Segmental box beam short line matching control and prefabrication construction method

Abstract

The invention discloses a segmental box beam short line matching control and prefabrication construction method. The method comprises the following steps that firstly, a beam field is divided into functional areas; secondly, end beams are manufactured in a beam manufacturing area; thirdly, a cast-in-place beam formwork is installed; fourthly, a tied steel reinforcement framework is put in, and theposition is controlled and checked; fifthly, concrete is poured into the cast-in-place beam formwork; sixthly, cast-in-place beams serve as matching beams to be prefabricated circularly, until pouring of adopted beam bodies is completed; and seventhly, the completed beam bodies are placed in a beam storing area to be maintained. According to the method, the beam field is divided into the functional areas, site construction flows can be organized effectively, and construction efficiency is ensured. By means of joint arrangement of a table base beam manufacturing system, a measuring control system and a supporting and adjusting platform, installing can be achieved, the position can be adjusted precisely, and real-time control can also be achieved. By means of design of a shear force key, line type butt joint of the later period can be ensured. By arranging different spraying facilities, maintaining of the later period can be carried out effectively.

Description

technical field

[0001] The invention belongs to the technical field of fabrication and construction of segmental box girders, in particular to a short-line matching control and prefabrication construction method of segmental box girders. Background technique

[0002] With the development of road construction, bridges, as an important component of roads, have been paid more and more attention. In the bridge construction, due to its unique composition method, the viaduct bridge road construction used to be constructed with full-height brackets, but this method is complicated to operate, and it consumes labor and construction costs, and the construction speed cannot meet the design requirements. Therefore, the prefabricated segmental box girder avoids the above disadvantages and has achieved considerable development. In the prefabrication of segmental box girders, long-line matching prefabrication is usually used, but this method has the disadvantages of high site requirements...

Examples

Embodiment Construction

[0044] Taking the construction of a prefabricated section of a railway box girder as an example, according to the structural type of the box girder and the linear characteristics of the bridge, the box girder section is prefabricated using the short-line matching method, that is, multiple pedestals are set in the prefabricated beam yard, and each pedestal is operated simultaneously. All beam sections are poured on prefabricated pedestals. When pouring, except that the prefabricated initial beam section of each span beam section is poured with a fixed end formwork 24 at one end and a movable end formwork 24 at one end, the remaining beam sections use a fixed end formwork 24 at one end and the poured previous beam section at the other end. Section 1 of the matching beam is poured to ensure the splicing accuracy of the matching joints of adjacent beam sections. After the initial health maintenance and form removal of the newly poured beam section, the first section of the matching...

technical field

[0001] The invention belongs to the technical field of fabrication and construction of segmental box girders, in particular to a short-line matching control and prefabrication construction method of segmental box girders. Background technique

[0002] With the development of road construction, bridges, as an important component of roads, have been paid more and more attention. In the bridge construction, due to its unique composition method, the viaduct bridge road construction used to be constructed with full-height brackets, but this method is complicated to operate, and it consumes labor and construction costs, and the construction speed cannot meet the design requirements. Therefore, the prefabricated segmental box girder avoids the above disadvantages and has achieved considerable development. In the prefabrication of segmental box girders, long-line matching prefabrication is usually used, but this method has the disadvantages of high site requirements...

Examples

Embodiment Construction

[0044] Taking the construction of a prefabricated section of a railway box girder as an example, according to the structural type of the box girder and the linear characteristics of the bridge, the box girder section is prefabricated using the short-line matching method, that is, multiple pedestals are set in the prefabricated beam yard, and each pedestal is operated simultaneously. All beam sections are poured on prefabricated pedestals. When pouring, except that the prefabricated initial beam section of each span beam section is poured with a fixed end formwork 24 at one end and a movable end formwork 24 at one end, the remaining beam sections use a fixed end formwork 24 at one end and the poured previous beam section at the other end. Section 1 of the matching beam is poured to ensure the splicing accuracy of the matching joints of adjacent beam sections. After the initial health maintenance and form removal of the newly poured beam section, the first section of the matching...

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