Rotational friction energy dissipation-SMA coupling pseudo-classic building self-resetting steel joint and method

Abstract

The invention discloses a rotational friction energy dissipation-SMA coupling pseudo-classic building self-resetting steel joint and method. The building friction energy dissipation-SMA coupling pseudo-classic building self-resetting steel joint comprises a beam column joint consisting of a circular steel pipe lower column, a square steel pipe upper column and a rectangular section steel beam, and a cornice component is arranged between the joint of the circular steel pipe lower column and the square steel pipe upper column and the rectangular section steel beam; the cornice component comprises a lower cornice component, a cornice component and an upper cornice component, a rotational friction energy dissipater is arranged in the cornice component, the rotational friction energy dissipater is connected with the rectangular section steel beam by being hinged to an upper support in the upper cornice component, and the circular steel tube lower column and the square steel tube upper column node are connected through a shape memory alloy connecting piece in the lower cornice component. According to the joint, energy is consumed through friction plates under the earthquake effect, the damage self-repairing capacity is improved through a shape memory alloy connecting rod, therefore, damage to a steel structure pseudo-classic building body is reduced, the anti-seismic performance of a pseudo-classic building steel structure system can be improved, and the attractiveness of the pseudo-classic building steel structure system is kept.

Description

technical field [0001] The invention belongs to the field of antique architectural steel structure systems, and relates to an antique architectural self-resetting steel node and a self-resetting method based on rotational friction energy consumption-SMA coupling. Background technique [0002] In the long history of ancient buildings, due to the shortcomings of the construction materials (wood), such as warping, cracking, flammability, and decay, there are fewer and fewer ancient buildings that have survived until today, or there are various damage problems . The steel structure antique building is designed based on the prototype of the wooden structure ancient building, and is constructed by using modern construction techniques and steel materials to imitate the shape and structure of the wooden structure ancient building. It not only maintains the classical beauty of ancient Chinese architecture, but also has the advantages of light steel structure, good seismic performanc...

AI Technical Summary

Problems solved by technology

In addition, the traditional design method of beam-column joints leads to certain damage and deformation of the structural system after a strong earthquake, and even makes the structure difficult to repair and cannot continue to be used normally

[0004] Existing research mainly resists earthquake action by enhancing the seismic performance of the structure body. Purely relying on the structure body to resist external earthquake action will cause irreversible permanent plastic damage inside the structure, which is too expensive

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