Energy dissipation type buckling constraint support with symmetrical initial imperfection unit at end

Abstract

The invention discloses an energy dissipation type buckling constraint support with a symmetrical initial imperfection unit at the end. The energy dissipation type buckling constraint support is characterized in that the support is composed of an end constraint segment, an energy dissipation segment and a support straight 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 energy dissipation type buckling constraint support with the symmetrical initial imperfection unit at the end is adopted, and thus under the action of a small earthquake, the buckling constraint support keeps elasticity; and under the action of a medium earthquake or a severe earthquake, the buckling constraint support enters a yield stage, and the effect of a damper can further be achieved through the good hysteretic energy dissipation performance of the buckling constraint support. Compared with traditional buckling constraint supports, according to a manufacturing technology of the energy dissipation type buckling constraint support, 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 energy dissipation type buckling constraint support 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 an energy-dissipating buckling-constrained support with symmetrical initial defect units at the end, 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 und...

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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