A buckling-resistant support based on yoshimura pattern crease circular tube core material

Abstract

The invention relates to a buckling prevention support based on a tubular core material with Yoshimura pattern creases. The buckling prevention support is characterized by comprising a thin-wall rigid constrain casing pipe, the tubular inner core material with the Yoshimura pattern creases, circular limiting plates and framework node plates; the two ends of the tubular inner core material with the Yoshimura pattern creases are fixedly connected with the circular limiting plates; each framework node plate is fixedly connected with the other side of the corresponding circular limiting plate; and the tubular inner core material with the Yoshimura pattern creases and the circular limiting plates are fixedly connected inside the thin-wall rigid constrain casing pipe integrally. According to the support, under the effect of bearing vibration, an inner core material circular tube can be controlled to buckle and cooperative operation at various stages can be ensured under the constraint of the circular limiting plates and the thin-wall rigid constrain casing pipe according to the preset initial defects of the Yoshimura pattern crease lines, the material properties of all components are brought into full play, and hysteretic energy dissipation performance is improved. The buckling prevention support is light in structure, simple in mode, flexible in design and wide in application range and has good market prospects.

Description

technical field [0001] The invention belongs to the related technical field of building structure engineering, and relates to a buckling-resistant support based on a Yoshimura pattern crease circular tube core material. Background technique [0002] The frame-bracing system is a traditional seismic structure system with good ductility. The steel support works together with the frame through the coordinated deformation of the floor to improve the lateral stiffness and bearing capacity of the structure. The steel support can increase the damping of the structural system by transforming it into an energy-dissipating support to reduce the seismic response of the structure. [0003] The anti-buckling brace is an energy-dissipating support member widely used in current structures. Its basic principle is that under the restraint of the external restraint casing, the inner core member first reaches the full cross-section yield when it is under compression, and then dissipates it th...

AI Technical Summary

Problems solved by technology

[0005] (1) The buckling performance of the core material components is not good

The cross-sectional shape of the common core material components limits its buckling performance. Even if the full-section yield is affected by uncontrollable factors such as the initial defects of the core material components, it shows randomness. Insufficient yield of core material components affects the hysteretic energy dissipation performance

[0006] (2) Problems caused by filling materials

Firstly, it increases the self-weight of the entire anti-buckling support; secondly, it limits the yield performance of the inner core member; finally, under the reciprocating action of the earthquake, it is easy to be crushed and loses the restraint effect to reduce the energy dissipation performance

[0007] (3) The rigidity of ordinary steel support is not high

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