Double buckling-restrained steel brace for continuous restraint on yield thin wall surface

Abstract

The invention specifically discloses a double buckling-restrained steel brace for continuous restraint on yield thin wall surface, which solves the problems of inferior reliability and durability and difficult engineering connection and installation of full-steel buckling restrained brace under the action of strong vibration; a core axial force steel comprises a yield segment, a transition segment and a connection segment, wherein the yield segment and the transition segment are sleeved with sealed outer layer restrained steel sleeves, the yield segment is a thin-wall steel slat with the rectangular cross section, the connection segment comprises two parallel connecting steel plates, the yield segment is circumferentially provided with a continuous restraint part comprising two restraint steels, and both the two restraint steels are continuously provided, in the axial direction of the yield segment, with thin-wall steel limbs which are close to the thin wall surface and parallel to the thin wall surface of the yield segment. Such a brace performs continuous restraint on the thin wall surface of the yield segment and is provided with the sealed outer layer restrained steel sleeves, thereby enhancing performance stability, reliability and durability thereof under the dynamic action of strong vibration, in addition, the brace according to the invention has easy manufacturing and convenient installation and is used for earthquake-against fortification and reinforcement, especially for the seismic disaster prevention of important projects in high-earthquake-intensity regions.

Description

technical field [0001] The invention relates to the field of anti-seismic and disaster prevention of structural engineering, in particular to a buckling-constrained support in an energy-dissipating and shock-absorbing structure, in particular to a double anti-buckling steel support that is continuously constrained by yielding thin-walled surfaces. Background technique [0002] The frame with supports can effectively reduce the lateral deformation of the structure and improve the seismic and collapse resistance of the structure. Although steel braces are easy to yield under tension and effectively dissipate energy, traditional steel braces will undergo elastic buckling under compression, and the compression bearing capacity degrades rapidly, making it impossible to utilize its elastoplastic energy dissipation capacity. In order to overcome this shortcoming, researchers at home and abroad have developed a type of axially stressed members that are not easy to buckle, called buc...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of unstable energy dissipation performance, poor working reliability and durability, and difficulty in connection and installation of engineering construction under the action of strong vibration force when the all-steel buckling restraint support adopts thin-walled steel slats with rectangular cross-sections, the present invention provides a power consumption Excellent performance, anti-buckling and reliable durability, convenient construction and connection, double anti-buckling steel support with continuous restraint of yielding thin-walled surface

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