Double-rectangular tube restraining type assembled buckling-restrained brace with H-shaped cross section

Abstract

The invention relates to a double-rectangular tube restraining type assembled buckling-restrained brace with an H-shaped cross section, belonging to the technical field of structural engineering. The brace of the invention is characterized by being formed by assembling two cold-bending thin-walled section steel rectangular tubes and hot-rolled H section steel through a long bolt connecting piece, wherein the two cold-bending thin-walled section steel rectangular tubes are buckled and pressed on the web plate of the hot-rolled H section steel through the long bolt connecting piece to form a peripheral restraining member, and a restraining mechanism for the hot-rolled H section steel of an inner core is formed; the hot-rolled H section steel is provided with circular holes in any position in which the long bolt connecting piece passes through; and the two cold-bending thin-walled section steel rectangular tubes are provided with elliptical holes in the non-midspan positions in which the long bolt connecting piece passes through, and are provided with circular holes in the midspan position. The hot-rolled H section steel can be applied to the structure needing larger brace bearing capacity, and the cross section of the hot-rolled H section steel can achieve the total cross section buckling under the action of large oscillation, thereby effectively consuming the energy. In addition, the invention has the advantages of convenient construction, low manufacturing cost and simple manufacturing processes and can realize industrial mass production.

Description

technical field [0001] The invention relates to a novel anti-buckling energy dissipation support, which belongs to the technical field of structural engineering. technical background [0002] The anti-lateral force design of multi-high-rise building structures is the core content of the entire structural design, so designers are constantly exploring and seeking new support systems and structures. Practice has proved that buckling-resistant energy-dissipating bracing, as a supporting member of a multi-story frame structure, not only has two functions of "support" and "energy dissipation", but also can effectively reduce the seismic action of the structure. Good energy-dissipating and shock-absorbing components. Under the action of small earthquakes, the anti-buckling energy-dissipating braces maintain elasticity, thereby providing sufficient rigidity for the main structure to ensure that the lateral movement of the main frame meets the design requirements; under the action o...

AI Technical Summary

Problems solved by technology

However, for this kind of anti-buckling energy-dissipating support composed of four hot-rolled groove sections, since the inner core pressure-bearing member adopts a straight steel plate, the load it bears is limited, and it is only suitable for those with low requirements on the bearing capacity of the support. structure

And because the two trough members arranged on the outside of the inner core plate open outwards, their moments of inertia around the vertical axis are small, so the confinement efficiency cannot be fully utilized

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