Circular Steel Tube Confined Reinforced Concrete Column-Steel Beam Frame Joints with Steel Beams Through

Abstract

The invention provides a round steel tube confined reinforced concrete column-steel beam frame joint with a through steel beam. The joint comprises a column round steel tube I, a column round steel tube II, the joint zone through beam, a joint zone round steel tube, joint zone stirrups and concrete. The column round steel tube II and the column round steel tube I are located on the upper side and the lower side of the joint zone through beam respectively. The joint zone through beam can transfer bending moment and shearing force to a core zone directly through pins (or other forms of shear keys) on the beam, the steel beam and the joint core zone concrete work jointly, the joint zone round steel tube does not bear shearing force directly and is prevented from buckling, and thus the steel tube can perform the circular confining function fully to confine the joint zone concrete and guarantee the bearing capacity and ductility of the joint. The joint is good in stress performance, it can be guaranteed that the joint is safe, reliable, good in integrality, clear and definite in force transfer and convenient to construct, and the 'strong joint and weak member' design principle can be met.

Description

technical field [0001] The invention belongs to the technical field of building structures, in particular to a circular steel pipe-constrained reinforced concrete column-steel beam frame joint. Background technique [0002] The steel pipe confined concrete column is a composite structure vertical load-bearing member formed by pouring concrete inside the steel pipe. The steel tubes of circular steel tube confined concrete columns are broken at the beam-to-column joints to maximize their confinement. In actual engineering, frame columns are generally affected by the joint action of axial force, bending moment and shear force. Therefore, when applying steel tube confined concrete technology, it is necessary to arrange steel bars in the column to form steel tube confined reinforced concrete columns. [0003] Steel pipe bound reinforced concrete columns have good compressive performance and high rigidity; steel beams have good bending resistance, light weight, and convenient and...

AI Technical Summary

Problems solved by technology

[0004] The joint connection and structure directly affect the stability and safety of the building structure. For the steel-concrete composite structure, the joint connection and structure are the key and difficult points. The connection structure of traditional reinforced concrete and steel beams, the bearing capacity of reinforced concrete columns confined by steel pipes is much higher than that of ordinary reinforced concrete columns of the same cross-sectional size, which will cause the beam-column joints to become weak parts, which does not meet the design principle of "strong nodes, weak components"

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