Dual-core visual inspection of buckling-restrained braces

Abstract

The invention discloses a dual-core visual inspection buckling restraint support, which comprises two energy-dissipating inner core plates, two sets of end stiffening plates, two end connecting plates, multiple sets of connecting positioning plates and peripheral restraining components; The energy-dissipating inner core plate is placed parallel to the plate thickness direction, and the end stiffening plate is a rectangular plate. The two opposite sides of each set of end stiffening plates are vertically fixed to the energy-dissipating inner core plate placed in parallel, and the other side of the end stiffening plate is connected to the The end edges of the energy-dissipating inner core plates are located in the same plane; the end connecting plate is fixedly connected to the end edges of the two energy-dissipating inner core plates and one side of the end stiffening plate; the connecting positioning plate is also a rectangular plate, placed in parallel Inside the energy-dissipating inner core plate, its two opposite sides are vertically fixed to the energy-dissipating inner core plate, and all connection 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. Post-earthquake repair and replacement

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