Self-resetting beam column friction energy dissipation joint structure and construction method thereof

Abstract

The invention discloses a self-resetting beam column friction energy dissipation joint structure and a construction method thereof. The self-resetting beam column friction energy dissipation joint structure comprises a steel column, a middle beam, short beams, connecting plates, a brass friction plate, spring baffles, high-strength anchor rods and disc springs. One ends of the short beams are fixedly connected with the flanges of the side wall of the steel column, and a gap exists between the middle beam and the short beams; one ends of the connecting plates are fixedly connected with the webof the middle beam, and the other ends are hinged to the webs of the short beams; the brass friction plate is arranged between the connecting plates and the webs of the short beams; one ends of the high-strength anchor rods penetrate through the spring baffles, and the other ends of the high-strength anchor rods penetrate through the two flanges of the steel column and are fixed. The spring discsare sleeved on the high-strength anchor rod on one side, far away from the steel column, of the spring baffles. Structural construction is completed through basic construction, small earthquake testing, parameter selection, node performance design and large earthquake inspection. According to the invention, the formation of a plastic hinge of a traditional steel frame beam-column joint is effectively avoided, the beam column joint is not damaged or slightly damaged under the action of a large earthquake, and the post-earthquake joint can be put into use without repair.

Description

technical field [0001] The invention relates to the technical field of energy dissipation and shock absorption of building structures, in particular to a self-resetting beam-column frictional energy-dissipating node structure and a construction method thereof. Background technique [0002] At present, the traditional anti-seismic thinking takes protecting life as the primary goal, and prevents structures from collapsing under strong earthquakes through ductile design. This ductile design comes at the expense of allowing plastic deformation of the main stressed members of the structure. At the same time, the structure may be subjected to earthquakes stronger than the fortification intensity during use, which will also cause damage and residual deformation of the structure. In fact, earthquake disasters in recent years have shown that the number of building collapses and casualties in earthquakes has been effectively controlled, but the economic losses and social impacts caus...

AI Technical Summary

Problems solved by technology

[0004] However, it is difficult to control the damage mode and energy-dissipating parts of the traditional beam-column joints in the existing steel frame under earthquake action. Plastic hinges appear at the beam ends, and the joints are seriously damaged after the earthquake, with large residual deformation and difficult repair.

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