Pre-stress fabricated high-performance circular steel tube concrete pillar-concrete beam node and construction method thereof

Abstract

The invention provides a pre-stress fabricated high-performance circular steel tube concrete pillar-concrete beam node. The node comprises a concrete pillar, reinforced concrete beams and prestressed tendons; prestressed tendon hole passages which are mutually matched are formed in the concrete pillar and the reinforced concrete beams correspondingly; the square steel tube concrete pillar and the interiors of the reinforced concrete beams are connected through the prestressed tendons penetrating through the prestressed tendon hole passages; and the square steel tube concrete pillar and the exteriors of the reinforced concrete beams are connected through angle iron. According to the main construction steps of the pre-stress fabricated high-performance circular steel tube concrete pillar-concrete beam node, (1) the steel tube concrete pillar is manufactured; (2) the concrete beams are manufactured; and (3) on-site mounting is conducted. Compared with a common beam pillar node, the fabricated node has the advantages that ductility is good, construction is easy and convenient, components are easy to replace, and seismic performance is good.

Description

technical field [0001] The invention relates to a novel beam-column joint structure, in particular to a prestressed assembled high-performance circular steel pipe concrete column-concrete beam joint and a construction method thereof. Background technique [0002] The beam-column joint refers to the core area of ​​the joint where the frame beam and the frame column intersect, and plays the role of connecting beam-column, transmitting internal force and coordinating deformation in the structure. A large number of seismic data show that most of the structural damage in earthquakes occurs at the beam-column joints, or the collapse of the entire structure is caused by the damage of the beam-column joints. Therefore, the safety and reliability of beam-column joints is the prerequisite to ensure the normal function of the structure. Only through design and construction, the strength and ductility of joints can be improved, and the shear and compression brittle failure of joints ca...

AI Technical Summary

Problems solved by technology

The overall rigidity of the joint through the center is relatively high, but the structure of the joint is complex, and pouring is difficult, and there is a risk of reducing the bearing capacity of the column due to local damage to the steel pipe

At the same time, these two types of traditional joint forms limit the relative displacement in the joint, and have high stiffness, but poor ductility, which cannot effectively consume the seismic action, and often fail before beams and columns, making it difficult to meet the requirements of "strong joints".

Images