Steel-encased concrete steel column with built-in spiral stirrup

Abstract

The invention belongs to a building structure member in the technical field of building engineering, and particularly relates to a steel-encased concrete steel column with a built-in spiral stirrup. The steel-encased concrete steel column comprises longitudinal angle steels, horizontal connecting pieces, a spiral stirrup, a longitudinal reinforcement and core concrete, wherein each longitudinal angle steel is arranged in each corner of the column, the longitudinal angle steels are connected through horizontal connecting pieces, the horizontal connecting pieces are welded on the inner sides or the outer sides of a longitudinal angle steel flange plate to form a steel-encased framework, the longitudinal reinforcement is arranged on the inner wall of the spiral stirrup to form a spiral reinforcement cage which is arranged in the center of the steel-encased framework, the core concrete is filled in the internal space of the steel-encased framework to form the steel-encased concrete steel column with the built-in spiral stirrup. The steel-encased concrete steel column with the built-in spiral stirrup has the advantages of being high in bearing capacity, good in ductility, excellent in anti-seismic property, low in steel ratio, small in section dimension, convenient to construct, fast in progress and the like.

Description

technical field [0001] The invention belongs to a building structural component in the technical field of building engineering, in particular to a steel concrete column with built-in spiral stirrups and covered with an outside. Background technique [0002] Outsourcing steel concrete structure is a new type of steel and concrete composite structure, which has the advantages of both steel structure and reinforced concrete structure: (1) single component, easy to factory and mechanized production; (2) convenient connection, easy to use Flexible; (3) Good mechanical performance and high refractoriness; (4) Building structure and process pipelines can be fixed to any position of beams and columns without setting embedded iron parts; (5) Advanced technical and economic indicators. Therefore, the outsourcing steel concrete structure has been deeply researched and widely used at home and abroad. [0003] As an important vertical load-bearing member in the steel-clad concrete struc...

AI Technical Summary

Problems solved by technology

However, due to the structural characteristics of the steel-clad concrete column, longitudinal angle steel is arranged at the four corners of the cross-section, and the angle steel is welded to the flange plate of the angle steel by using transverse connectors (such as steel bars, panels, etc.), and the concrete is only in contact with the inner surface of the angle steel. , its cohesive force is small, and there is no protective layer to restrict the outward bending of the longitudinal angle steel. Therefore, the outsourcing steel mainly relies on the function of the transverse connector to restrain the core concrete, so as to ensure that the outsourcing steel and concrete deformation work together harmoniously, so Its binding effect on the core concrete is not strong, and the properties of steel and concrete cannot be fully utilized

As the height, span, and load dimensions of workshops and buildings are getting larger and larger in engineering practice, in order to meet the strength and stiffness requirements of structural components, if the general form of reinforcement is still used, it is necessary to increase the section size of the components. Construction is difficult, uneconomical and unsightly; if steel structure columns or steel tube concrete columns are used, the amount of steel used and the cost of fire prevention and antirust treatment will be increased, the cost is high and uneconomical, and it does not conform to the actual project

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