Stiffness-damage-collapse controllable type single frame and frame structure

Abstract

The invention discloses a stiffness-damage-collapse controllable type single frame and a frame structure. The single frame comprises a foundation, two anti-bending frames, a hinge supporting steel frame, at least one buckling restrained brace and two sets of limiting parts. The hinge supporting steel frame is arranged between the two anti-bending frames, and first steel frame beams and second steel frame beams are correspondingly hinged to connection beams of the anti-bending frames. One end of the buckling restrained brace is hinged to one on the lowest side of the multiple first steel framebeams or the multiple second steel frame beams, and the other end of the buckling restrained brace is hinged to the foundation. Each set of limiting parts comprises at least one limiting part, one endof each limiting part is connected with the foundation, the other end of each limiting part is provided with a limiting block, and the limiting blocks and the corresponding first steel frame beams orthe second steel frame beams are arranged alternately so as to limit the movement of the corresponding first steel frame beams or the second steel frame beams relative to the corresponding limiting parts. The single frame maintains the advantage of being flexible in frame space, and meanwhile has the excellent anti-seismic property and post earthquake repair property.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a stiffness-damage-collapse controllable single frame and frame structure. Background technique [0002] Earthquake is one of the major natural disasters in human history, which has brought huge casualties and economic losses to human society. The huge energy generated by the earthquake will cause a large lateral displacement response of the structure on the ground, resulting in local damage or overall collapse of the structure, which has become the most important factor in earthquake disasters. How to reduce the local damage to buildings caused by earthquakes, prevent the collapse of buildings under earthquakes, and protect human life and property safety has become one of the main goals of seismic research on engineering structures. [0003] Damage controllable seismic structure refers to the structural damage will not develop excessively under the action of earthquakes and oth...

AI Technical Summary

Problems solved by technology

However, the horizontal displacement of the traditional frame structure is large under the action of horizontal loads such as earthquakes, and it is easy to produce a large interstory displacement angle mutation in a certain layer of the structure, and it is easy to form a weak layer at the mutation point of the interstory displacement angle. Nodes are easy to damage and difficult to repair after damage

Therefore, large horizontal displacements and weak floors will lead to interstory collapse of the overall structure and cause greater safety hazards. At the same time, severe scattered damage in traditional frames will lead to high post-earthquake repair costs.

[0005] In related technologies, the buckling-constrained braces are applied to the traditional frame structure system, but the buckling-constrained braces still cannot guarantee the uniform distribution of the interstory displacement angle of the structure, and the number of buckling-constrained braces is large, and there are many design parameters. The seismic performance of the steel frame structure system is greatly affected, which makes the design workload larger and the economy is poor. At the same time, the arrangement of buckling restraint supports in the building may affect the use of the building.

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