Reinforcing structure for prestressed concrete box girder

Abstract

The invention relates to a reinforcing structure for a prestressed concrete box girder to reinforce the original prestressed concrete box girder. The reinforcing structure comprises steel channels, angle irons and an anchor bolt; the steel channels are fixed on a web, a top plate and a bottom plate of the original prestressed concrete box girder, a hole is formed in the steel channel, the anchor bolt buried on the original prestressed concrete box girder is used to fixedly connect the steel channel on the prestressed concrete box girder, the web, the steel channels on the top plate and the bottom plate are welded into a whole by means of welding, a weld joint is formed on the welded position, two angle irons form a group, two groups of the angle iron are formed, each group of the angle irons is in a V-shape, and the two groups of angle irons are mutually parallel, and are fixedly installed between the upper steel channel and the lower steel channel. A steel frame is additionally arranged, the rigidity of the whole section of the box girder is improved, the stress of the box girder is evener, the rigid supporting effect of the steel frame is played, the whole mechanical performanceof the structure is improved, the construction is convenient, and the problems of complicated method, high difficulty in construction, large increase of self-weight and the like existing in the reinforcing of the existing box girder are solved.

Description

technical field [0001] The invention belongs to the field of bridge reinforcement, in particular to a prestressed concrete box girder transverse reinforcement structure. Background technique [0002] With the development of my country's national economy, the number of automobiles is increasing, 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 various diseases have appeared, which affect the safety of bridges. Bridges must be reinforced. [0003] A crack in a concrete structure is an initial defect within the solid material and is a discontinuity. It belongs to the category of structural strength theory. There are many factors that lead to cracking of concrete structures, and the classification is different with different emphasis. A careful analysis of the causes of bridge cracks is the basis for judging the risk of bridge cracks and how to prevent and strengthen the...

AI Technical Summary

Problems solved by technology

The prior art mainly has the following two problems: 1. Although some technologies can play a good role in the prevention of bridge cracks, the reinforcement method is complicated, the construction difficulty is high, and the economic effect is not good

2. Most of the reinforcement technologies are aimed at the reinforcement and prevention of oblique cracks in the bridge, without considering the horizontal cracks of the bridge

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