Reinforced concrete frame joint with vertical tie bar

Abstract

The invention relates to a reinforced concrete frame joint with a vertical tie bar, which belongs to the technical field of reinforced concrete frame beam column joints. The reinforced concrete frame joint with the vertical tie bar comprises a joint core area, a column, a beam, a beam longitudinal bar, a beam stirrup, a column longitudinal bar, a column stirrup and a joint vertical tie bar, wherein the joint core area is a rectangular region formed by intersecting the column and the beam; the joint vertical tie bar with the diameter of 6 mm to 20 mm is configured in the joint core area and vertical to the plane formed by the column and the beam; the tail end of the joint vertical tie bar is made into a 180-degree hook; and the length of the straight section of the end of the hook is not less than 10 times of the diameter of the tie bar. The reinforced concrete frame joint with the vertical tie bar can provide a restraint function for concrete of the joint core area, saves reinforcing steel bars, and can improve the earthquake resistance, such as bearing capacity and ductility, of the joint core area.

Description

technical field [0001] The invention relates to a reinforced concrete frame joint equipped with vertical tension bars, which belongs to the field of design of reinforced concrete frame beam-column joints. Background technique [0002] my country is an earthquake-prone country, and unpredictable earthquakes have caused huge loss of life and property to human society. At the same time, reinforced concrete frame structures are widely used in the field of civil engineering in my country. Due to the suddenness, huge destructiveness and unpredictability of earthquakes, how to improve the seismic performance of reinforced concrete structures is the main problem in preventing earthquake disasters. In the reinforced concrete frame structure, the joint is an important stress-bearing part of the frame structure; under the action of a strong earthquake, the core area of ​​the joint is subject to complex effects of bending moment, shear force and axial pressure, which becomes the weak pa...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of reinforced concrete frame joint with vertical tie bar for the insufficient seismic performance such as stiffness and ductility of the above-mentioned reinforced concrete frame joint, which cannot meet the "strong joint" requirement of the seismic code; The stiffness, ductility and other seismic performance of the joint core area

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