Self-resetting whole assembly type friction energy dissipation steel frame beam-column joint

Abstract

The invention relates to a self-resetting whole assembly type friction energy dissipation steel frame beam-column joint. The self-resetting whole assembly type friction energy dissipation steel framebeam-column joint comprises a swing column, a frame beam, a beam-column connection vertical plate, a beam-column connection bottom plate and a base plate stiffener plate. The sections of the swing column and the frame beam are in H shapes, and each comprise a web plate on the middle and flanges on the two sides, the swing column is in a breaking type, the two segments are located above and below the frame beam correspondingly, the beam column connecting bottom plate is arranged between the swing column and the flanges of the frame beam, the beam column connecting bottom plate and the flanges of the frame beam are provided with connecting holes allowing the beam-column connection vertical plate to penetrate through, the beam-column connection vertical plate vertically penetrates through theconnecting holes, the middle is tightly attached to the web plate of the frame beam and is fixedly connected through a common bolt, and the upper portion and the lower portion are in sliding connection with the web plate of the swing column through friction type bolts. According to the technical scheme, the plastic rotation capacity of the joint can be effectively improved, beam columns generateproper swing under the large and medium earthquake, the beam columns generate proper friction to consume earthquake energy, large plastic damage of the main structure due to the large earthquake can be prevented, and the repair after the earthquake can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of steel structure beam-column joints, and in particular relates to a self-resetting fully assembled frictional energy-dissipating steel frame beam-column joint which is suitable for high requirements on seismic energy consumption. Background technique [0002] The beam-column joint is an important part of the steel frame structure system, which requires a large plastic rotation capacity to avoid brittle failure of the structure. In order to improve the plastic rotation capacity of beam-column joints, its energy dissipation and shock absorption design has become one of the key issues in steel structure design. Under the action of strong earthquake, the overall structure produces a plastic hinge at the end of the beam. A plastic hinge is a point where the fibers on the opposite side of a structural member yield but are not damaged. This point is considered to be a plastic hinge. Such a member becomes It beco...

AI Technical Summary

Problems solved by technology

Today's beam-column joints are mostly fixed by bolts or welding. This connection method makes the beam-column joints lack of plastic rotation capacity, which will cause excessive structural damage of the main body during strong earthquakes, and large residual deformation after the earthquake. Difficult to repair, will cause greater economic loss

Images