Reinforcing structure at steel box girder bridge pier and construction method of steel box girder with this structure

Abstract

The invention relates to a reinforcing structure at a bridge pier of a steel box girder and a construction method thereof. The double-synthesis reinforcing structure at the bridge pier of the steel box girder comprises high-strength concrete poured on a lower flange at the bridge pier of the steel box girder and a plurality of punching reinforcing clamps configured in a radial manner, embedded in the high-strength concrete, and used for restraining punching cracks occurring at the bridge pier of the steel box girder. According to the structure and the construction method with the structure, the high-strength concrete can be synthesized on the lower flange at the bridge pier of the steel box girder, the plurality of punching reinforcing clamps formed by fine steel plates, a plurality of steel bars, and convex heads are configured and embedded in the high-strength concrete in a radial manner, the compression strength can be economically increased through the high-strength concrete, and the punching cracks are restrained through the punching reinforcing clamps so that the lifetime is substantially prolonged.

Description

technical field [0001] The invention relates to a reinforced structure at the bridge pier of a steel box girder and a construction method of the steel box girder with the structure, in particular to a double composite reinforcement structure and a construction method of the steel box girder with the structure. Background technique [0002] Such as Figure 9a and Figure 9b As shown, the traditional technology pours concrete on the lower flange of the negative moment zone as a double composite reinforcement structure of the steel box girder, and the poured concrete resists compression to increase the efficiency of the steel box girder while saving the use of high-priced steel. At this time, the concrete poured on the lower flange of the negative bending moment section shall be poured with a constant section in the entire pouring section, or poured with a thicker variable section at some piers. However, when the above-mentioned traditional technology is used for more than 30-...

AI Technical Summary

Problems solved by technology

Since the high-tensile bolts and nuts between the unit sections of the steel box girder will be buried in the poured concrete of the lower flange, the looseness of the high-tensile bolts and nuts cannot be checked during use, so maintenance management difficulties

In the case of steel box girders, a large negative bending moment will act on the bridge pier. To cope with this effect, there is a problem of increasing the cost of the entire steel box girder when manufacturing the steel box girder.

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