Segment prefabricated and assembled bridge pier stud and construction method thereof

Abstract

The invention discloses a segment prefabricated and assembled bridge pier stand. The pier stand comprises a bearing platform, a pier stud body and a bent cap connecting segment which are arranged frombottom to top, and the pier stud body is prefabricated and assembled in a segmented mode and comprises a plurality of same pier stud sections; the lower portion of each pier stud section is a protruding prismoid, the upper portion of each pier stud section is a prismoid groove, the protruding prismoid and the prismoid groove are nested in a spaced mode, vertical steel bars are pre-buried in the pier stud sections and protrude upwards, and grouting sleeves are arranged at the lower ends of the vertical steel bars and connected with the vertical steel bars; the upper portion of the bearing platform is an annular protrusion, vertical steel bars are embedded in the annular protrusion and protrude upwards, and a prismoid groove is formed in the annular protrusion on the upper portion of the bearing platform; the lower portion of the bent cap connecting section is a protruding prismoid, vertical reinforcing steel bars are embedded in the lower portion of the bent cap connecting section, grouting sleeves are arranged at the bottoms of the vertical reinforcing steel bars and connected with the vertical reinforcing steel bars, and the protruding prismoid on the lower portion of the bent cap connecting section and prismoid groove in the upper portion of each pier stud section are nested in a clearance mode. The bridge pier stud is good in stress and stable in structure. The invention further discloses a construction method of the bridge pier stud. Construction is convenient and efficient.

Description

technical field [0001] The invention relates to the technical field of prefabricated bridge construction, in particular to a segmental prefabricated and assembled bridge pier column and a construction method thereof. Background technique [0002] In the construction of modern reinforced concrete bridges, the on-site assembly technology in the prefabrication stage adopts the prefabricated pier columns and cover beams in the factory, and transports them to the site for assembly. This construction technology has the advantages of convenient transportation, component quality assurance, greatly reduced on-site construction operations, and fast construction speed. , short construction period, green environmental protection and many other advantages, it will gradually develop into the mainstream direction of future municipal traffic engineering and railway engineering construction technology; [0003] In the bridge structure, the pier column is an important anti-lateral component, ...

AI Technical Summary

Problems solved by technology

[0003] In the bridge structure, the pier column is an important anti-lateral component, and the manufacturing quality of the pier column directly affects the seismic performance of the entire bridge; in the existing on-site assembly technology of prefabricated segments, the on-site assembly of the pier column mainly includes dry joints. There are two ways of assembling, namely, the discontinuous concrete pouring between the pier column, the cap, and the pier column segment, which leads to the lack of integrity of the pier column and affects its seismic performance. Therefore, There is an urgent need in the industry for a segmental prefabricated and assembled bridge pier column that can ensure that the concrete pouring between the pier column and the cap and the pier column segment will not affect the aseismic performance of the pier column

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