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 deformation energy consumption in the three coordinate directions of the space

[0004] The patent with the application number 201910539270.2 realizes energy dissipation through frictional energy dissipation components and metal ring components. It is mainly used in the mid-span of connecting beams. Since the direction of the vertical frictional energy dissipation plane is fixed by high-strength bolts, and the frictional energy dissipation components and frame components are Fixed by high-strength bolts, the damper cannot deform and dissipate energy in the direction perpendicular to the friction energy dissipation plane

[0005] The patent with the application number CN201610922958.5 is used in the coupling beam to realize the viscoelastic energy consumption of small displacement and the soft steel plastic energy dissipation of large displacement in the shear direction of the coupling beam, but the energy dissipation device of the coupling beam in this patent is only The O-shaped mild steel energy dissipator and the viscoelastic damper are simply connected in parallel, and only have relative shear deformation in one-dimensional direction, and the other two directions of the space are locked, and deformation and energy dissipation cannot be performed.

[0006] In summary, the existing dampers cannot simultaneously satisfy the hierarchical energy dissipation characteristics of the combination of viscoelasticity and mild steel in the three coordinate directions of space.

Images