Preparation method of PVC-FRP pipe steel-reinforced concrete composite column

Abstract

Belonging to the technical field of civil engineering, the invention provides a preparation method of a PVC-FRP (polyvinyl chloride-fiber reinforced plastic) pipe steel-reinforced concrete composite column, and is mainly applied in column structures in the civil work field. The composite column is mainly composed of an FRP cloth, a PVC pipe, section steel and internal core concrete. The restriction effect of the PVC-FRP pipe on the internal core concrete can substantially enhance the bearing capacity and ductility of concrete. And the configured section steel improves the bearing capacity and ductility of the composite column greatly. The composite column prepared by the method provided in the invention has the advantages of high bearing capacity, good ductility and endurance, convenient construction, and light mass, etc.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a preparation method of a PVC-FRP tubular steel-concrete composite column, which is suitable for column structures in bridges, ocean platforms, industrial workshops and high-rise buildings. Background technique [0002] The construction of various projects in China in the 21st century, from high-rise buildings to long-span structures, from modern bridges to underground projects, not only has a grand scale and huge investment, but also has a rapid construction momentum and increasingly complex key technologies. Ensuring the advancement, safety and durability of these engineering structures is undoubtedly the basic mission and primary task of our country's structural engineering science and technology workers. Therefore, the development of structural engineering puts forward an urgent demand for the innovation of structural systems. [0003] Reinforced concre...

AI Technical Summary

Problems solved by technology

[0003] Reinforced concrete structure is one of the most common structural forms. It mainly has the following disadvantages: the structure is self-heavy; the structural cross-section is large;

Concrete-filled steel tube structure is one of the main forms of composite structure. It mainly improves its bearing capacity and ductility through the restraint of steel tubes on concrete. Concrete cracking; greatly affected by electromagnetic waves

The FRP tube concrete structure has the following disadvantages: FRP tube is expensive; the performance is unstable (including long-term durability and maintenance); it is less used in engineering structures

However, the FRP stirrup concrete structure has the following disadvantages: the effect of improving the bearing capacity is poor; the ductility is poor; the concrete is unevenly stressed

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