Anti-seismic beam-column joint column hoop fixing method and structure

Abstract

The invention discloses an anti-seismic beam-column joint column hoop fixing method and structure. The anti-seismic beam-column joint column hoop fixing method comprises the following steps of: binding or welding a group of internal hooping bars at designed interval on a group of column bars penetrating through a storey formwork surface; then binding or welding a column external hooping bar cage and internal hooping together; and then positioning and connecting the other ends of the X-direction beam bars. According to the invention, a column external hooping bar cage construction method is adopted, and distances among the external hooping bars are fixed by limiting bars at the outer sides of corners of the column bars. The anti-seismic beam-column joint column hoop fixing method and structure have the advantages of simple structure and process and convenience for operation and the like, effectively ensure design quality and can eliminate hidden quality hazards having influence on concrete construction and ensure that deviation of the vertical steel bars cannot happen. The anti-seismic beam-column joint column hoop fixing method and structure solve the problems that the beam-column joint hooping bars are not bound, are not sufficient in quantity and are not distinct in gaps, or a plurality of hooping bars are piled together, or no hooping bars exist in an empty section and the like in the binding process under the adverse factors of small size of a joint and dense steel bars in the construction process of beam-column joints.

Description

technical field [0001] The invention relates to a method and a structure for fixing a hoop of an aseismic beam-column node, and belongs to the technical field of construction. Background technique [0002] With the rapid development of my country's construction industry, frame structure buildings have been widely used in multi-storey and high-rise buildings due to their good earthquake resistance. The key anti-seismic points of the frame structure are the foundation and the beam-column structure. According to the damage investigations of previous earthquakes, it is shown that when an earthquake occurs, most of the frame structure buildings occur in the joint area of ​​beams and columns, and the joint damage is mainly oblique shear failure and reinforcement anchorage failure, until the entire frame structure collapses. Therefore, the beam-column joints of the frame structure, as the core area of ​​the joints, should have sufficient strength and necessary plasticity. From th...

AI Technical Summary

Problems solved by technology

When arranging the outer stirrups of the column, due to the criss-crossing of the beams, the reserved outer stirrups are often deformed when the beam is put into the mold, and the reserved amount is not accurate, and the position is wrong, resulting in too dense or loose column outer stirrups. It can't play its due role, but because the stirrups outside the column are too concentrated, the concrete that will be poured overhead will bury hidden dangers to the quality of the beam-column joints

In the actual construction of the beam-column joint area, there are often lack of binding of the outer stirrups of the column, insufficient quantity, uneven spacing, or multiple stirrups piled up together, so that some column bars have no stirrups for a long period of time. These problems are not necessary. It is beneficial to the earthquake resistance of the frame structure and affects the safety of the building

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