Self-restoration concrete frame column sliding node

Abstract

The invention relates to a self-restoration concrete frame column sliding node. The self-restoration concrete frame column sliding node is composed of members of a concrete frame beam column, an upperreset steel plate, a lower reset steel plate, a rubber plate, angle iron, a viscous damper and the like. The column is separated by the reset steel plates at the node, the four sides of the column atthe node are connected with a girder through the angle iron, a long-strip-shaped hole is formed in the angle iron, the angle iron is connected with the concrete frame beam column through a pressure-bearing high-intensity bolt, during normal use, it is guaranteed that the members jointly work as a whole, the size of adjusting holes can control that the column is sideway instead of swinging duringan earthquake, a rectangular pyramid is adopted by the surface occlusion shape of the upper reset steel plate and the lower reset steel plate, when the column is sideway, the contact surface area canstill meet the requirement, the viscous damper is arranged between the angle iron and the girder, thus the energy can be consumed during the earthquake, and the angle iron and the girder can completecolumn restoration with dead weight.

Description

technical field [0001] The invention belongs to the anti-seismic field of concrete building structures, and in particular relates to a self-resetting concrete frame column sliding node. Background technique [0002] Different from the previous use of high-performance materials, components and systems to resist earthquake action, in recent years, the design concept of reducing earthquake action by weakening structures is becoming mainstream. As a typical example, the swing column introduces the concrete structure from the steel structure, which turns the upper and lower ends of the column into hinges, which reduces the structural rigidity and can significantly reduce the structural response during earthquakes. When the structure is swaying, it can consume energy and control it with dampers. displacement. However, it also has many disadvantages: after the column foot is rounded, it loses its energy dissipation capacity and also presents negative stiffness, which increases the...

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Problems solved by technology

However, it also has many disadvantages: after the column foot is rounded, it loses its energy dissipation capacity and also presents negative stiffness, which increases the difficulty of structural design, and requires additional prestressed tendons to ensure restoration. In cast-in-place concrete The construction of the structure is inconvenient

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