Restricted buckling restrained brace with parallel energy-dissipation mild steel plate and manufacturing method thereof

Abstract

The invention relates to a buckling restrained brace with an energy-dissipation device, in particular to a restricted buckling restrained brace with a parallel energy-dissipation mild steel plate and a manufacturing method thereof. In the invention, each steel plate in the beam of the parallel energy-dissipation steel plates is welded on an inner steel plate at equal interval; the steel plate of an outer layer of steel pipes is welded on the parallel energy-dissipation steel plate; all the clearances are filled with foaming agent before the outer steel pipes are sealed so as to prevent the corrosion of the inner structure of the steel pipes; and finally the outer layer of steel pipes is sealed to form the restricted buckling restrained brace with the energy-dissipation mild steel plate. In the invention, the energy-dissipation device is completely arranged inside the outer layer of the steel pipes, and the outer layer of the steel pipes and the inner steel plates are combined into a whole by the energy-dissipation device, thereby solving the problem that the exposed part of the inner core of the existing restricted buckling restrained brace is easy to buckling, overcoming the defects of poor rigidity of the inner core of the existing restricted buckling restrained brace and the poor rigidity and strength of the periphery restrained part, improving the work efficiency of the energy-dissipation device, and making full use of the buckling restrained brace.

Description

technical field [0001] The invention relates to an anti-buckling support with an energy-dissipating device, in particular to a parallel energy-dissipating mild steel plate constrained anti-buckling support and a manufacturing method thereof. Background technique [0002] The anti-buckling brace is considered to be a new type of anti-lateral force brace that has the 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 anti-buckling braces in buildings is reflected in the fact that when the load due to earthquakes is not large, the anti-buckling braces are equivalent to diagonal braces located in the building frame, which can provide lateral stiffness for the structure; ...

AI Technical Summary

Problems solved by technology

[0003] However, there are still some different viewpoints on the mechanism of the existing buckling-resistant braces and some unavoidable problems: some Japanese scholars pointed out that buckling-resistant braces with insufficient inner core stiffness may cause overall instability

In addition, the connection between the inner core exposed to the outer restraint member and the structural member is prone to buckling

If there is no unified analysis theory and construction measures on such issues, it may be difficult to establish a reasonable and perfect buckling-resistant bracing design method

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