Friction plastic hinge structure capable of controlling energy dissipation

Abstract

The invention relates to a friction plastic hinge structure capable of controlling energy consumption. The friction plastic hinge structure capable of controlling the energy consumption comprises a rotating unit and a basic support unit. The rotating unit is composed of a profiled bar beam (1-2), a rotating pin (2), a circular-arc-shaped loading plate (3), a tightening ring loading screw (4), tightening ring nuts (5) and a rotating single connecting plate (12), wherein the profiled bar beam (1-2) is connected with the rotating single connecting p0late (12), upper and lower plates of the circular-arc-shaped loading plate (3) are connected with the rotating single connecting plate (12) through the rotating pin (2), and the tightening ring loading screw (4) is connected with the circular-arc-shaped loading plate (3) in a bolted mode through the tightening ring nuts (5). The basic support unit is composed of a profiled bar beam (1-1), friction materials (6), a double connecting plate (8) and a circular-pipe-shaped sealing plate (9), wherein the profiled bar beam (1-1) is connected with the circular-pipe-shaped sealing plate (9), the double connecting plate (8) is connected with the inner wall of the circular-pipe-shaped sealing plate (9), and the friction materials (6) are attached to the outer wall of the circular-pipe-shaped sealing plate (9).

Description

technical field [0001] The invention relates to a plastic hinge in a steel structure beam of structural engineering, in particular to a frictional plastic hinge construction technology with controllable energy consumption. Background technique [0002] In structural analysis, plastic hinge means that under load, when the bending moment at several sections in the structure reaches the plastic limit bending moment, the section will rotate to a certain extent, similar to the effect of "hinge", resulting in the redistribution of internal forces in the structure. Under earthquake action, steel structure buildings often form plastic hinges at the beam-column joints to dissipate most of the energy input into the structure. An unstoppable target. This requires the structure to have a feasible energy dissipation mechanism, including establishing the ideal sequence of plastic hinges, and giving appropriate strength to each component to ensure that the plastic hinges of the structure ...

AI Technical Summary

Problems solved by technology

[0004] Although the domestic construction methods of plastic hinges in steel structures can effectively realize the outward movement of plastic hinges and achieve the purpose of protecting beam-column joints, there are still the following defects: (1) Plastic hinges are very likely to be completely destroyed, and the energy consumption of the structure is equivalent to that of earthquakes. (2) It is difficult to achieve precise control of structural energy consumption, and can only roughly control the location of plastic hinges; (3) The formation mechanism of plastic hinges largely depends on the properties of steel and the structural details of joints , and some construction methods are more difficult to implement

Images