Transverse segmental prefabricated prestressed concrete bent cap structure and assembling method thereof

Abstract

The invention discloses a transverse segmental prefabricated prestressed concrete bent cap structure and an assembling method thereof. The transverse segmental prefabricated prestressed concrete bentcap structure comprises a bent cap body and prefabricated stand columns. The bent cap body comprises a plurality of prefabricated sections spliced in the transverse direction; a hole through which a steel strand penetrates is reserved in each prefabricated section; every two adjacent prefabricated sections are connected through a wet joint section; an upper profile steel lap joint structure and alower profile steel lap joint structure which are matched with each other are pre-buried in the joint surfaces, close to the two sides of the wet joint section, of every two adjacent prefabricated sections respectively; the transverse steel bars on the top face, the bottom face and the vertical face of each prefabricated section extend into the range of the corresponding wet joint section, and thetransverse steel bars of each prefabricated section and the transverse steel bars of another adjacent prefabricated section are arranged in a staggered lap joint mode. The small-tonnage segmented prefabricated assembly of the large-volume prestressed concrete bent cap is achieved, stress of the bent cap structure can be better ensured, the structure quality is improved, and the construction speedis increased.

Description

technical field [0001] The invention relates to the technical field of prefabricated assembly and construction of bridges, in particular to the structure and assembly method of a prefabricated and assembled prestressed concrete cover beam in transverse sections. Background technique [0002] The prestressed concrete cover girders of the existing bridge structures are mostly constructed by the bracket cast-in-place method. However, with the development of society, cast-in-place cap beams with brackets gradually cannot meet people's construction requirements for safety, civilization and environmental protection. [0003] In recent years, integrally prefabricated cover beams, prefabricated lower floors, partially prefabricated cover beams cast-in-place on upper floors, and fully prefabricated assembled cover beams in transverse sections have been gradually applied in bridges. [0004] Among them, for bridges with wide decks, the overall prefabricated cover girder is heavy, and...

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Problems solved by technology

[0004] Among them, for bridges with wide decks, the overall prefabricated cover girder is heavy, and the requirements for lifting equipment are very high, and the economy is poor; when the tonnage of transportation and installation is limited, the prefabricated lower floor and the upper cast-in-place cover beam cannot fully meet the requirements. The needs of actual engineering; because the steel bars between the segments are not connected, the fully prefabricated cover beams in the transverse section rely entirely on prestressed steel strands to connect the segments into a whole. beam

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