Reinforcing method of hollow plate girder bridge

Abstract

The invention relates to a reinforcing method of a hollow plate girder bridge. The reinforcing method comprises the following steps that an original pavement layer on a hollow plate and original concrete in a hinge joint are dismantled; a hinge joint bottom die and hinge joint reinforcing ribs are installed, one part of each hinge joint reinforcing rib is located in the hinge joint, the other partof each hinge joint reinforcing rib is located above the hinge joint, and concrete is poured into the hinge joints to form hinge joint concrete; a first connecting piece is arranged between every twoadjacent hollow plates, and the two ends of the first connecting piece are implanted into the two corresponding adjacent hollow plates respectively; a reinforcing mesh is arranged on the hollow plate, and the reinforcing mesh is bound with the first connecting piece; the concrete is poured on the hollow plates to cover portions, located above the hinge joints, of the reinforcing mesh, the first connecting piece and the hinge joint reinforcing ribs, and a concrete pavement layer is formed; and an asphalt pavement layer is paved on the concrete pavement layer. Reinforcing quality can be guaranteed, maintenance difficulty and cost are reduced, and meanwhile problems that a structural appearance is affected by reinforcing the hinge joints through a bonding steel plate, and the steel plate needs to be maintained in a later period are solved.

Description

technical field [0001] The present application relates to the technical field of bridge reinforcement, in particular to a method for reinforcing hollow slab girder bridges. Background technique [0002] Prefabricated hollow slab girders are widely used in small and medium-span bridges in my country due to their light weight, convenient hoisting and fast construction. The hollow slabs of the hollow slab bridges built in the 1980s and 1990s mostly used the connection form of small tongue and groove joints. The transverse connection between the slabs was weak, the overall transverse stiffness of the structure was poor, and the stress on each hollow slab was uneven. In the past, the traffic demand was met when the traffic volume was not large and the vehicle load was small. However, with the acceleration of economic construction and the increase of modern traffic volume, a large number of hollow slab girder bridges have various degrees of damage, such as: longitudinal cracks at...

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Problems solved by technology

[0006] The embodiment of the present application provides a reinforcement method for hollow slab girder bridges to solve the problem that in the related art, it is difficult to guarantee the quality of the hinge joints reinforced with epoxy resin glue, and the appearance of the structure is affected by the reinforcement of the hinge joints with steel plates, and the steel plates need to be maintained in the later stage. The overall reinforcement effect of the board is limited, which will increase the difficulty and cost of maintenance and repair

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