Stay cable damping device
A shock-absorbing device and cable-stayed technology, which is applied to bridge parts, bridges, buildings, etc., can solve the problems of cable-stayed cables that consume huge manpower and material resources, poor installation self-adaptation, and damping fluid leakage, etc., and achieve simple and reliable structure, automatic Strong adaptability and simple maintenance effect
Active Publication Date: 2014-01-22
WUXI FUYO TECH
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Problems solved by technology
All kinds of problems caused by the vibration of the cable-stayed cables generally cost a lot of manpower and material resources to carry out the cable-changing project of the cable-stayed bridge
However, this type of damper should be installed at an angle of 90 degrees to the cable. When the inclination angle between the cable and the bridge deck is ≤45 degrees, the installation of the external damper on the bridge cable is difficult, and it is easy to cause leakage of damping fluid, resulting in damping device failure
At the same time, the existing external dampers for bridge cables can only suppress the in-plane vibration, but cannot control the out-of-plane vibration of the cables.
Due to the adjustment of the cable force during installation, the installation self-adaptation is poor
Method used
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[0013] The specific embodiments of the present invention will be further described below in conjunction with the drawings.
[0014] Figure 1~3 It includes the cable clamp 1, the transmission rod 2, the first-level rod 2-1, the second-level rod 2-2, the sliding plate 2-3, the triangular transmission lever 3, the transverse transmission device 4, the bracket body 4-1, and the One support 4-2, second support 4-3, bridge cable external damper 5, support frame 6, arc gap 7, etc.
[0015] Such as Figure 1~3 As shown, the present invention is a stay-cable stay-cable damping device, which includes a support frame 6, and the upper surface of the support frame 6 is fixedly provided with a transverse axis-wound transmission device 4 and a bridge cable external damper 5, wherein The transverse shaft transmission device 4 includes a support body 4-1, a first support 4-2 fixed on the top of the support body 4-1, and a second support 4-3 connected to the first support 4-2. A third support 5-...
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The invention belongs to the technical field of bridge engineering structure damping, and particularly relates to a stay cable damping device. The stay cable damping device comprises a support. A transverse around-shaft transmission device and an externally-placed damper of a bridge cable are arranged on the upper surface of the support, wherein the transverse around-shaft transmission device comprises a support body, a first support base fixed to the top of the support body and a second support base connected to the first support base. A third support base is fixed to the top of a box body of the externally-placed damper of the bridge cable. Two angle points at the bottom of a triangular transmission lever are connected to the second support base and the third support base respectively, the other angle point of the top portion of the triangular transmission lever is connected with a transmission rod, and the other end of the transmission rod is fixedly connected with a cable clamp. According to the adjustable transmission rod, position adjustment in the process of installation is provided, the self-adaptation capacity is strong, installation is convenient, and the stay cable damping device is simple and reliable in structure, easy to maintain and long in service life.
Description
Technical field [0001] The invention belongs to the technical field of bridge engineering structure damping, in particular to a stay cable damping device. Background technique [0002] The main load-bearing member of the cable-stayed bridge is the stayed cable. The cable is characterized by large slenderness ratio, small mass, large flexibility, and small damping. Its logarithmic attenuation rate is generally below 0.01. The cable is prone to various vibrations under external excitation, fatigue damage the cable, and even the bridge structure. The vibration of the cable-stayed bridge will not only cause fatigue damage to the cable and anchor, but also damage the sheath and cable casing, accelerate the corrosion rate of the cable, and cause psychological anxiety. The various problems caused by the vibration of stay cables generally consume huge manpower and material resources to carry out the cable replacement project of the stayed bridge. Therefore, the vibration reduction of ...
Claims
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IPC IPC(8): E01D19/04
Inventor 王惠强王豫顾钦钦
Owner WUXI FUYO TECH