Composite column and fabrication method thereof

Abstract

The invention discloses a composite column and a fabrication method of the composite column. The composite column comprises a high-strength concrete core and a prefabricated steel fiber reinforced concrete pipe, wherein the high-strength concrete core is cast in situ into the steel fiber reinforced concrete pipe; stirrups and longitudinal bearing steel bars are embedded into the steel fiber reinforced concrete pipe; and the surfaces of the longitudinal bearing steel bars are coated with antirust coatings. According to the composite column, the antirust coatings are arranged on the surfaces of the longitudinal bearing steel bars, so that the corrosion resistance of the longitudinal bearing steel bars can be improved by utilizing the antirust coatings; adhesive forces between the longitudinal bearing steel bars and the steel fiber reinforced concrete pipe are small due to action of the antirust coatings, so that deformation of the longitudinal bearing steel bars is relatively independent; when the composite column generates larger deformation due to an earthquake or a large outside acting force, tensile deformation of a concrete part of the steel fiber reinforced concrete pipe is reduced and cracking of concrete is delayed; and the recovery capability of the longitudinal bearing steel bars is significant after the earthquake or deformation reduction due to constraint reduction, so that repair is easy and the resource is saved.

Description

technical field [0001] The invention relates to the technical field of load-bearing elongated buildings, and more specifically, to a composite column and a manufacturing method thereof. Background technique [0002] At present, with the development of my country's construction industry and construction technology, the area of ​​land resources has decreased, and more and more high-rise buildings and super high-rise buildings have entered the lives of modern people. Reinforced concrete columns are widely used as pillars, piers or foundation columns. [0003] In recent years, with the development of high-rise and super high-rise buildings, the bearing capacity and seismic performance of traditional ordinary concrete columns are far from meeting the actual needs. As a new building material, high-strength concrete has the advantages of high compressive strength, strong deformation resistance, and good durability, and is widely used in the production of main vertical load-bearing...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a semi-fabricated laminated column with simple process, high compressive strength, good ductility, high structural safety performance and high restorability and its manufacturing method, so as to solve the problem of poor compressive capacity of existing reinforced concrete columns , poor ductility, low structural safety performance, and poor recovery after deformation

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