A buckling-constrained braced damper with symmetrical initial imperfections

Abstract

The invention discloses a buckling constraint support type damper with symmetrical initial imperfection. The buckling constraint support type damper is characterized in that the buckling constraint support type damper comprises an end constraint segment and a buckling segment; and the two ends are connected with beams or column components or nodes to form a whole through bolt connection so as to achieve the purpose of improving of the resistant-lateral rigidity of components. The buckling constraint support type damper with the symmetrical initial imperfection is adopted, and due to a small tension-compression unbalanced coefficient, components such as beam columns or beam column nodes can be protected well under the action of an earthquake; and meanwhile, under the action of a medium earthquake, earthquake energy is dissipated and absorbed, and replacement can also be convenient after damage. Compared with traditional buckling constraint support type dampers, according to a manufacturing technology of the buckling constraint support type damper with the symmetrical initial imperfection, the processes of adding a sleeve outside a core energy dissipation component, grouting and the like in the traditional manufacturing process are avoided in the manufacturing technology, so that manufacturing is convenient. The buckling constraint support type damper can be prefabricated and formed in a factory, the quality of the components is ensured, the workload of site operation is reduced, and energy conservation and environment protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of building structures, in particular to a buckling-constrained support type damper with symmetrical initial defects, which is suitable for steel structures or concrete structures with buckling-constrained supports. Background technique [0002] During the use of steel structures or reinforced concrete structures, ordinary supports will buckle under compression. When the supports buckle under compression, the stiffness and bearing capacity will decrease sharply. Under the action of earthquake or wind, the internal force of the support changes back and forth under the two states of compression and tension. When the support gradually changes from the buckling state to the tension state, the internal force and stiffness of the support are close to zero. Therefore, the hysteretic performance of ordinary supports is poor under repeated loads. In order to solve the problem of buckling under compression and poor ...

AI Technical Summary

Problems solved by technology

However, traditional buckling-restrained bracing usually adopts peripheral constraints composed of steel and concrete, which lead to high manufacturing precision, self-heavy weight and difficult construction, and there is a large additional load on the core unit itself, which greatly limits its promotion and use.

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