Four-steel-tube externally-attached decoration plate type cross-shaped variable-cross-section steel core energy dissipation limiting anti-buckling supporting member

Abstract

The invention relates to a four-steel-tube externally-attached decoration plate type cross-shaped variable-cross-section steel core energy dissipation limiting anti-buckling supporting member, and belongs to the field of anti-buckling energy dissipation limiting supporting members. An outer limiting body is mainly formed by four square light-gauge steel section concrete filled steel tubes forming a shape shaped like a Chinese character 'tian', and the outer sides of the four square light-gauge steel section concrete filled steel tubes are limited by partially welding decoration plates; the welding decoration plates are not arranged on the short edge, corresponding to a cross section largened section b, of the outer limiting body, and the welding decoration plates are welded to the other edges. A steel core is located in a gap of a cross-shaped structure in the middles of the four square light-gauge steel section concrete filled steel tubes, the steel core comprises a buckling working section a, the cross section partial largened section b and a connecting section c, the position, where the decoration plates are not welded to an outer steel tube, of the cross section of the steel core is partially expanded with a 60-degree slope angle, the buckled steel core is in good connection with the outer limiting body, sliding dropping is prevented, and the limiting function is achieved through the axial stiffness of the outer limiting body. After the steel core is buckled, the axial stiffness of the outer limiting body serves as the auxiliary stiffness of a supporting system, and therefore the lateral displacement of the structure is easily limited.

Description

technical field [0001] The invention belongs to the anti-buckling energy-dissipating supporting member, and relates to an anti-seismic energy-dissipating and position-limiting supporting member of an engineering structure, especially a cross-shaped steel core with variable cross-section, and four steel pipes attached to the outside of the constraining body. Buckling-resistant energy-dissipating support members. In the early stage of loading, the cross-shaped steel core yields due to energy consumption. When the deformation reaches a certain level and is limited by the external patch plate, the external restraint body participates in the force, providing axial stiffness to limit the overall displacement of the structure, and achieving the effect of energy consumption first and then limit. Background technique [0002] Buckling-resistant bracing (BRB) is a type of bracing with dual functions of ordinary bracing and metal damper. The gap is used to release the expansion deform...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a four-steel pipe externally pasted with a patchwork cross-section steel core energy dissipation limit anti-buckling support member to solve the problem that the existing anti-buckling support has no displacement control device

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