Viscous vibration-absorption auxiliary rope device for cable-stayed bridge
An auxiliary cable and cable-stayed bridge technology, applied in cable-stayed bridges, bridges, bridge parts, etc., can solve the problems of passive control failure, inability to provide enough cables, etc., to achieve energy dissipation, comprehensive vibration reduction effect, and enhanced consumption performance effect
Inactive Publication Date: 2010-03-03
BEIJING UNIV OF TECH
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Problems solved by technology
Thus for longer cables, it is likely that sufficient damping will not be provided to control cable vibrations, rendering passive control ineffective
Method used
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[0023] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0024] Such as figure 1 As shown, this embodiment mainly includes an auxiliary cable 1, a first ferrule 2 connected to the outer sleeve of the cable-stayed main cable, a second ferrule 3 fixed on the first ferrule 2 for the auxiliary cable to pass through, and Viscous damper6. Wherein: the outer sleeve is sleeved on the outside of the cable-stayed main cable, and is anchored to the ends of the cable-stayed main cable at both ends. Auxiliary cables 1 pass through the second hoops 3 and are connected in series between the cable-stayed main cables, one end of which is fixed on the uppermost cable-stayed main cable, and the other end passes through the connecting member 7 and the piston of the viscous damper. The rods are connected, and the fixed end 11 of the viscous damper is anchored to the main girder of the cable-stayed bridge, such as fi...
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The invention relates to a viscous vibration-absorption auxiliary rope device for a cable-stayed bridge and belongs to the technical field of wind resistance as well as vibration resistance and vibration-absorption in bridge engineering. The auxiliary rope device comprises an auxiliary rope, a hoop connected with an external sleeve of a main stay cable, an external hoop of the auxiliary rope, a connecting screw rod and a connecting screw hole piece of the hoop connected with the external sleeve of the main stay cable, a viscous damper with two ends respectively connected with the auxiliary rope and a main beam of the bridge, as well as a connecting component connected with the damper and the auxiliary rope. The auxiliary rope is connected with the main cable of the cable-stayed bridge through the hoop and the screw connecting piece so as to form a new rope net system and improve the power property and air power property of the stay cable. Simultaneously, under the condition that the auxiliary rope generates deformation, the viscous damper carries out vibration absorption energy consumption so as to further decrease the vibration of the bridge, thus being specially suitable to energy consumption vibration absorption. The material is low in cost, the construction is simple and the effect is obvious.
Description
technical field [0001] The invention relates to a viscous vibration damping auxiliary cable device for a cable-stayed bridge, belonging to the technical field of wind resistance, earthquake resistance and shock absorption of bridge engineering. Background technique [0002] A cable-stayed bridge is a structural system composed of towers under pressure, cables under tension and girders under bending. Because the spanning capacity of the cable-stayed bridge is greater than that of the girder bridge, it is widely used in bridge construction and is the most important type of long-span bridge. The cable-stayed bridge is a self-anchored system, which has the characteristics of no need for expensive ground anchors, good overall rigidity and wind resistance, plus its large spanning capacity, cantilever construction, low cost and beautiful appearance. However, as the spans of cable-stayed bridges increase, the stay cables become longer and longer. As the main load-bearing component...
Claims
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Login to View More IPC IPC(8): E01D19/00E01D11/04E04B1/98
Inventor 何浩祥闫维明杨小森周大兴
Owner BEIJING UNIV OF TECH