Partially open steel beam with functional partition design and construction process thereof

Abstract

The invention provides a partially open steel beam with a functional partition design and a construction process thereof. The partially open steel beam with the functional partition design comprises steel main beams and a closed steel box beam; the number of the steel main beams is two; a plurality of open-section middle cross beams are arranged between the two steel main beams; a plurality of cantilever beams are arranged on the side wall of each steel main beam; a plurality of open-section box internal transverse diaphragms are arranged in the steel main beams; the steel main beams, the plurality of open-section box internal transverse diaphragms and the plurality of open-section middle cross beams form open steel box beams; the closed steel box beam is positioned on a support; the closed steel box beam is mutually formed by the steel main beams, a closed bottom sealing plate and closed-part steel box web plates; closed transverse diaphragms are arranged in the steel main beams; twobeam-to-beam closed transverse diaphragms are arranged between the two steel main beams; and an orthotropic steel bridge deck plate is arranged on the two steel main beams. The partially open steel beam with the functional partition design has the advantages that the structure is simple, the stress performance is good, the structural rigidity is enhanced while the force transmission effect of a steel box is improved, the structure construction is convenient, and the maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of bridge design and construction, in particular to a partially exposed steel girder with a functional partition design and a construction process thereof. Background technique [0002] Continuous girder bridges are widely used in my country. The internal force distribution of continuous girder bridges is characterized by large negative bending moment and shear force at the middle support. The traditional concrete continuous beam resists the negative bending moment by configuring the prestressed concrete roof at the middle support. The construction process is cumbersome and the construction period is long, which does not meet the requirements of rapid construction of municipal bridges. Traditional steel girder bridges are generally single-box or single-box multi-room cross-sections, and the overall hoisting weight is heavy, so they are usually hoisted in segments and welded into a whole on site, which result...

AI Technical Summary

Problems solved by technology

The traditional concrete continuous beam resists the negative bending moment by configuring the prestressed concrete roof at the middle support. The construction process is cumbersome and the construction period is long, which does not meet the requirements of rapid construction of municipal bridges.

Traditional steel girder bridges are generally single-box or single-box multi-room cross-sections, and the overall hoisting weight is heavy, so they are usually hoisted in segments and welded into a whole on site, which results in a large amount of welding on site, and the welding environment in the box is poor , welding quality is difficult to guarantee

There will be vertical and horizontal blocks when dividing segments, which is not conducive to the quality control of on-site construction and the improvement of construction speed

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