Steel reinforced concrete combination pillar with built-in bunched spiral stirrups and manufacturing method

Abstract

The invention discloses a steel reinforced concrete combination pillar with built-in bunched spiral stirrups. The combination pillar comprises angle steel, steel lacing and batten elements, the spiral stirrups, longitudinal reinforcing steel bars and concrete. The section of the combination pillar is in a square or rectangular shape. The spiral stirrups are arranged side by side and bundled with the longitudinal reinforcing steel bars to form a reinforcement cage. The reinforcement cage is wrapped with the concrete. The concrete is wrapped with a section steel truss. The section steel truss is formed by welding the angle steel and the steel lacing and batten elements. Due to the fact that the concrete is wrapped with the section steel, the problem that the concrete is cracked and peeled off early, and therefore the bearing capacity is lowered is effectively solved. The spiral stirrups arranged side by side produce a restriction effect on the concrete inside therein, and the problem that the spiral stirrup concrete pillar is weak in restriction ability under the bending effect is solved. The flexural rigidity, flexural capacity and anti-seismic property of the combination pillar are effectively improved through the section steel truss. Reinforcing steel bars in a frame node area middle beam can penetrate through the section of the pillar, and construction is convenient and fast. The steel reinforced concrete combination pillar is particularly applicable to a structural pillar with the high requirement for anti-seismic property or a heavy-load pillar bearing large vertical loads.

Description

technical field [0001] The invention relates to a building structure component, in particular to a steel-concrete composite column with built-in bundled spiral stirrups and a manufacturing method thereof. Background technique [0002] Due to the confinement effect of the spiral stirrup on the concrete, the core concrete of the spiral stirrup concrete column is in a three-dimensional compression state when it is under pressure, and has good bearing capacity and ductility. At the same time, due to the configuration of continuous transverse reinforcement, it has excellent seismic resistance. Performance and energy dissipation capacity, are widely used in various structures. However, the structural column still has some unavoidable shortcomings, which limit its application in engineering structures with higher seismic requirements and larger vertical loads; for example: [0003] 1. Since the concrete column with spiral stirrups has a concrete protective layer, the protective la...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a steel-concrete composite column with built-in and bundled spiral stirrups with high bearing capacity, good ductility, good seismic performance and convenient construction, so as to overcome the constraint effect of spiral stirrups in the existing spiral stirrup concrete column technology Inadequacies such as poor and limited cross-sectional forms

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