A channel steel slotted inline variable section steel core anti-buckling energy-dissipating support member

Abstract

The invention discloses a box iron grooving type linear variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component and belongs to the technical field of buckling-prevention limiting and energy-consumption supporting components. Connection segments, cross section local enlarging sections and a buckling working section are sequentially arranged from the two ends of a linear steel core to the middle of the linear steel core. The buckling working section is located between the two cross section local enlarging sections, and the cross section local enlarging sections are close to the two ends of an outer constraint steel pipe respectively and extend out of the constraint steel pipe through limiting grooves. According to the outer constraint steel pipe, a square cross section is formed by welding box iron of two grooves in a butted mode, and positions, corresponding to the cross section local enlarging sections of the linear steel core, are provided with limiting grooves. The length of the limiting grooves is slightly larger than the length of the cross section local enlarging sections, and the two ends of the cross section local enlarging sections locally enlarge the cross section with the slope angles of 60 degrees till the cross section penetrates out of the limiting grooves, the steel core can be well connected with the outer constraint steel pipe after being pulled, pressed and buckled, the axial rigidity of the outer constraint steel pipe is used for achieving the limiting function. The limiting and energy-consumption supporting component can be widely applied to energy dissipation, seismic reduction and limiting control of buildings.

Description

technical field [0001] The invention belongs to the technical field of anti-buckling energy-dissipating support members, and relates to a new type of anti-seismic energy-dissipating and position-limiting support member for engineering structures, in particular to a built-in steel core with a variable cross-section inline shape and an outer restraint steel pipe with slots Anti-buckling energy-dissipating support member of butt-welded channel steel. In the early stage of loading, the inline-shaped variable-section steel core consumes energy and yields. When the deformation reaches the restraint point of the limit groove, the external restraint steel pipe and the yielded steel core provide axial stiffness together to constrain the overall deformation of the structure and realize the function of limiting displacement. Background technique [0002] Buckling-restrained brace is also called buckling-restrained brace or BRB (Bucklingrestrained brace). The product technology was firs...

AI Technical Summary

Problems solved by technology

The current research and development of anti-buckling braces mainly focuses on improving their energy dissipation capacity, and there are few studies on the limiting effect of buckling-resistant braces

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