Total-fabricated fraction energy consumption self-resetting beam column joint and assembling method thereof

Abstract

The invention relates to a total-fabricated fraction energy consumption self-resetting beam column joint and an assembling method thereof. The total-fabricated fraction energy consumption self-resetting beam column joint comprises a beam end plate, a column end plate and two connecting plates, wherein the connecting plates are arranged in a front-and-back symmetrical mode, one end of the column end plate is fixed to a column end, the other end of the column end plate is fixedly connected to the column side ends of the two connecting plates through bolts A; one end of the beam end plate is fixed to a beam end, the other end of the beam end plate is hinged to the beam side ends of the two connecting plates through bolts B; at least two threaded holes are formed in wing plates of the beam endplate in a front-and-back symmetrical mode, the threaded holes of the upper wing plate and the lower wing plate are correspondingly arranged in a one-to-one mode, through holes matched with the threaded holes on the same sides are formed in both the upper parts and the lower parts of the beam side ends of the two connecting plates; bolts C penetrate through the through holes and then are connected with the beam side ends through threaded holes; and disc-shaped springs sleeve the bolts C, one ends of the disc-shaped springs abut against bolts heads of the bolts C, and the other ends of the disc-shaped springs abut against the connecting plates. According to the total-fabricated fraction energy consumption self-resetting beam column joint, the structure is simple, the design is reasonable,and comparatively large resetting force can be generated under comparatively small relative rotation of the beam column.

Description

technical field [0001] The invention relates to a fully-assembled frictional energy-dissipating self-resetting beam-column joint and an assembly method thereof, belonging to the technical field of energy dissipation and shock absorption of civil engineering structures. Background technique [0002] Most of the existing self-resetting beam-column joints use external prestressed tendons, prestressed steel strands or various forms of spring groups, etc., and use the reaction force provided by these external components to realize the self-resetting function of the joint after an earthquake . [0003] On July 24, 2018, the State Intellectual Property Office published a patent application for a "self-resetting beam-column anti-seismic joint based on carbon fiber disc spring" (notification number: CN 108316472 A). Yielding dissipates energy, and carbon fiber disc springs are used to provide high resistance and recovery force for the nodes, so that the nodes can still reset themsel...

AI Technical Summary

Problems solved by technology

The defect of this technical solution is that when the joint undergoes relatively large beam-column relative motion (including rotation and translation), the angle steel connecting the beam-column (positioning beam-column) will undergo corresponding plastic deformation, even if the carbon fiber disc spring causes the joint to have a certain The self-resetting of the angle steel cannot solve the problem of plastic deformation of the angle steel, so that the nodes cannot be self-resetting to a large extent

At the same time, the high price of carbon fiber materials prevents this technical solution from being promoted in practical applications.

[0004] On February 01, 2019, the State Intellectual Property Office authorized and announced the utility model patent of "a frictional energy consumption self-resetting fully assembled node" (announcement number: CN 208455820 U). The defect of this patent scheme is that the bolts slide The slot holes are not specially designed. Under strong earthquakes, the bolts connecting beams and columns will collide violently with the slot holes. This collision will amplify some seismic responses of the structure, even under the frictional energy dissipation envisioned in the patent. The structure is damaged before it is fully functional

[0005] On February 15, 2019, the State Intellectual Property Office published an invention patent application for "a steel beam-concrete column self-resetting energy-dissipating node" (announcement number: CN 109339237 A). The defect of this technical solution is that when the beam-column node When a large relative movement occurs, the angle steel connecting the beam and column will undergo plastic deformation. Even if the steel strand makes the node self-reset to a certain extent, it still cannot recover the plastic deformation of the connecting angle steel, so that the joint will actually reset itself under large deformation. Ability is greatly reduced

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