Prefabricated assembled solid single-column pier based on root expanded section and construction method thereof

Abstract

The invention relates to a prefabricated assembled solid single-column pier based on root section expansion. The pier comprises a bearing platform and a pier stud arranged on the bearing platform. A longitudinal groove is formed in the upper surface of the bearing platform, the section of the root of the pier stud is locally enlarged, the pier stud is arranged in the longitudinal groove, and a fiber concrete FRC connecting belt is poured in a gap between the inner wall of the longitudinal groove and the outer wall of the root of the pier stud; the pier stud is connected with the longitudinal bars of the bearing platform through grouting corrugated pipes; the pier stud and the bearing platform are tensioned through prestressed tendons; the bottom of the pier stud adopts an expanded sectionform, so that the overall stability of the pier is improved; the connection mode of the grouting corrugated pipe is added at the expanded section, so that the torsion resistance is improved structurally; the prestressed tendons provide a self-resetting function; the fiber concrete FRC material is locally adopted to replace common concrete, so that the crack resistance is improved. The prefabricated assembled solid single-column pier is novel in structure, good in mechanical property, safe, reliable, convenient and fast to construct on site and extremely short in construction time, and has goodtechnical and economic benefits.

Description

technical field [0001] The invention relates to a prefabricated and assembled solid single-column pier based on the enlarged section of the root and a construction method thereof, belonging to the technical field of road and bridge construction. Background technique [0002] Modern bridges have higher and higher requirements for environmental protection and industrialization, and fully assembled bridges with fabricated piers are the development trend of bridge construction. In addition to safety and durability, bridge structures also require maximizing construction quality, minimizing disruption to existing traffic, construction noise, and operating costs. The section of the connection part of the current connection method of the urban bridge assembled concrete pier is weakened, and the stiffness and strength are reduced, or the connection joints are flat joints, which is not conducive to its torsion resistance, and the composite loads such as compression, bending and torsio...

AI Technical Summary

Problems solved by technology

The cross-section of the connection part of the prefabricated concrete piers of urban bridges is currently weakened, and the stiffness and strength are reduced, or the connection joints are all flat joints, which is not conducive to its torsion resistance, and the combined loads such as compression, bending and torsion in earthquakes will cause Severely damaged pier

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