Stay-cable sticky shearing type damper with steering mechanism

A steering mechanism and damper technology, applied in cable-stayed bridges, bridge parts, bridge forms, etc., can solve problems such as affecting the entire bridge landscape, affecting the installation of shock absorbers, reducing the installation height of shock absorbers, etc., to avoid conflicts, The effect of maintaining the landscape and ensuring the installation height

Inactive Publication Date: 2009-07-08
GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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Problems solved by technology

The research shows that for the passive control system, the ratio of the distance Xc between the installation position of the shock absorber and the anchorage point of the lower end cable to the cable length L is best kept in the range of 0.03. Small) should not be less than 0.025. Due to the limitations of the above characteristics, when the bridge is equipped with wind barrier f

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  • Stay-cable sticky shearing type damper with steering mechanism
  • Stay-cable sticky shearing type damper with steering mechanism

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Embodiment

[0028] The Hangzhou Bay Cross-sea Bridge is a convenient passage for the national trunk line and the third line to cross the Hangzhou Bay. It spans the wide Hangzhou Bay sea area with a total length of 36km. It is currently the longest cross-sea bridge built in the world. It is designed as a two-way six-lane highway. The design speed is 100km / h. The bridge has two navigation channels in the north and south. The south channel bridge is a type A single-tower double-cable-plane steel box-girder cable-stayed bridge with a main span of 318m, with a navigation clearance of 31m, and a diamond-shaped double bridge with a span of 230+448+230m. Tower double cable plane (space cable) steel box girder cable-stayed bridge with a navigable clearance of 47m. In order to improve the traffic safety of the navigable bridge, the China Communications Highway Planning and Design Institute installed wind barriers outside the railings on both sides of the bridge deck of the north-south channel bridge. T...

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Abstract

The invention discloses a inclined stay cable viscous shearing type damper with a steering mechanism used in bridge building field, which comprises: a damping container filled with macromolecular viscous material, a plugboard and a support; the damping container is disposed on the support; one end of the plugboard is disposed in the macromolecular viscous material in the damping container, and the other end is connected with the stay cable of bridge. The invention is characterized in that: a stay cable steering mechanism capable of changing the inclination angle on the horizontal plane or bridge side surface is disposed between the plugboard and the stay cable. By disposing a steering mechanism capable of transmitting vibration response on the viscous shearing type damper, the invention ensures the installation height of the vibration damper on cable, avoids the conflict of the vibration damper body and air partition, maintains the good look of the whole bridge, and achieves the ideal damping effect.

Description

Technical field [0001] The invention relates to a vibration damping device in the field of bridge construction, in particular to a stay cable viscous shear type damper with a steering mechanism for reducing cable vibration in a cable-stayed bridge. Background technique [0002] Cable-stayed bridges, as a new type of flexible structure with large spanning capabilities, have developed rapidly in the past 15 years. With the increasing of its span, the cable is also growing. Due to the economy of multi-lane long-span bridges, the number of A-type tower schemes has increased, and the use of space cables and parallel cables has also increased. From a perspective, the Misso system has become a trend. In view of the fact that the stay cable is a slender member with light weight, high flexibility and low damping, the various wind-induced vibrations of the stay cable are also increasingly prominent. my country is a country with a coastline of 18,000 kilometers. It is estimated that my coun...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D11/04
Inventor 王中文陈儒发王波肖桂强顾金钧
Owner GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG
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