Assembled cable saddle structure for suspension bridge

Abstract

The invention discloses an assembled cable saddle structure for a suspension bridge, which is composed of an upper part and a lower part, wherein the upper part is assembled into a saddle groove of a main cable saddle or a vice cable saddle by connecting and welding steel plates in various specifications through high-strength bolts, and the lower part is assembled into a bearing bracket of the main cable saddle or the vice cable saddle by welding the steel plates; the upper part is connected with the lower part through high-strength bolts or welded seams; and the bearing bracket can be in running fit, sliding fit or stationary fit with a base. Compared with the traditional casting or cast-weld combined saddle, the assembled cable saddle structure disclosed by the invention has the advantages of simpler processing, more convenient transportation, more flexible assembly and more reliable quality, can serve as the saddle of the suspension bridge, and is especially suitable for a large-span suspension bridge in a mountainous area with difficult transportation conditions.

Description

technical field [0001] The invention belongs to the technical field of cable saddle structures for suspension bridges, and in particular relates to an assembled cable saddle structure for suspension bridges. Background technique [0002] Suspension bridges use main cables and slings as the suspension system of stiffened beams to transfer loads to bridge towers and anchorage bridges. The main load-bearing structure of the bridge is composed of bridge towers and high-strength flexible cables suspended on the bridge towers. It is composed of sling, stiffening beam and anchor structure. The loads on the spans are carried by the stiffening beams and transferred to the cables by the hangers. The main cables are the main load-bearing structure, but they are only in tension. The cable itself is a geometrically variable body, but it can form a balanced force-bearing structural system with a certain geometric shape in space through the combination of bridge towers, anchorage structu...

AI Technical Summary

Problems solved by technology

The full-cast cable saddle is a casting that casts the saddle groove and the lower seat body as a whole. After heat treatment and machining, the manufacturing process is relatively simple, but the weight is relatively large, and it is difficult to control the later machining, and the casting is easy. Various casting defects

The fully welded cable saddle is welded by various steel plates, its weight is relatively small, and the amount of steel used is less, but the welding process is too complicated. Currently, only a few bridges use this type of saddle

The cast-welded cable saddle means that the saddle groove part is made of casting, and the lower seat is made of thick steel plate, which is connected into a whole by welding after being aligned with each other. It has the advantages of both full-cast and fully-welded saddles However, it needs to be welded and assembled in the factory. The volume and weight of a single block are still relatively large, and there are great difficulties in transportation and hoisting, especially in mountainous environments with poor transportation conditions.

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