Spherical joint for large tonnage swivel construction

Abstract

The invention provides a large-tonnage spherical hinge for rotating construction. Reinforcing ring plates and reinforcing rib plates are arranged at the bottom of a lower spherical hinge body and the bottom of an upper spherical hinge body. Transitional connecting pieces are arranged at the connecting positions of the reinforcing ring plates and the reinforcing rib plates and provided with clamping grooves with the thickness matched with that of the reinforcing ring plates or the reinforcing rib plates. The bottoms of the transitional connecting pieces are fixed to the reinforcing ring plates or the reinforcing rib plates. The clamping grooves of the transitional connecting pieces clamp the end faces, matched with the clamping grooves, of the reinforcing ring plates or the reinforcing rib plates, and it is guaranteed that gaps are formed between the end faces of the reinforcing ring plates or the reinforcing rib plates and the groove bottoms of the clamping grooves. The large-tonnage spherical hinge has the beneficial effects that the reinforcing ring plates and the reinforcing rib plates are connected in a clearance fit manner, when the spherical hinge bodies deform, the transitional connecting pieces can still fix and limit the reinforcing ring plates or the reinforcing rib plates, the strength of the reinforcing ring plates or the reinforcing rib plates is guaranteed, welding stress concentration is reduced, and the large-tonnage spherical hinge is partially reinforced; and meanwhile, due to the fact that exhaust ports are formed, internal air can be exhausted through the exhaust ports through injected concrete, and the construction quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of bridge swivel construction, in particular to a spherical joint for large-tonnage swivel construction. Background technique [0002] At present, in the field of swivel construction of large bridges, especially extra-large bridges, the following problems exist in the swivel spherical hinge structure adopted: [0003] 1. Since the reinforcement ring plate and the reinforcement rib plate of the upper and lower ball hinges are directly welded and connected as a fixed structure, when the load is large, the upper and lower ball hinges will be deformed. Once the deformation is greater than the reinforcement ring plate and the reinforcement rib plate If the amount of stretching is too high, the reinforced ring plate or the reinforced rib plate will be damaged such as fracture, which makes it difficult to guarantee the construction quality of the spherical joint; [0004] 2. During construction, since the concrete...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the reinforcement ring plate and the reinforcement rib plate of the upper and lower ball hinges are directly welded and connected as a fixed structure, when the load is large, the upper and lower ball hinges will be deformed. Once the deformation is greater than the reinforcement ring plate and the reinforcement rib plate If the amount of stretching is too high, the reinforced ring plate or the reinforced rib plate will be damaged such as fracture, which makes it difficult to guarantee the construction quality of the spherical joint;

[0004] 2. During construction, since the concrete is gradually grouted, and the adjacent reinforcing ring plates and reinforcing ribs form a separate space, after pouring concrete, a closed space is formed, and the gas inside cannot be discharged outward, resulting in difficult construction quality. ensure

[0005] 3. When welding the reinforcement ring plate and the reinforcement rib plate, since the reinforcement ring plate and the reinforcement rib plate are all welded and connected, the stress of the reinforcement ring plate or the reinforcement rib plate is relatively concentrated during welding, which is prone to damage

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