Efficient steel strand wire stay cable saddle

Abstract

The invention discloses an efficient steel strand wire stay cable saddle and belongs to the technical field of bridge structures. The stay cable saddle comprises steel strand wires, anchor bearing plates, a sleeve, wire dividing tubes, a filling material and soft metal, wherein the number of the wire dividing tubes is the same as the number of the steel strand wires in the stay cable; the steel strand wires independently pass through the corresponding wire dividing tubes; the periphery of each wire dividing tube is circular; an upper part and a lower part of the inner wall of each wire dividing tube are shaped as arcs with different diameters; the upper part is large, the lower part is small, and a middle part is a special-shaped structure with a diagonal plane; the peripheries of the steel strand wires are coated with a circle of soft metal; the contact area is increased. According to the efficient steel strand wire stay cable saddle, single steel strand wire in the stay cable can be replaced; through a soft metal layer, the stress area of the steel strand wires is increased; meanwhile, the slippage resistance is improved; the slippage of the steel strand wires caused by unbalanced force on two sides of a bridge tower in the operation process of the stay cable can be avoided; the safety of the structure is improved; the efficient steel strand wire stay cable saddle has broad application prospects.

Description

technical field [0001] The invention relates to a high-efficiency steel strand cable-stayed saddle, which belongs to the technical field of bridge structures. Background technique [0002] The continuous increase of traffic flow has put forward new requirements for the steel strand cables of cable-stayed bridges. The first is the safety of the cable stays during operation, that is, the steel strands in the cable stays cannot be in the saddle Sliding occurs; secondly, the convenience of the stay cable during maintenance, that is, the individual steel strands in the stay cable can be replaced individually without interrupting the traffic. [0003] For cable-stayed bridge cables using steel strands, due to tensioning and other technical reasons, during the service of the bridge, one or several steel strands in some cables will often be damaged prematurely, which means Replacement is required. Replacement of the whole bundle will have the problems of affecting normal traffic a...

AI Technical Summary

Problems solved by technology

The replacement of the whole bundle will have the problems of affecting normal traffic and high maintenance costs, and is not conducive to the continued use of undamaged steel strands, resulting in a waste of effective resources

In addition, during the operation of the cable stay, when the loads on both sides of the cable tower are not equal, the cable force of the cable stay on both sides of the cable saddle is unbalanced, and the steel strands in the cable are unbalanced on both sides. Under the condition of slipping in the cable saddle, the cross-section and the wire splitting tube are in point contact, which will cause great wear and tear

After the anti-corrosion film on the surface of the steel wire is destroyed, fatigue damage is more likely to occur in a high-stress state, which is likely to affect the safety of bridges and traffic

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