Protective device for road-crossing cast-in-place box girder construction and construction method thereof

Abstract

The invention discloses a protective device for road-crossing cast-in-place box girder construction and a construction method thereof.The protective device comprises plywood, a plurality of pull rods and a plurality of I-shaped steel, the I-shaped steel is fixedly arranged on the bottom face of the plywood, and each I-shaped steel is provided with a first wing plate, a web and a second wing plate; the first wing plate and the second wing plate are oppositely arranged and connected through the web, the plywood is supported through the first wing plate and the second wing plate, the pull rod penetrates through the web and the plywood, the pull rod and the web are fixed through the first end of the pull rod, and the second end of the pull rod is fixed to the end face, facing the road surface, of the road-crossing cast-in-place box girder construction support. The plywood can reduce the dead weight of the structure and is convenient to process; in addition, the plywood is supported through the first wing plates and the second wing plates of the I-shaped steel, and the web plates of the I-shaped steel and the plywood are fastened through the pull rods to form a protection system, so that site materials for road-crossing cast-in-place box girder construction can be fully utilized, and the construction preparation time is shortened.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a protection device used for the construction of a cross-road cast-in-place box girder and a construction method thereof. Background technique [0002] At present, with the increasing use of cast-in-situ box girder, many protective safety facilities for cast-in-situ box girder construction have appeared on the market. However, at present, the protection and safety facilities traditionally used in the construction of cross-road cast box girder are mainly integrated protective sheds, such as the structure of a protective shed that spans a large-flow road under a limited headroom disclosed in Chinese Patent (Announcement No.: CN114059825A). This kind of protective structure includes components such as concrete expansion foundation, steel pipe pile, profiled steel cushion beam, distribution beam and dense mesh net. . Due to the large number of components in this protect...

AI Technical Summary

Problems solved by technology

Due to the large number of components of this protective structure, the cross-road construction protective shed has problems such as long construction preparation period, high material consumption, and cumbersome erection process. will be relatively more

At the same time, this kind of protective shed needs to repeatedly close the road to complete the construction during the construction process, which takes a long time to occupy the existing road and affects the traffic capacity

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