Buckling restrained brace with energy dissipation device sandwiched with lead layer and provided with steel plates at two ends and method for manufacturing buckling restrained brace

Abstract

The invention relates to a buckling restrained brace with an energy dissipation device sandwiched with a lead layer and provided with steel plates at two ends and a method for manufacturing the buckling restrained brace. An inner steel plate is connected with an outer-layer steel tube steel plate by the energy dissipation device sandwiched with the lead layer and provided with the parallel flexible steel plates, restraining filling materials are filled in a space between a buckling restrained section of the inner steel plate and an outer-layer steel tube before the outer-layer steel tube is sealed, then the outer-layer steel tube is sealed, and accordingly the buckling restrained brace with the energy dissipation device sandwiched with the lead layer and provided with the steel plates at the two ends is formed. The shortcoming that an outer-layer buckling restrained steel plate of an existing buckling restrained brace cannot be sufficiently utilized is overcome, and the problem of early yielding of an exposed portion of an inner core is avoided. Furthermore, the inner steel plate is connected with the outer-layer steel tube by the energy dissipation device sandwiched with the lead layer and provided with the parallel flexible steel plates, axial force is partially transmitted to the outer-layer steel tube via the inner steel plate and the energy dissipation device sandwiched with the lead layer and provided with the parallel flexible steel plates, and the rigidity and the energy dissipation capacity of the integral buckling restrained brace are improved. In addition, the energy dissipation capacity of the buckling restrained brace is improved by 20% to 50% as compared with a traditional buckling restrained brace.

Description

technical field [0001] The invention relates to a restrained buckling support with an energy dissipation device, in particular to a restrained buckling support with a lead layer energy dissipation device between parallel soft steel plates at both ends and a manufacturing method thereof. Background technique [0002] The restrained buckling brace is considered to be a new type of lateral-force-resistant bracing member with dual functions of ordinary brace and metal damper. The inner core is mild steel with low strength and rigidity. It is generally made of pure iron or low-carbon steel with low yield point. Its function is to bear the axial load. The outer restraint part does not participate in resisting axial load, but only protects core and prevent it from buckling. The role of restrained buckling braces in buildings is reflected in the fact that when the load due to earthquakes is not large, the restrained buckling braces are equivalent to diagonal braces located in the b...

AI Technical Summary

Problems solved by technology

In addition, the outer restraint mechanism only plays a role in preventing buckling of the inner core, and its material properties cannot be fully exerted, and the connecting part of the inner core exposed to the outer restraint memb

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