UHPC partially-prefabricated column provided with steel pipes and U-shaped stirrups and construction method of UHPC partially-prefabricated column

Abstract

The invention discloses a UHPC partially-prefabricated column provided with a steel pipe and a U-shaped stirrup and a construction method of the UHPC partially-prefabricated column, and relates to the technical field of concrete prefabricated shell production. The UHPC partially-prefabricated column provided with the steel pipe and the U-shaped stirrup comprises a steel rib body, and the steel rib body comprises the polygonal steel pipe and a plurality of steel bar assemblies; a post-pouring filling space used for pouring post-pouring concrete is formed in the polygonal steel pipe, the steel bar assemblies are distributed along the periphery of the polygonal steel pipe, each steel bar assembly comprises a plurality of longitudinal bars and a plurality of U-shaped stirrups used for fixing the longitudinal bars, and the U-shaped stirrups are installed in the length direction of the polygonal steel pipe from top to bottom. Two ends of the end part of the U-shaped stirrup penetrate through the polygonal steel pipe; the periphery of the steel rib main body is coated with the prefabricated shell, and the prefabricated shell is formed by pouring UHPC (Ultra High Performance Concrete). The self weight can be reduced, internal concrete can be restrained, local buckling of the longitudinal bars is prevented, and connection with longitudinal bars of other components is facilitated.

Description

technical field [0001] The invention relates to the technical field of concrete prefabricated shell production, in particular to a UHPC partial prefabricated column provided with steel pipes and U-shaped stirrups, and also relates to a construction method. Background technique [0002] In construction projects, prefabricated concrete columns are often produced for on-site assembly. Compared with cast-in-place concrete columns, prefabricated concrete columns have higher production efficiency, less environmental pollution, less material and energy waste, and better project quality. And other advantages, it has been widely used in the field of civil construction at home and abroad. However, the prefabricated concrete column has a large self-weight, does not use transportation, and is difficult to hoist. Steel-reinforced concrete prefabricated columns have light weight and are convenient for transportation and construction, but they still have some limitations on the restraint ...

AI Technical Summary

Problems solved by technology

However, the assembled concrete prefabricated column has a large dead weight, does not use transportation, and is difficult to hoist

Steel-reinforced concrete prefabricated columns are light in weight, convenient for transportation and construction, but there are still some limitations in the restraint of internal concrete and the prevention of local buckling of longitudinal reinforcement, and the connection with other components is not considered

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