Space three-dimensional deformation shock absorber capable of achieving graded energy dissipation

Abstract

The invention discloses a space three-dimensional deformation shock absorber capable of achieving graded energy dissipation, and belongs to the field of civil engineering structure energy dissipationand shock absorption. The space three-dimensional deformation shock absorber comprises an outer steel frame, an arc-shaped steel ring, inner steel frames, an arc-shaped steel plate, viscoelastic layers and a steel plate layer. The space three-dimensional deformation shock absorber is characterized in that the viscoelastic layer between the outer steel frame and the inner steel frame can be shearedand deformed along the X direction; the viscoelastic layer between the two inner steel frames can be sheared and deformed in the Y direction and the Z direction; the arc-shaped steel ring is soft steel, the two ends of the arc-shaped steel ring are fixedly connected with the outer steel frame, and bending-torsion plastic deformation in the X direction can be achieved; the arc-shaped steel plate is soft steel, the two ends of the arc-shaped steel plate are fixedly connected with the inner steel frames, and bending plastic deformation in the Y and Z directions can be achieved; and before the soft steel reaches the yield displacement, the corresponding three-dimensional deformation component is viscoelastic energy consumption, and after the soft steel reaches the yield displacement, the softsteel and the viscoelasticity jointly consume energy; According to the space three-dimensional deformation shock absorber, grading energy consumption can be achieved on three spatial coordinate components, energy consumption is stable and sufficient, the structure is simple, manufacturing is easy, and installation is convenient and fast.

Description

technical field [0001] The invention relates to the technical field of energy dissipation and shock absorption of civil engineering structures, in particular to a spatial three-dimensional deformation shock absorber that can consume energy in stages. Background technique [0002] The dampers used in civil engineering structures currently developed are mainly based on one-dimensional axial deformation, and a small amount of dampers that can perform two-dimensional plane deformation and energy consumption have been developed, such as the viscoelastic multi-dimensional shock absorber with application number CN200810228847.X , the shear deformation energy consumption is performed through the plane where the viscoelasticity is located, and the out-of-plane direction is locked, so the deformation energy consumption in the three coordinate directions of space cannot be realized. At the same time, viscoelasticity is greatly affected by the ambient temperature, the shear deformation ...

AI Technical Summary

Problems solved by technology

[0002] The dampers used in civil engineering structures currently developed are mainly based on one-dimensional axial deformation, and a small amount of dampers that can perform two-dimensional plane deformation and energy consumption have been developed, such as the viscoelastic multi-dimensional shock absorber with application number CN200810228847.X , the shear deformation energy consumption is performed through the plane where the viscoelasticity is located, and the out-of-plane direction is locked, so the deformation energy consumption in the three coordinate directions of space cannot be realized

At the same time, viscoelasticity is greatly affected by the ambient temperature, the shear deformation capacity is limited, and the energy dissipation capacity under large displacement is insufficient

Therefore, it is not sufficient to use only viscoelastic dampers for energy dissipation

[0003] The patent with the application number 201621300648.1 provides graded energy consumption through two semicircular mild steels inside and outside. The inner semicircle yields first, and the outer semicircle yields later. Both are metal yield energy consumption. However, when the inner semicircle fails to yield under small displacement , still can't consume energy, that is, it can't reach the energy consumption of the full displacement range

At the same time, this damper is only used in the mid-span of the connecting beam or between the frame layers, without considering the

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