Anti-buckling limit support member for reinforcing post-yield 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 limit energy dissipation support members, and relates to a new type of engineering structure anti-seismic energy consumption and limit support member, in particular to a built-in double-yield-point steel core to strengthen the post-yield stiffness of anti-buckling limit Position support member. The steel core in the first-stage yielding section yields energy consumption in the early stage of load, and when the deformation increases and the bolt is constrained by the holes in the steel core overlying steel plate, the steel plate and the steel core after yielding provide axial stiffness, which increases the stiffness of the support and consumes energy. The ability is enhanced to effectively limit the overall side shift of the structure. Background technique [0002] In order to prevent local and overall instability of steel supports under compression and enhance low-cycle fatigue performance, some...

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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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