Assembly type buckling-restrained brace with replaceable inner core

Abstract

The invention discloses an assembly type buckling-restrained brace with a replaceable inner core. The assembly type buckling-restrained brace comprises an inner restraining piece, two energy-consuminginner core plates, an outer restraining piece and two end connecting pieces, wherein the two energy-consuming inner core plates are symmetrically and detachably connected to the front side and the rear side of the inner restraining piece; the outer restraining piece is arranged on the peripheral sides of the inner restraining piece and the energy-consuming inner core plates in a sleeving mode, and the outer restraining piece is detachably connected with the energy-consuming inner core plates; and the two end connecting pieces are detachably connected to the two ends of the outer restraining piece correspondingly. A gusset plate of a main body structure is connected with the end connecting pieces instead of being directly connected with the energy-consuming inner core plates, so that the energy-consuming inner core plates which are damaged after an earthquake are convenient to disassemble and replace; and the inner restraining piece, the energy-consuming inner core plates, the outer restraining piece and the end connecting pieces are detachably connected, so that the inner restraining piece and the outer restraining piece are convenient to disassemble after the earthquake to complete damage detection of the energy-consuming core plates, on-site assembly can be achieved, the production period is short, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of building structure energy-dissipating supports, and more specifically relates to an assembled anti-buckling support with a replaceable inner core. Background technique [0002] The anti-buckling brace is a new type of brace that has the dual functions of ordinary braces and metal dampers. It can not only provide lateral stiffness and strength for the main structure under small earthquakes, but also use its own plastic deformation to consume Earthquake energy can reduce or even avoid structural damage, so it has been widely used in engineering. And with the increase in the application of buckling-resistant braces and the progress of related research, various high-performance buckling-resistant braces continue to appear. However, the buckling-resistant braces that are currently widely used still have the following problems: [0003] 1. Serious waste caused by overall replacement: For a buckling-resistant b...

AI Technical Summary

Problems solved by technology

[0003] 1. Serious waste caused by overall replacement: For a buckling-resistant brace with reasonable design, only the energy-dissipating element will be damaged or broken after the earthquake, and the rest of the elements should remain elastic. However, in actual engineering, due to structural reasons, only the traditional It is undoubtedly a huge waste to replace the anti-buckling support as a whole, and it does not conform to the current design concept of green buildings

[0004] 2. Difficulty in removing and replacing components: Under the action of an earthquake, the energy-consuming components of the anti-buckling support will inevitably produce irreversible plastic deformation or fracture, and then need to be inspected or even removed and replaced

However, for traditional anti-buckling braces, it is difficult to complete the damage detection of energy-dissipating elements without damaging the restraint elements; and there are many difficulties when removing and replacing energy-dissipating elements, for example, buckling-resistant braces and gusset plates If welded connections are used, the replacement of energy-dissipating elements will inevitably have adverse effects on the joints; even if the braces and gusset plates are connected by bolts or pins, the joint section of the buckling-resistant braces may still be unstable under large earthquakes, that is, the end of the braces may be relatively unstable. Large bending deformation, which makes it difficult to remove and replace the support

[0005] 3. The production and processing cycle is long, and the quality is not easy to guarantee: the traditional buckling-resistant steel tube concrete brace needs to be cured for at least 7 days after the completion of concrete pouring before subsequent installation, and it is easy to damage the non-adhesive components pasted outside the energy-dissipating elements during pouring. The junction material causes damage, that is, the gap between the constrained unit and the energy dissipating element is difficult to guarantee

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