Beam and pillar node dry connection fan-shaped viscoelastic damper

Abstract

The invention discloses a beam and pillar node dry connection fan-shaped viscoelastic damper. A complex energy dissipation support body is mainly composed of a plurality of elastic units, a plurality of rigid units, rigid plates, a positioning limiting device and a stretching device which are stacked alternately. Each rigid unit is composed of the two fan-shaped rigid plates which are fixedly connected with a beam connection plate and a pillar connection plate correspondingly; each elastic unit is composed of two fan-shaped elastic plates; fan-shaped buffering areas are arranged between the left edge and the right edge of each rigid plate and the beam connection plate and the pillar connection plate; strip-shaped buffering areas are arranged in the center of each fan-shaped rigid unit and each fan-shaped elastic unit, and a notch is formed in each of the two ends of each strip-shaped buffering area; two through holes are formed in each fan-shaped rigid plate; the stretching device is connected with the through holes; a pair of long holes are formed in the rigid unit on the outer side, positioning concave platforms are formed in one sides of the oblong holes; the positioning limiting device is installed in cooperation with the outer side rigid unit for limiting and positioning; and the damper can deform tangentially and radially. The damper is good in damping performance and remarkable in energy dissipation effect.

Description

technical field [0001] The invention belongs to the field of engineering structures, and relates to building components for beam-column joint connection, position limitation and shock absorption, in particular to a sector-shaped viscoelastic damper for beam-column joint dry connection. Background technique [0002] Under the action of earthquakes, the frame structure must meet the "strong earthquake resistance" and the frame structure must provide sufficient deformation capacity under the action of wind load. The frame must have good energy dissipation capacity and deformation capacity. The traditional frame structure relies on the consumption of the structure itself. Energy and provide deformation, limited ability. A reasonable and effective anti-seismic approach is to install anti-seismic devices on the structure, and the anti-seismic devices and the structure jointly bear the seismic action, that is, jointly store and dissipate seismic energy, so as to reduce and adjust t...

AI Technical Summary

Problems solved by technology

[0003] The existing viscoelastic dampers are generally plate or tube or lead viscoelastic dampers, and the existing plate or tube dampers are arranged under the frame beam or on the diagonal of frame beams and columns, and the dampers are connected by rigid supports And building structures, the support is a tensile and compressive member with a large cross-section. It is easy to cause cracks in the wall if it is arranged inside the wall. The performance of the viscoelastic damper fluctuates over a wide range

[0004] The existing lead viscoelastic sector dampers are arranged at the corners of the beam-column joints of the frame, which rely on the deformation of the beam-column corners to dissipate energy, while the relative deformation of the beam-column is relatively small, and the displacement angle limit of the relative deformation of the beam-column under rare earthquakes is 1 / 50, in order to increase the energy dissipation capacity, the lead core is added on the basis of the viscoelastic damper to increase the damping effect. If the viscoelastic damper is used, the energy consumption is very limited

In addition, if the existing lead viscoelastic sector damper is used to assemble the frame structure, it does not have the positioning function, and it will be deformed during the installation stage, thereby reducing the energy dissipation capacity

Furthermore, the lead viscoelastic sector damper does not have the ability to bear the shear force of the beam and the possible tensile force between the beam and the column;

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