Prestress assembly type high-performance concrete-filled square steel tubular column-concrete beam joint and construction method thereof

Abstract

The invention provides a prestress assembly type high-performance concrete-filled square steel tubular column-concrete beam joint. The joint comprises a concrete-filled square steel tubular column, reinforced concrete beams and prestressing tendons, wherein prestressing tendon channels matched with one another are arranged in the concrete-filled square steel tubular column and the reinforced concrete beams; the concrete-filled square steel tubular column is connected with the insides of the reinforced concrete beams through the prestressing tendons penetrating through the prestressing tendon channels; the concrete-filled square steel tubular column is connected with outsides of the reinforced concrete beams through angle steel. The main construction steps are as follows: (1) manufacturing of the concrete-filled square steel tubular column; (2) manufacturing of the concrete beams; (3) on-site mounting. Compared with common beam-column joints, the joint has the advantages that the ductility is good, construction is simple and convenient, members are easy to replace, the anti-seismic performance is good and the like.

Description

technical field [0001] The invention relates to a novel beam-column joint structure, in particular to a prestressed assembled high-performance square steel tube concrete column-concrete beam joint and a construction method thereof. Background technique [0002] The beam-column joint is also called the joint core area, which plays the role of transferring load and connecting beam-column in the structure. Previous 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 connection properties of the beam-column joints play a decisive role in the overall performance 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 can be prevented earlier than the failure of beams and columns. The strength design of other component...

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".

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