Structure and method for reinforcing transverse linkage of highway hollow slab bridge

Abstract

The invention relates to a structure and method for reinforcing transverse linkage of a highway hollow slab bridge, which comprises a plurality of construction units; each construction unit comprises a hollow plate provided with perforated profile steel; a corrugated pipe penetrates through the profile steel opening; a steel strand penetrates through the corrugated pipe; the steel strand is anchored on the anchorage device; a reinforced concrete pavement layer, a waterproof layer and a bridge deck asphalt pavement layer are sequentially paved on the hollow slab from bottom to top; the multiple construction units are transversely spliced, and guardrails are arranged on the sides of the hollow plates at the two ends of the construction units. An anchorage device and an anchoring device stiffening steel plate are arranged in the guardrail. The invention has the beneficial effects that the transverse connection of the hollow slabs is enhanced by applying transverse prestress to the bridge floor, so that the beam slabs can be better cooperatively stressed, and the problem that the transverse connection is further weakened due to falling of hinge joints of the hollow slabs is solved; the construction is simple, the operation is easy, and few steps are added; the change is performed inside the bridge, so that the attractiveness of the bridge is not influenced; and the later bridge operation and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular, it provides a structure and a method for strengthening lateral connection of highway hollow slab bridges. Background technique [0002] Hollow slab bridge is a common small-span bridge. Its structure is simple and its construction is convenient. It is widely used in the general terrain of highway bridges, but there are the following problems. Only relying on the connection between the bridge deck and the hinge joints, the overall horizontal connection is weak, and usually the lateral distribution coefficient is relatively large, and it is found through inspection that the hinge joints often fall off in hollow slab bridges; Each board makes the supporting veneer easy to damage, resulting in long longitudinal cracks or even vertical through cracks, and the falling off of the hinge joints also leads to cracks at the corresponding positions of the bridge deck pavement, which...

AI Technical Summary

Problems solved by technology

[0002] Hollow slab bridge is a common small-span bridge. Its structure is simple and its construction is convenient. It is widely used in the general terrain of highway bridges, but there are the following problems. Only relying on the connection between the bridge deck and the hinge joints, the overall horizontal connection is weak, and usually the lateral distribution coefficient is relatively large, and it is found through inspection that the hinge joints often fall off in hollow slab bridges; Each board makes the supporting veneer easy to damage, resulting in long longitudinal cracks or even vertical through cracks, and the falling off of the hinge joints also leads to cracks at the corresponding positions of the bridge deck pavement, which in turn leads to water damage in the bridge deck system. Infiltrate into the hollow slab, corrode the beam body, cause damage to the bridge, and pose a greater safety hazard

Due to the narrow space at the hinge joint, it also brings inconvenience to later maintenance.

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