeves, each of which is associated with one of the two shell elements, is designed and arranged on the shell elements in such a way that, in a cavity forming state, they interlock so that their through-holes in the longitudinal direction of the tension member protection system only overlap completely when the two shell elements lie with their contact surfaces against other. A rod-shaped element is designed to be passed through the through-holes of the interlocking joining sleeves.

A suspension cable replacement device includes a power unit and a plurality of adjustment units. The plurality of adjustment units is disposed around a suspension cable to be replaced. The power unit is configured to power the plurality of adjustment units. Each adjustment unit includes a support frame, a connector, and a steel strand. The power unit includes two jacks each including a main body. The support frame includes two support columns, a top part, and a bottom part. The top part includes a first through hole, and a nut fixed on an anchor is disposed in the first through hole; a hanger rod is disposed through the anchor and the nut, and fixed in the nut. The bottom part includes a second through hole, and the steel strand is disposed through the second through hole. The connector is disposed in the central cavity of the support frame.

A damping system for a cable disposed within an upper pipe and a lower pipe includes a damper plate assembly connected to the upper pipe, a slider ring connected to and/or supported by the lower pipe, the slider ring having a hole in which the cable is arranged; and a shroud surrounding the damping system at a position where the upper pipe is adjacent to the lower pipe, such that the damper plate assembly and the slider ring are covered by the shroud. In such damping systems, the damper plate assembly and the slider ring are in contact with each other such that the transverse movement of the upper pipe relative to the lower pipe generates a frictional force to reduce an amplitude of the transverse movement of the upper pipe relative to the lower pipe.

A damping system for a cable disposed within an upper pipe and a lower pipe includes a damper plate assembly connected to the upper pipe, a slider ring connected to and/or supported by the lower pipe, the slider ring having a hole in which the cable is arranged; and a shroud surrounding the damping system at a position where the upper pipe is adjacent to the lower pipe, such that the damper plate assembly and the slider ring are covered by the shroud. In such damping systems, the damper plate assembly and the slider ring are in contact with each other such that the transverse movement of the upper pipe relative to the lower pipe generates a frictional force to reduce an amplitude of the transverse movement of the upper pipe relative to the lower pipe.