Prefabricated concrete large box girder structure connected in transverse bridge direction through dry connecting method

Abstract

The invention discloses a prefabricated concrete large box girder structure connected in the transverse bridge direction through a dry connecting method. The structure comprises construction pile foundations, a bearing platform, an upright, a construction support and a prefabricated foundation component. The bearing platform is installed at the upper end of the construction pile foundations, the upright is installed at the upper end of the bearing platform, the construction support is installed at the upper end of the upright, the prefabricated foundation component is placed at the upper end of the construction support, reinforcement cages are arranged in the prefabricated foundation component and provided with multiple prefabricated sections, and every two adjacent prefabricated sectionsare connected through a fixing piece. The structure has the beneficial effects that a concrete large box girder is built through a prefabrication assembling method, compared with a cast-in-place structure, a field construction period is shortened, the influence of construction on the environment is reduced, a field construction method is flexible, devices such as a crawler crane convenient to transfer can be used for lifting construction, multi-point construction can be achieved, large box girder dry connecting method prefabrication assembly can be achieved, construction procedures are few, and a large box girder landscape effect is good.

Description

technical field [0001] The invention relates to the technical field of prefabricated assembled bridge construction, in particular to a large prefabricated concrete box girder structure connected by a transverse bridge to a dry joint method. Background technique [0002] At present, the precast concrete large box girders commonly used in bridge structures generally adopt the segmental beam mode. The specific process is: divide the bridge into segments in the direction along the bridge direction, use the bridge erecting machine to hoist the segmental beams in place, and then tension them. The internal prestress connects the whole bridge as a whole. [0003] However, using the above method to assemble the segmental beams on site to form a large concrete box girder, the bridge erecting machine equipment needs to be invested in the site, and the bridge erecting machine equipment is inconvenient to move. It can only be moved forward to the bridge position of the next bridge after ...

AI Technical Summary

Problems solved by technology

[0003] However, using the above method to assemble the segmental beams on site to form a large concrete box girder, the bridge erecting machine equipment needs to be invested in the site, and the bridge erecting machine equipment is inconvenient to move. It can only be moved forward to the bridge position of the next bridge after completing the assembly of a bridge. , carry out the assembly of the next hole segmental beam

If the site construction conditions are limited and the construction period of some bridges needs to be postponed, it will bring huge troubles to the control of the construction period and construction cost of the bridge structure

[0004] The prefabricated small box girder structure can realize the prefabrication of split girders, and the construction site can be connected with the bridge to the wet joint, and can be erected by a portable crawler crane. However, the lower girder of the small box girder structure has more curves, and the landscape effect is worse than that of the large box girder. Does not meet landscape requirements for departmental areas

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