Rigid hinge for a bridge

Abstract

The invention discloses a bridge rigidity reamer, and belongs to the field of bridge construction. The bridge rigidity reamer comprises a fixed end box girder, a sliding end box girder and a small box girder; the fixed end box girder and the sliding end box girder are spaced to form a telescopic seam; and one end of the small box girder is fixed in the fixed end box girder while the other end is sleeved in the sliding-end box girder and can freely move along the axis direction of the sliding-end box girder. The bridge rigidity reamer is simple in structure, small in construction difficulty, small in effect on water environment and low in cost; the temperature-deformation problem of a bridge girder is scientifically and reasonably solved, the displacement of longitudinal opposite lines at two ends of the girder is released, and the girder rotary angle and the shear displacement are restrained; the comfort of traveling is met while the stress requirement is met; the service life is enabled to be long, the safety and reliability in use are ensured, the construction risk is small, the construction safety is guaranteed, the maintenance is convenient, and the maintenance cost is reduced.

Description

Technical field [0001] The invention relates to a device for bridges, in particular to a rigid hinge for connecting bridges. Background technique [0002] In my country, the continuous length of the main girder of the bridge is more than 2680m, and it is a cable-stayed bridge with more than six towers. One of the main difficulties in its structural system is the low overall rigidity of the multi-tower cable-stayed bridge. In order to solve the above-mentioned problems, the main beam adopts a structural system with vertical supports arranged on both sides of the pylon in the longitudinal direction of 46m to improve the structural rigidity, and at the same time, X brackets are installed at each pylon. The second difficulty of the structural system is that the total length of the main girder reaches more than 2680m. The temperature deformation of the main girder has a great influence on the force of the pylon and the foundation. This effect is because the main girder adopts a longit...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a rigid hinge for bridges with simple structure, low construction difficulty, low impact on the water environment, and low cost in view of the above-mentioned problems. Using this rigid hinge can scientifically and rationally solve the problem of the main girder of the bridge. Temperature deformation problem, releasing the longitudinal relative linear displacement at both ends of the main girder, constraining the rotation angle and shear displacement of the main girder, while meeting the stress requirements, it can also ensure driving comfort, long service life, and safe and reliable use

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