STAY CABLE Russian patent published in 2017 - IPC E01D19/16 E01D11/00 

FIELD: construction.

SUBSTANCE: invention relates to the field of bridge construction, namely to devices for protection of stay cable anchors of bridges from vibration. Byte bridge comprises pylon 1, road cover 2, stay cables 3. Stay cable 3 of bridge includes arranged in protective case 4 bundled bars 5, nodes of connection 6, 7 of bundled bars respectively, with pylon 1 and road cover 2, deviators 8, 9 located near nodes of connection each of which contains fixed on bundled bars clip 10, and located in the plane perpendicular to the longitudinal axis 11 of bundled bars, and sealed with forming clamp 10 of thrust 12 and 13, and also damping device 14, consisting of movable 15 and stationary 16 elements, between which there is an elastic vibration-absorbing plate 17. Thrusts 12, 13 by means of hinges 18, 19 are connected with moving 15 element of damping device of the corresponding deviator at an angle of α to longitudinal axis 20 of moving element. Device has a hardness regulator, regulating the pressure between a movable and stationary elements of vibration to the antivibration elastic plate 17, which is made in form of regulating bolts 21. Anchor nodes of the connection of the bundled bars, respectively, with the pylon and road cover consists of base plate 22, anchor holder 23, in which there are wedge clamps 24. Before and during the operation of the stay cable bridge, each of the stay cable deviators are set up by means of hardness regulator on the optimum frequency of vibration dampening of the bundled bars. At vibration of bundled bars vibration through forming clamp is transmitted to thrusts 12, 13 and then by means of hinges 18, 19 to moving 15 element. Since thrusts 12, 13 by means of hinges 18, 19 are connected at an angle of α to longitudinal axis 20 of movable 15 element, forces occurring at hinges and directed perpendicular to the longitudinal axis 20 of the movable 15 element are oriented in opposite directions and can be dampened. In view of the fact that forces acting in the plane perpendicular to the longitudinal axis of the bundled bars are not transmitted to the wedge clamps of anchor node, the reliability of their work increases.

EFFECT: this technical solution will facilitate the installation, maintenance and adjustment of a damping device for the effective damping of stay cable oscillations, and to increase the operational reliability, maintainability and durability of stay cable.

4 cl, 5 dwg