A channel steel slotted cross-shaped cross-section steel core anti-buckling energy-dissipating support member

Abstract

The invention discloses a box iron grooving type cross-shaped 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 a, cross section local enlarging sections b and a buckling working section c are sequentially arranged from the two ends of a steel core to the middle of the steel core. The cross section local enlarging sections b are close to the two ends of an outer constraint steel pipe respectively, and the outer constraint steel pipe is formed by butt welding box iron of two opened grooves. Four wing positions, corresponding to the cross section local enlarging sections b of the cross-shaped steel core, of the outer constraint pipe are provided with limiting grooves. The length of the limiting grooves is slightly larger than the length of the cross section local enlarging sections b, and four wings of the cross section local enlarging sections b extend out of the outer constraint steel pipe through the limiting grooves, the cross section of the cross-shaped steel core is locally enlarged at the limiting grooves with the slope angle of 60 degrees till the cross section penetrates out of the limiting grooves of the outer constraint steel pipe. When deformation of the steel core reaches the limitation of the limiting grooves after the steel core is buckled and deformed, axial rigidity is commonly provided by the buckled steel core and the outer steel pipe, the limiting structure laterally moves integrally, and the axial rigidity of the outer constraint steel pipe is fully utilized.

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 of an engineering structure, especially a cross-shaped internal steel core with variable cross-section and slotted outer restraint steel pipes Buckling-resistant energy-dissipating support members of butt-welded channel steel. When the variable cross-section steel core (1) yields due to energy consumption in the early stage of loading, when the deformation reaches the restraint point of the limit groove (4), the outer constrained steel pipe (2) and the yielded steel core (1) jointly provide axial stiffness, constraining the structure The overall deformation realizes the function of limiting displacement. Background technique [0002] Buckling-restrained brace is also called buckling-restrained brace or BRB (Bucklingrestrained brace). The product technology wa...

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

Images