Reinforcing structure and method for assembled continuous box girders

Abstract

The invention specifically relates to a reinforcing structure and method for assembled continuous box girders and solves the problem that the existing reinforcing of the assembled continuous box girders is high in disturbance degree to the original girders, low in construction efficiency and poor in overall rigidity. The reinforcing structure comprises two upper chords and a channel-steel-shaped lower chord and is characterized in that the channel-steel-shaped lower chord is provided with a plurality of anchor bolt holes, anchor bolts are arranged in the anchor bolt holes, web members are arranged between the outer sides of the two upper chords and the front and rear sides of the lower chord, a lacing bar is arranged between the middles of each pair of front-rear-corresponding web members,node plates are arranged between the lower ends of the web members and the front and rear walls of the lower chord, and lower reinforcing ribs are arranged in the channel-steel-shaped lower chord. The reinforcing structure has the advantages that the maximum vertical displacement of the upper box girders is reduced to a certain extent, overall section rigidity is increased to a certain extent, uniform stress of the transverse girders is achieved, the transverse partition girders can play the role of rigid support, the overall stress performance of the structure is increased, and the stress state of the single girder is improved evidently.

Description

technical field [0001] The invention relates to a bridge reinforcement technology, in particular to a reinforcement structure of an assembled continuous box girder and a method thereof. Background technique [0002] With the development of our country's national economy, the traffic volume continues to increase, and the vehicles are becoming heavy-duty. The bearing capacity of some bridges built in the past can no longer meet the needs of modern transportation, and many diseases have appeared. If they continue to be used, they need to be repaired. Reinforcement treatment. [0003] Assembled continuous box girder is a simple-supported and then continuous structure introduced in China in the 1990s, which solved the problem of continuous cracks on the bridge deck of simply supported beam bridges, and greatly improved the driving comfort. It has been promoted and used on a large scale throughout the country. However, this structure has the disadvantages of weak horizontal conn...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of large disturbance to the original beam, low construction efficiency and poor overall rigidity existing in the reinforcement of the existing assembled continuous box girder, the present invention provides a reinforced structure of the assembled continuous box girder and its method

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