An anti-buckling support member with enhanced post-yielding stiffness

Abstract

The invention discloses an anti-buckling limit support member for reinforcing a post-yield stiffness, which belongs to the technical field of building construction. The anti-buckling limit support member comprises a two-order yield steel core and an outer constraint steel tube, wherein the two-order yield steel core comprises a first-level yield steel core and a vertically-covering steel plate; the first-level yield steel sequentially comprises a connection section L1, transition sections L2 and a yield working section L3 from the both ends to the middle, the connection section L1 and the transition sections L2 are cross sections, the yield working section L3 is an inline section, and the yield working section L3 is located between the two transition sections L2; bolts are arranged on connection sections at the both sides of the first-level yield steel core; the lengths of the first-level yield steel core and the vertically-covering steel plate are L4, the steel plate is connected to the upper surface and the lower surface of the first-level yield steel core by the bolts at the both ends, grooves are opened in thee both ends of the steel plate, the cross sections of the first-level yield steel core stretch into the grooves, and the two-order yield steel core is located in the outer constraint steel tube. The anti-buckling limit support member disclosed by the invention is convenient to take materials, definite in force transfer, and capable of being widely applied to energy dissipation and seismic mitigation, and limit control for buildings.

Description

technical field [0001] The invention belongs to the technical field of anti-buckling energy-dissipating support components, and relates to a support component for anti-seismic energy consumption and position limiting of engineering structures, in particular to an anti-buckling limiter with a built-in double-yield point steel core that strengthens post-yield stiffness support member. Yield at the first stage of loading The steel core consumes energy and yields in the working section. When the deformation increases and the bolts are constrained by the holes on the steel core's outer covering steel plate, the steel plate and the steel core after yielding together provide axial stiffness, which increases the stiffness in the later stage of support and consumes energy. The ability is enhanced to effectively limit the overall lateral movement of the structure. Background technique [0002] In order to prevent the local and overall instability of the steel support under compressio...

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Problems solved by technology

[0005] Based on the existing anti-buckling support, the present invention proposes an anti-buckling limit support that strengthens the stiffness after yielding in view of the fact that the steel core of the existing anti-buckling support has only one level of yield capacity and cannot cope with the demand for large energy consumption under the action of a large earthquake member

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