Reinforcing construction method of solid-web masonry arch bridge

Abstract

The invention relates to the technical field of solid-web masonry arch bridge reinforcement, in particular to a reinforcing construction method of a solid-web masonry arch bridge. The method comprisesthe steps: A, a pouring formwork is erected below the bottom of an original arch ring of an arch bridge, and a reinforcement layer pouring area is formed between the pouring formwork and the bottom of the original arch ring; B, a pouring through hole is formed in the bridge deck of the arch bridge, extends downwards along the bridge deck of the arch bridge, sequentially penetrates through a pavement layer, an arch crown filler and the original arch ring of the arch bridge and communicates with the reinforcing layer pouring area; c, premixed concrete is poured into the reinforcing layer pouring area through the pouring through hole till the reinforcing layer pouring area is filled with the concrete, pouring is stopped, and the concrete forms a reinforcing layer in the reinforcing layer pouring area; and D, after the strength of the reinforcing layer reaches the preset strength, the pouring formwork is dismounted. According to the reinforcing construction method of the solid-web masonryarch bridge, the quality of the reinforcing layer can be improved, the thickness of the reinforcing layer is reduced, and the reinforcing construction process is simplified.

Description

technical field [0001] The invention relates to the technical field of reinforcement of a solid belly masonry arch bridge, in particular to a reinforcement construction method of a solid belly masonry arch bridge. Background technique [0002] Solid belly masonry arch bridge is a common bridge on provincial, county and township roads at this stage. Its span is generally less than 20 meters, and the main arch ring is mostly made of stone or plain concrete. In recent years, with the increase of traffic flow on provincial, county and township roads and the increase of overloaded vehicles and heavy vehicles, the arch rings of some arch bridges have suffered from various degrees of damage, such as longitudinal and transverse cracks, and the joints have fallen off, which reduces the bearing capacity of the bridges; In addition, some solid-web arch bridges with low load levels also need to be reinforced due to the increase in the load level of the bridge. [0003] At present, ther...

AI Technical Summary

Problems solved by technology

A series of practices found that this reinforcement method has three major disadvantages. First, the thickness of the reinforcement layer is large, which not only affects the appearance of the bridge but also seriously affects the flood discharge under the bridge; second, there are too many steel bars, which brings great inconvenience to the construction; Poor pouring quality, frequent pouring of incomplete concrete in areas such as vaults

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