Double t-core visually inspects buckling-restrained braces

Abstract

The invention discloses a double-T-core buckling-restrained brace capable of being visually inspected. The double-T-core buckling-restrained brace capable of being visually inspected comprises two T-shaped inner core plates, two sets of end stiffening plates, two end connecting plates, a plurality of connecting positioning plates and a periphery restraining component. The two T-shaped inner core plates have a T-shaped section and are placed in the thickness direction of a flange plate in parallel, and webs of the T-shaped inner core plates are placed inwards. The end stiffening plates are rectangular plates, are located between the two T-shaped inner core plates, and are placed at the ends of the T-shaped inner core plates in parallel. Two opposite edges of each stiffening plate are fixedly connected with the T-shaped inner core plates, and the other edges of the end stiffening plates and the end edges of the T-shaped inner core plates are located in the same plane. The end connecting plates are fixedly connected with the end edges of the two T-shaped inner core plates and one edges of the end stiffening plates. The connecting positioning plates are also rectangular plates and are placed between the T-shaped inner core plates in parallel, two opposite edges of each connecting positioning plate are fixedly connected with the edges of the webs of the T-shaped inner core plates in an abutting mode, and all the connecting positioning plates are located in the same plane and distributed at equal intervals.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a buckling constraint support for reducing the seismic response of engineering structures. Background technique [0002] Before the 1990s, the traditional anti-seismic method used to dissipate the seismic energy through the local yield of the main structure, such as the beam-hinge mechanism. Facilitate the post-earthquake repair of structures. Since the Hanshin Earthquake in Japan and the Northridge Earthquake in the United States, buckling-restrained braces, as an energy-dissipating and shock-absorbing member with superior performance, have been rapidly popularized and applied in Japan, the United States and other earthquake-prone developed countries, and their research in my country is also developing. stage. The buckling-constrained support wraps the constrained components outside the core components to limit the bending deformation of the core components. The seismic energy is ...

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Problems solved by technology

[0002] Before the 1990s, the traditional anti-seismic method used to dissipate the seismic energy through the local yield of the main structure, such as the beam-hinge mechanism. Conducive to post-earthquake repair of structures

The buckling restraint support of the all-steel peripheral restraint section is adopted, such as the public patent CN101974947B or CN101718123B, the core member of which is a steel member such as I-shaped steel, and the flange and web of the I-shaped section are restrained by the peripheral all-steel restraint member at the same time. The connection welds or chamfers between the flange and the web of the profiled section conflict with the peripheral constraining members, making it more difficult to fabricate buckling constrained supports

Moreover, the outer constrained steel members are closely attached to the inner core members, resulting in a reduction in the overall stiffness of the constrained members, reducing the efficiency of the steel used in the constrained members

[0004] In addition, if the restraining members of the buckling-restrained braces are close to the inner core members, the restraint members can only be disassembled for visual inspection of the buckling-restrained braces after the earthquake, and the damage of the buckling-restrained braces cannot be quickly observed, which affects the buckling-restrained braces. Earthquake Repair

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