Combined buckling-restrained brace with multi-yielding segments and multi-wave core elements

Abstract

The invention discloses a combined buckling-restrained support with multiple yielding sections and multiwave core units and belongs to the field of building structure techniques and earthquake resistance and shock absorption of structures. A structural system comprises a straight plate core unit, small wave bend plate core units, large wave bend plate core units, stiffening ribs, limiting clips, cross steel tubes, cement-emulsified asphalt mortar, square end plates, hinge joints, node plates, anchor plates and the like. A supporting core unit comprises a straight plate core unit, two small wave bend plate core units and two large wave bend plate core units. The cross steel tube serves as a restraining unit. The cement-emulsified asphalt mortar fills the gaps between the restraining unit and the core units. The support is connected to the node plates on a main body structure through the hinge joints. Multi-yielding of the buckling-restrained support is achieved, so that the support hasrelatively good energy consumption performance in small medium and large earthquakes. The core units have good fatigue performance and are hardly broken. A novel filling material can provide a more stable restraining function to the core units.

Description

technical field [0001] The invention relates to a combined buckling constrained support with multiple yield sections and a multi-wave core unit, belonging to the field of new building structure technology and structure anti-seismic shock absorption. Background technique [0002] The traditional frame structure often has the defect of insufficient lateral stiffness. Therefore, the frame structure is often supplemented with oblique supports to improve its lateral resistance, thus forming a support-frame structure system. Compared with the frame structure, the brace-frame structure system has a higher anti-lateral bearing capacity, but the premise is that the brace does not buckle and lose stability when it is under compression, so the buckling-constrained brace came into being. The buckling-constrained bracing sets constraining units around the core unit to limit the buckling development of the core unit when the support is under compression, so as to ensure that it can fully ...

AI Technical Summary

Problems solved by technology

[0005] Mortar is usually filled between the traditional buckling-constrained bracing constraining unit and the core unit, because the mortar is relatively brittle, it is easily crushed by the core unit when the support is under compression

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