Bridge transverse integral reinforcement construction method

Abstract

The invention provides a bridge transverse integral reinforcement construction method. The bridge transverse integral reinforcement construction method comprises the following steps: 1) prefabricatingan upper chord, a lower chord and a first web member; 2) forming a hole in a bridge deck of the existing bridge body; 3) mounting an upper chord on the bridge deck; (4) mounting lower chords to enable the lower chords to cling to the bottom surface of the prefabricated small box girder; 5) mounting a first web member to enable the first web member to cling to the outer side surface of the prefabricated small box girder; 6) accurately adjusting the positions of the upper chord, the lower chord and the first web member, and welding the joints; 7) connecting and fixing the upper chord member, the lower chord member and the existing bridge body through drilling and bolt planting; and (8) finishing the holes of the bridge deck slab to finish the recovery of the bridge deck slab. The multiple small box girders are effectively connected into a whole in the transverse direction of the bridge through the steel trusses, and compared with concrete diaphragm girders and the like, the transverse overall rigidity of the bridge can be effectively improved, the self-weight is low, clearance under the bridge is not affected basically, construction is convenient, fast and efficient, the construction quality is easy to guarantee, construction investment is small, and influences on the surrounding environment are small.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a construction method for lateral integral reinforcement of bridges. Background technique [0002] With the rapid development of my country's transportation industry, the traffic volume of highway vehicles has increased year by year, and the situation of overloaded and overloaded transportation has become more and more serious. The load standards used in the early designed bridges were relatively low, and the actual load of the transport vehicles exceeded the design load. Many bridges suffered different types and degrees of disease after long-term operation, which seriously affected the normal operation and structural safety of the bridges. [0003] Prefabricated small box girder bridges have been popularized nationwide since the 1990s. They are widely used in highway and municipal fields, and have certain economic and technological advantages. However, co...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of weak lateral connection and poor structural integrity of the existing assembled small box girder bridge, which cause serious shortage of bridge structural rigidity and durability

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